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Word Frequency — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: text (string). Tokenize maximal ASCII [a-z0-9]+ runs after lowercasing. Return [{word,count}], sorted by decreasing count then ascending word. 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\"},\"op\":\"solve\"},{\"input\":{\"text\":\"abcd\"},\"op\":\"solve\"},{\"input\":{\"text\":\"1111000\"},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[\"a\",3],[\"b\",2],[\"c\",1],[\"a\",2]]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"text\":\"aaabbcaa\"},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[\"a\",3],[\"b\",2],[\"c\",1],[\"a\",2]]}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"text\":\"aaabbcaa\"},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/2302724\",\"revision\":1}},{\"ok\":true,\"result\":[[\"a\",3],[\"b\",2],[\"c\",1],[\"a\",2]]},{\"ok\":true,\"result\":{\"key\":\"doc/2302724\",\"revision\":1,\"value\":{\"text\":\"aaabbcaa\"}}},{\"ok\":true,\"result\":{\"key\":\"doc/2302724\",\"revision\":2}},{\"ok\":true,\"result\":[[\"1\",4],[\"0\",3]]},{\"ok\":true,\"result\":{\"key\":\"doc/23765538\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/2302724\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/23765538\",\"revision\":3,\"value\":{\"text\":\"aaabbcaa\"}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/2302724\",\"op\":\"get\"},{\"key\":\"doc/2302724\",\"op\":\"put\",\"value\":{\"text\":\"aaabbcaa\"}},{\"key\":\"doc/2302724\",\"op\":\"evaluate\"},{\"key\":\"doc/2302724\",\"op\":\"get\"},{\"key\":\"doc/2302724\",\"op\":\"put\",\"value\":{\"text\":\"1111000\"}},{\"key\":\"doc/2302724\",\"op\":\"evaluate\"},{\"key\":\"doc/23765538\",\"op\":\"put\",\"value\":{\"text\":\"aaabbcaa\"}},{\"key\":\"doc/2302724\",\"op\":\"delete\"},{\"key\":\"doc/2302724\",\"op\":\"get\"},{\"key\":\"doc/2302724\",\"op\":\"delete\"},{\"key\":\"doc/23765538\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/96000564\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/23765538\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/2302724\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/2302724\",\"doc/23765538\",\"other/96000564\"]},{\"ok\":true,\"result\":[\"doc/2302724\",\"doc/23765538\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/96000564\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/23765538\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/96000564\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/96000564\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/23765538\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/2302724\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/96000564\",\"op\":\"get\"},{\"key\":\"other/96000564\",\"op\":\"evaluate\"},{\"key\":\"doc/2302724\",\"op\":\"evaluate\"},{\"key\":\"doc/23765538\",\"op\":\"get\"},{\"key\":\"other/96000564\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/2302724\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"text","entrypoint":"main.py","family":"run_length","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Run Length — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: text (string). Return [character,count] pairs for consecutive identical Unicode code points; retain order and include whitespace. Empty text produces [].\nRequired input fields: text.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"aaabbcaa\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n \"a\",\n 3\n ],\n [\n \"b\",\n 2\n ],\n [\n \"c\",\n 1\n ],\n [\n \"a\",\n 2\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"text\":\"aaabbcaa\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[\"a\",3],[\"b\",2],[\"c\",1],[\"a\",2]]}},{\"request\":{\"input\":{\"text\":\"\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-003-run-length","timeout_seconds":10,"title":"Run Length — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"balanced\":false,\"position\":1}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":3}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":3}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":8}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":2}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":12}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":1}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":0}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":7}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":0}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":0}},{\"ok\":true,\"result\":{\"balanced\":true,\"position\":null}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":1}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":9}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":2}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":0}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":2}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":6}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":0}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":6}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":4}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":7}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":6}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":1}}],\"requests\":[{\"input\":{\"text\":\"a]{a)é)}[[}{\"},\"op\":\"solve\"},{\"input\":{\"text\":\"[ab} [ac]} ([b}{{é}[cb(] aa[](}}c}c[[{) [[cca{c[[ é(a{c}}\"},\"op\":\"solve\"},{\"input\":{\"text\":\"[[c)éc ac(éb(a(aébéc)[é)b] é [é ) } {cc]]}\"},\"op\":\"solve\"},{\"input\":{\"text\":\" [ccéb( ] a]bcc]é ])]b{cé] ]((b(a{(} [éc })a)\"},\"op\":\"solve\"},{\"input\":{\"text\":\"é{){) {b ]bé b{éb ](é[a)c[}é a[é\"},\"op\":\"solve\"},{\"input\":{\"text\":\"([ {}{}()c{b)é)éé[ a} éc) [c{)(}(é[([]})é[ ]}(\"},\"op\":\"solve\"},{\"input\":{\"text\":\"é}cb\"},\"op\":\"solve\"},{\"input\":{\"text\":\")\"},\"op\":\"solve\"},{\"input\":{\"text\":\"((ccé([(\"},\"op\":\"solve\"},{\"input\":{\"text\":\")aa ab c((}a}é{{}b(éé(ab{ {)é [ (]{]]))[)é(]}}bc{{ac\"},\"op\":\"solve\"},{\"input\":{\"text\":\"]) }c\"},\"op\":\"solve\"},{\"input\":{\"text\":\"\"},\"op\":\"solve\"},{\"input\":{\"text\":\"c]}é é{é(a}aé\"},\"op\":\"solve\"},{\"input\":{\"text\":\"[(a{c}éa }[[}{c]b[)]})b} a \"},\"op\":\"solve\"},{\"input\":{\"text\":\"[[}){()é)] }[}éa((]a}b( ()aé]] )]))bcb cé[}}\"},\"op\":\"solve\"},{\"input\":{\"text\":\")}} }[é\"},\"op\":\"solve\"},{\"input\":{\"text\":\"ca)]acc[é}c)b]]][()}cé{c) []}]\"},\"op\":\"solve\"},{\"input\":{\"text\":\"é(acé[) béa])}a(é(c a{[ ){ [])(){ }]a[a b(é])}[)c}(c\"},\"op\":\"solve\"},{\"input\":{\"text\":\")b]b(}()] [] }b\"},\"op\":\"solve\"},{\"input\":{\"text\":\"(ca)c(]a}c{(](c}\"},\"op\":\"solve\"},{\"input\":{\"text\":\"{bab{c\"},\"op\":\"solve\"},{\"input\":{\"text\":\"b a(é{b)é[ }[b){]é))é[{c(}a\"},\"op\":\"solve\"},{\"input\":{\"text\":\"( c{ (]cé}éa éé)é]c({bé{(b(]\"},\"op\":\"solve\"},{\"input\":{\"text\":\" )a}}{][( ]{[})a{[)]}((( { [b{{c({b[]]b]}{\"},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"balanced\":false,\"position\":3}},{\"ok\":true,\"result\":{\"balanced\":true,\"position\":null}},{\"ok\":true,\"result\":{\"balanced\":true,\"position\":null}},{\"ok\":true,\"result\":{\"balanced\":true,\"position\":null}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":1}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":1}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":2}}],\"requests\":[{\"input\":{\"text\":\"a([)]\"},\"op\":\"solve\"},{\"input\":{\"text\":\"\"},\"op\":\"solve\"},{\"input\":{\"text\":\"abc\"},\"op\":\"solve\"},{\"input\":{\"text\":\"([]{})\"},\"op\":\"solve\"},{\"input\":{\"text\":\"((\"},\"op\":\"solve\"},{\"input\":{\"text\":\"é]\"},\"op\":\"solve\"},{\"input\":{\"text\":\"[(]\"},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":3}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"text\":\"a([)]\"},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":3}}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"text\":\"a([)]\"},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/27681263\",\"revision\":1}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/27681263\",\"revision\":1,\"value\":{\"text\":\"a([)]\"}}},{\"ok\":true,\"result\":{\"key\":\"doc/27681263\",\"revision\":2}},{\"ok\":true,\"result\":{\"balanced\":false,\"position\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/69303228\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/27681263\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/69303228\",\"revision\":3,\"value\":{\"text\":\"a([)]\"}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/27681263\",\"op\":\"get\"},{\"key\":\"doc/27681263\",\"op\":\"put\",\"value\":{\"text\":\"a([)]\"}},{\"key\":\"doc/27681263\",\"op\":\"evaluate\"},{\"key\":\"doc/27681263\",\"op\":\"get\"},{\"key\":\"doc/27681263\",\"op\":\"put\",\"value\":{\"text\":\"[(]\"}},{\"key\":\"doc/27681263\",\"op\":\"evaluate\"},{\"key\":\"doc/69303228\",\"op\":\"put\",\"value\":{\"text\":\"a([)]\"}},{\"key\":\"doc/27681263\",\"op\":\"delete\"},{\"key\":\"doc/27681263\",\"op\":\"get\"},{\"key\":\"doc/27681263\",\"op\":\"delete\"},{\"key\":\"doc/69303228\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/37927805\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/69303228\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/27681263\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/27681263\",\"doc/69303228\",\"other/37927805\"]},{\"ok\":true,\"result\":[\"doc/27681263\",\"doc/69303228\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/37927805\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/69303228\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/37927805\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/37927805\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/69303228\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/27681263\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/37927805\",\"op\":\"get\"},{\"key\":\"other/37927805\",\"op\":\"evaluate\"},{\"key\":\"doc/27681263\",\"op\":\"evaluate\"},{\"key\":\"doc/69303228\",\"op\":\"get\"},{\"key\":\"other/37927805\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/27681263\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"text","entrypoint":"main.py","family":"bracket_audit","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Bracket Audit — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: text. Audit (), [], {} ignoring all other code points. Return {balanced,position}. On first unmatched/mismatched closing bracket, position is its zero-based code-point index. If openings remain at EOF, position is the most recent unmatched opening. Balanced input has position:null.\nRequired input fields: text.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"a([)]\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"balanced\": false,\n \"position\": 3\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"balanced\": true,\n \"position\": null\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"text\":\"a([)]\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"balanced\":false,\"position\":3}}},{\"request\":{\"input\":{\"text\":\"\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"balanced\":true,\"position\":null}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-004-bracket-audit","timeout_seconds":10,"title":"Bracket Audit — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[\"Aa\",\"_a-9bA-\",\"BBé\",\"0_ab\"]},{\"ok\":true,\"result\":[\"9 0a\",\"-9é-0Aéé9aéb\",\"_é B0\",\"b0aéaB0AB\",\"00-\",\"b-0_A9ABA99\"]},{\"ok\":true,\"result\":[\"AbbABébb99\"]},{\"ok\":true,\"result\":[\"--A _abé-b\"]},{\"ok\":true,\"result\":[\"0aAB0B_a9 éa\",\"Ba0_ A 9b9--\",\"9Bé0bAbé_B\"]},{\"ok\":true,\"result\":[\"9éaé\",\"é bb9\"]},{\"ok\":true,\"result\":[\"9 _Bb\"]},{\"ok\":true,\"result\":[\"_aAA\",\"é\",\"9__a_é_-é\",\"0bA_\",\"-b-\",\"-A\",\"_B_b9\",\"éa\",\"ABé\",\"baééé-éé\",\"9Ab0éé\"]},{\"ok\":true,\"result\":[\"AéééB0 0A_- 0 -_--\",\"A\"]},{\"ok\":true,\"result\":[\"A_-\",\"-__a0b_0éb\",\"-9 a _Bé\",\"_abAa--B9a9BAa\"]},{\"ok\":true,\"result\":[\"A -\"]},{\"ok\":true,\"result\":[\"99a 00 é_a _éA\",\"a9BA\",\"_Aéé_b0-0_-é0-0Aé\"]},{\"ok\":true,\"result\":[\"_9b9éAbbA9-_0AAAb00A\",\"-a0-é0 A-0B-ABab\",\"é-0_9a_9_B\"]},{\"ok\":true,\"result\":[\"AA\",\"A-_0\",\"_éé9_bBB09aéABAéé_\",\"--\"]},{\"ok\":true,\"result\":[\"-bB-_AA\",\"a Aa\",\"AA\"]},{\"ok\":true,\"result\":[\"bA0aa A _ba\",\"9A0B0\"]},{\"ok\":true,\"result\":[\"a_0_aBb\",\"-0BA00aa-A\"]},{\"ok\":true,\"result\":[\"-b-A\",\"é\",\"éaé_0\",\"-ab--9\",\"90éA0A0-00a0A_\"]},{\"ok\":true,\"result\":[\"-9 b A00 baé9\",\"AA-90é-0ab 0\",\"a-Aa 9aéAAB0\",\"ab B é9A_AAb\",\"__a-\"]},{\"ok\":true,\"result\":[\"9_A_bB_b9A\",\"_Bé _0AbAB _\",\"-ba9-B00\",\"aA_é__ A-_b\",\"0b AB0a9ab9\"]},{\"ok\":true,\"result\":[\"0é baéb_ _\",\"BabbéB_é\",\"9Aab0\",\"aAéa9B9a-éé\"]},{\"ok\":true,\"result\":[\"aB_é0b\",\"A _\",\"B0a 0\",\"b\"]},{\"ok\":true,\"result\":[\"b B0bb\",\"-a\",\"0900_\",\"00 _\",\"99A-\",\"-_aB\",\"Babéba\"]},{\"ok\":true,\"result\":[\"A--bAa9AB\",\"bB09-BA-_0_9é_\"]}],\"requests\":[{\"input\":{\"text\":\"Aa\\n_a-9bA-\\nBBé\\n\\n 0_ab\",\"width\":6},\"op\":\"solve\"},{\"input\":{\"text\":\"9\\n0a -9é-0Aéé9aéb\\n_é\\nB0\\nb0aéaB0AB 00-\\nb-0_A9ABA99\",\"width\":6},\"op\":\"solve\"},{\"input\":{\"text\":\"AbbABébb99 \",\"width\":8},\"op\":\"solve\"},{\"input\":{\"text\":\"--A\\n\\n_abé-b\",\"width\":15},\"op\":\"solve\"},{\"input\":{\"text\":\"0aAB0B_a9\\néa Ba0_ \\nA\\n9b9-- 9Bé0bAbé_B\",\"width\":15},\"op\":\"solve\"},{\"input\":{\"text\":\"9éaé\\n\\n é bb9\",\"width\":5},\"op\":\"solve\"},{\"input\":{\"text\":\"9 _Bb \",\"width\":18},\"op\":\"solve\"},{\"input\":{\"text\":\"_aAA\\né 9__a_é_-é 0bA_\\n-b- -A _B_b9 éa \\nABé\\nbaééé-éé\\n9Ab0éé\",\"width\":2},\"op\":\"solve\"},{\"input\":{\"text\":\"AéééB0 0A_- 0 -_-- A\",\"width\":18},\"op\":\"solve\"},{\"input\":{\"text\":\"A_- -__a0b_0éb -9 a _Bé\\n_abAa--B9a9BAa\",\"width\":9},\"op\":\"solve\"},{\"input\":{\"text\":\"A \\n-\\n\",\"width\":15},\"op\":\"solve\"},{\"input\":{\"text\":\"99a\\n00 é_a _éA\\na9BA\\n_Aéé_b0-0_-é0-0Aé\",\"width\":18},\"op\":\"solve\"},{\"input\":{\"text\":\"_9b9éAbbA9-_0AAAb00A -a0-é0 A-0B-ABab\\né-0_9a_9_B\",\"width\":16},\"op\":\"solve\"},{\"input\":{\"text\":\"\\nAA A-_0\\n_éé9_bBB09aéABAéé_\\n--\",\"width\":1},\"op\":\"solve\"},{\"input\":{\"text\":\"-bB-_AA a Aa \\nAA\",\"width\":4},\"op\":\"solve\"},{\"input\":{\"text\":\"bA0aa\\nA\\n_ba 9A0B0\",\"width\":14},\"op\":\"solve\"},{\"input\":{\"text\":\"a_0_aBb -0BA00aa-A\",\"width\":15},\"op\":\"solve\"},{\"input\":{\"text\":\"-b-A\\n é\\n\\n éaé_0 -ab--9\\n90éA0A0-00a0A_\",\"width\":5},\"op\":\"solve\"},{\"input\":{\"text\":\"-9 b A00\\nbaé9 AA-90é-0ab 0\\na-Aa 9aéAAB0 ab B é9A_AAb __a-\",\"width\":14},\"op\":\"solve\"},{\"input\":{\"text\":\"9_A_bB_b9A _Bé _0AbAB \\n_ -ba9-B00 aA_é__\\nA-_b\\n0b AB0a9ab9\",\"width\":13},\"op\":\"solve\"},{\"input\":{\"text\":\" 0é baéb_\\n_\\n\\nBabbéB_é\\n9Aab0\\naAéa9B9a-éé\",\"width\":13},\"op\":\"solve\"},{\"input\":{\"text\":\"aB_é0b\\nA _ B0a 0\\nb\",\"width\":6},\"op\":\"solve\"},{\"input\":{\"text\":\"b B0bb -a 0900_ 00 _\\n99A-\\n-_aB Babéba\",\"width\":7},\"op\":\"solve\"},{\"input\":{\"text\":\"A--bAa9AB\\nbB09-BA-_0_9é_\",\"width\":6},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[\"one two\",\"three\",\"four\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[\"abcdef\",\"a\"]},{\"ok\":true,\"result\":[\"a b\",\"c\"]},{\"ok\":true,\"result\":[\"éé\",\"a\"]},{\"ok\":true,\"result\":[\"a b c\"]}],\"requests\":[{\"input\":{\"text\":\"one two three four\",\"width\":7},\"op\":\"solve\"},{\"input\":{\"text\":\"\",\"width\":1},\"op\":\"solve\"},{\"input\":{\"text\":\"abcdef a\",\"width\":2},\"op\":\"solve\"},{\"input\":{\"text\":\" a\\t b\\n c \",\"width\":3},\"op\":\"solve\"},{\"input\":{\"text\":\"éé a\",\"width\":2},\"op\":\"solve\"},{\"input\":{\"text\":\"a b c\",\"width\":20},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"one two\",\"three\",\"four\"]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"text\":\"one two three four\",\"width\":7},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"one two\",\"three\",\"four\"]}],\"requests\":[{\"input\":{\"width\":7},\"op\":\"solve\"},{\"input\":{\"text\":\"one two three four\"},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"text\":\"one two three four\",\"width\":7},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/68363825\",\"revision\":1}},{\"ok\":true,\"result\":[\"one two\",\"three\",\"four\"]},{\"ok\":true,\"result\":{\"key\":\"doc/68363825\",\"revision\":1,\"value\":{\"text\":\"one two three four\",\"width\":7}}},{\"ok\":true,\"result\":{\"key\":\"doc/68363825\",\"revision\":2}},{\"ok\":true,\"result\":[\"a b c\"]},{\"ok\":true,\"result\":{\"key\":\"doc/8442062\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/68363825\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/8442062\",\"revision\":3,\"value\":{\"text\":\"one two three four\",\"width\":7}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/68363825\",\"op\":\"get\"},{\"key\":\"doc/68363825\",\"op\":\"put\",\"value\":{\"text\":\"one two three four\",\"width\":7}},{\"key\":\"doc/68363825\",\"op\":\"evaluate\"},{\"key\":\"doc/68363825\",\"op\":\"get\"},{\"key\":\"doc/68363825\",\"op\":\"put\",\"value\":{\"text\":\"a b c\",\"width\":20}},{\"key\":\"doc/68363825\",\"op\":\"evaluate\"},{\"key\":\"doc/8442062\",\"op\":\"put\",\"value\":{\"text\":\"one two three four\",\"width\":7}},{\"key\":\"doc/68363825\",\"op\":\"delete\"},{\"key\":\"doc/68363825\",\"op\":\"get\"},{\"key\":\"doc/68363825\",\"op\":\"delete\"},{\"key\":\"doc/8442062\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/14432378\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/8442062\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/68363825\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/68363825\",\"doc/8442062\",\"other/14432378\"]},{\"ok\":true,\"result\":[\"doc/68363825\",\"doc/8442062\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/14432378\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/8442062\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/14432378\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/14432378\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/8442062\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/68363825\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/14432378\",\"op\":\"get\"},{\"key\":\"other/14432378\",\"op\":\"evaluate\"},{\"key\":\"doc/68363825\",\"op\":\"evaluate\"},{\"key\":\"doc/8442062\",\"op\":\"get\"},{\"key\":\"other/14432378\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/68363825\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"text","entrypoint":"main.py","family":"text_wrap","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Text Wrap — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: text and positive integer width. Split on Unicode whitespace. Greedily pack words into lines with single spaces; a next word fits iff length including separating space <= width. Never split a long word. Return lines without empty lines.\nRequired input fields: text, width.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"one two three four\",\n \"width\": 7\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"one two\",\n \"three\",\n \"four\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"\",\n \"width\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"text\":\"one two three four\",\"width\":7},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[\"one two\",\"three\",\"four\"]}},{\"request\":{\"input\":{\"text\":\"\",\"width\":1},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-005-text-wrap","timeout_seconds":10,"title":"Text Wrap — workspace service"} 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Ngram Index — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: tokens (strings), n (positive integer). Return [{tokens,positions}] for each distinct contiguous n-gram, sorted lexicographically by token sequence. Positions are ascending zero-based starting indices. n greater than length produces [].\nRequired input fields: tokens, n.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"tokens\": [\n \"a\",\n \"b\",\n \"a\",\n \"b\"\n ],\n \"n\": 2\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"tokens\": [\n \"a\",\n \"b\"\n ],\n \"positions\": [\n 0,\n 2\n ]\n },\n {\n \"tokens\": [\n \"b\",\n \"a\"\n ],\n \"positions\": [\n 1\n ]\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"tokens\": [],\n \"n\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n 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Glob Filter — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: paths (strings), pattern. Return sorted unique matches using case-sensitive shell glob semantics: * matches any run including /, ? one character, [abc] a class, [!abc] a negated class. Python fnmatch.fnmatchcase semantics apply. No filesystem access.\nRequired input fields: paths, pattern.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"paths\": [\n \"a.py\",\n \"B.py\",\n \"a.txt\",\n \"a.py\",\n \"x/a.py\"\n ],\n \"pattern\": \"*.py\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"B.py\",\n \"a.py\",\n \"x/a.py\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"paths\": [],\n \"pattern\": \"*\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n 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:\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/34513679\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"text","entrypoint":"main.py","family":"edit_distance","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Edit Distance — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: strings a,b of <=200 code points. Return Levenshtein distance with unit insertion, deletion and substitution costs. Compare Unicode code points, case-sensitive.\nRequired input fields: a, b.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": \"kitten\",\n \"b\": \"sitting\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 3\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": \"\",\n \"b\": \"\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 0\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"a\":\"kitten\",\"b\":\"sitting\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":3}},{\"request\":{\"input\":{\"a\":\"\",\"b\":\"\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":0}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-008-edit-distance","timeout_seconds":10,"title":"Edit Distance — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":\"CXCVIII\"},{\"ok\":true,\"result\":\"MMMCCCXCVII\"},{\"ok\":true,\"result\":\"MDCCLXI\"},{\"ok\":true,\"result\":\"MDLII\"},{\"ok\":true,\"result\":\"MCXIX\"},{\"ok\":true,\"result\":\"MMCDXXIV\"},{\"ok\":true,\"result\":\"MMCMLXXIX\"},{\"ok\":true,\"result\":\"MCCV\"},{\"ok\":true,\"result\":\"MMMCMLXVII\"},{\"ok\":true,\"result\":\"MMXVIII\"},{\"ok\":true,\"result\":\"MMMCDXXII\"},{\"ok\":true,\"result\":\"MCCLXXXVII\"},{\"ok\":true,\"result\":\"MDCLVII\"},{\"ok\":true,\"result\":\"MMCCCXIII\"},{\"ok\":true,\"result\":\"MCIV\"},{\"ok\":true,\"result\":\"CMLVII\"},{\"ok\":true,\"result\":\"MMMCMXXXI\"},{\"ok\":true,\"result\":\"MMMCCXCI\"},{\"ok\":true,\"result\":\"MMMDCXII\"},{\"ok\":true,\"result\":\"MMMCDXXII\"},{\"ok\":true,\"result\":\"MDCCCLI\"},{\"ok\":true,\"result\":\"MDCXCIX\"},{\"ok\":true,\"result\":\"MVII\"},{\"ok\":true,\"result\":\"MCMXXXVIII\"}],\"requests\":[{\"input\":{\"number\":198},\"op\":\"solve\"},{\"input\":{\"number\":3397},\"op\":\"solve\"},{\"input\":{\"number\":1761},\"op\":\"solve\"},{\"input\":{\"number\":1552},\"op\":\"solve\"},{\"input\":{\"number\":1119},\"op\":\"solve\"},{\"input\":{\"number\":2424},\"op\":\"solve\"},{\"input\":{\"number\":2979},\"op\":\"solve\"},{\"input\":{\"number\":1205},\"op\":\"solve\"},{\"input\":{\"number\":3967},\"op\":\"solve\"},{\"input\":{\"number\":2018},\"op\":\"solve\"},{\"input\":{\"number\":3422},\"op\":\"solve\"},{\"input\":{\"number\":1287},\"op\":\"solve\"},{\"input\":{\"number\":1657},\"op\":\"solve\"},{\"input\":{\"number\":2313},\"op\":\"solve\"},{\"input\":{\"number\":1104},\"op\":\"solve\"},{\"input\":{\"number\":957},\"op\":\"solve\"},{\"input\":{\"number\":3931},\"op\":\"solve\"},{\"input\":{\"number\":3291},\"op\":\"solve\"},{\"input\":{\"number\":3612},\"op\":\"solve\"},{\"input\":{\"number\":3422},\"op\":\"solve\"},{\"input\":{\"number\":1851},\"op\":\"solve\"},{\"input\":{\"number\":1699},\"op\":\"solve\"},{\"input\":{\"number\":1007},\"op\":\"solve\"},{\"input\":{\"number\":1938},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":\"MCMXCIV\"},{\"ok\":true,\"result\":\"I\"},{\"ok\":true,\"result\":\"IV\"},{\"ok\":true,\"result\":\"IX\"},{\"ok\":true,\"result\":\"MMMCMXCIX\"},{\"ok\":true,\"result\":\"CMXLIV\"},{\"ok\":true,\"result\":\"LVIII\"}],\"requests\":[{\"input\":{\"number\":1994},\"op\":\"solve\"},{\"input\":{\"number\":1},\"op\":\"solve\"},{\"input\":{\"number\":4},\"op\":\"solve\"},{\"input\":{\"number\":9},\"op\":\"solve\"},{\"input\":{\"number\":3999},\"op\":\"solve\"},{\"input\":{\"number\":944},\"op\":\"solve\"},{\"input\":{\"number\":58},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":\"MCMXCIV\"}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"number\":1994},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":\"MCMXCIV\"}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"number\":1994},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/37278166\",\"revision\":1}},{\"ok\":true,\"result\":\"MCMXCIV\"},{\"ok\":true,\"result\":{\"key\":\"doc/37278166\",\"revision\":1,\"value\":{\"number\":1994}}},{\"ok\":true,\"result\":{\"key\":\"doc/37278166\",\"revision\":2}},{\"ok\":true,\"result\":\"LVIII\"},{\"ok\":true,\"result\":{\"key\":\"doc/72471618\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/37278166\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/72471618\",\"revision\":3,\"value\":{\"number\":1994}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/37278166\",\"op\":\"get\"},{\"key\":\"doc/37278166\",\"op\":\"put\",\"value\":{\"number\":1994}},{\"key\":\"doc/37278166\",\"op\":\"evaluate\"},{\"key\":\"doc/37278166\",\"op\":\"get\"},{\"key\":\"doc/37278166\",\"op\":\"put\",\"value\":{\"number\":58}},{\"key\":\"doc/37278166\",\"op\":\"evaluate\"},{\"key\":\"doc/72471618\",\"op\":\"put\",\"value\":{\"number\":1994}},{\"key\":\"doc/37278166\",\"op\":\"delete\"},{\"key\":\"doc/37278166\",\"op\":\"get\"},{\"key\":\"doc/37278166\",\"op\":\"delete\"},{\"key\":\"doc/72471618\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/92518562\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/72471618\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/37278166\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/37278166\",\"doc/72471618\",\"other/92518562\"]},{\"ok\":true,\"result\":[\"doc/37278166\",\"doc/72471618\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/92518562\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/72471618\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/92518562\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/92518562\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/72471618\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/37278166\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/92518562\",\"op\":\"get\"},{\"key\":\"other/92518562\",\"op\":\"evaluate\"},{\"key\":\"doc/37278166\",\"op\":\"evaluate\"},{\"key\":\"doc/72471618\",\"op\":\"get\"},{\"key\":\"other/92518562\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/37278166\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"text","entrypoint":"main.py","family":"roman_codec","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Roman Codec — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: integer number in 1..3999. Return canonical uppercase Roman numeral using subtractive pairs IV,IX,XL,XC,CD,CM.\nRequired input fields: number.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"number\": 1994\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": \"MCMXCIV\"\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"number\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": \"I\"\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"number\":1994},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":\"MCMXCIV\"}},{\"request\":{\"input\":{\"number\":1},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":\"I\"}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-009-roman-codec","timeout_seconds":10,"title":"Roman Codec — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":\"c0C\\n\\n_99\\nD_ D\\nd\\n 9CD\"},{\"ok\":true,\"result\":\"0yxy éé y_Xxy- 9\\nXYX 009 9é_9é_ --\\n--0XX_0xy9Xéé\"},{\"ok\":true,\"result\":\"II-_j0iéI-i9é éji0iJ jjIé 9 ii\\nIijII9-Iii 9J\"},{\"ok\":true,\"result\":\"\"},{\"ok\":true,\"result\":\"0k\\n\"},{\"ok\":true,\"result\":\"_0Zz\\nY9y 0yé----Y0_é\\nzyy0Z\\n _éé\"},{\"ok\":true,\"result\":\"p9 -_9p_p\\n\\n Po0Oé-p9 P_p9é\\n\"},{\"ok\":true,\"result\":\"y\\n-éyY_yX-XXXéX__9 \\nY XX0y_YY\\n9y-xYxé xX99_éY0YX9_Y\"},{\"ok\":true,\"result\":\"zA0_\"},{\"ok\":true,\"result\":\" -9--_VwW_W W090é_Wvéé00-\\n_V9V_9 -9__ \"},{\"ok\":true,\"result\":\"S_-\\né_ts_S_9S-t 9t_\\ntS-_s \"},{\"ok\":true,\"result\":\" eé999_E0 0e00EDDé_e_-e\\n9--0d9-EEed_eéé-\"},{\"ok\":true,\"result\":\"_MNMné---NN\\n0é_9Mn _0-0M9\\n-nMn\"},{\"ok\":true,\"result\":\"MéMN 0ééé-M99mn\\n9 0_é00mém_90-\"},{\"ok\":true,\"result\":\"b_0- 9-\"},{\"ok\":true,\"result\":\"MN-M00\\n--M9_m__9M\"},{\"ok\":true,\"result\":\"-o_0o N _N onn_oOn\\n9é0N_\\n_ -éo _0On é_o_\\né\\n9o--o____-éO0\"},{\"ok\":true,\"result\":\"\\n -__Mm9-éMé\\n_m\\n\\n0N\\nnM_MmM_\\nm\\nnéN99_\\n9Nmn m_-nm-_ MnmnN mmé\"},{\"ok\":true,\"result\":\"_z\\nz YZz9 é\"},{\"ok\":true,\"result\":\"é_i90h HhéI9HI9\\né99HiI-HHiéi0I\\ni 0hhH0h9\"},{\"ok\":true,\"result\":\"Pq\"},{\"ok\":true,\"result\":\"9-W_\\n9VWW0_W\\nWvvv\\n ww_Ww-wwWvvVVé0 9v\\n\\n9Vé0_\\né_\"},{\"ok\":true,\"result\":\"ée0E9e_ 9eé\\neD000- D9_0_de\"},{\"ok\":true,\"result\":\"c\\nD_\\né d\\n dC0d0\\né _\"}],\"requests\":[{\"input\":{\"shift\":470,\"text\":\"a0A\\n\\n_99\\nB_ B\\nb\\n 9AB\"},\"op\":\"solve\"},{\"input\":{\"shift\":-185,\"text\":\"0bab éé b_Aab- 9\\nABA 009 9é_9é_ --\\n--0AA_0ab9Aéé\"},\"op\":\"solve\"},{\"input\":{\"shift\":-460,\"text\":\"AA-_b0aéA-a9é éba0aB bbAé 9 aa\\nAabAA9-Aaa 9B\"},\"op\":\"solve\"},{\"input\":{\"shift\":-477,\"text\":\"\"},\"op\":\"solve\"},{\"input\":{\"shift\":-640,\"text\":\"0a\\n\"},\"op\":\"solve\"},{\"input\":{\"shift\":-782,\"text\":\"_0Bb\\nA9a 0aé----A0_é\\nbaa0B\\n _éé\"},\"op\":\"solve\"},{\"input\":{\"shift\":-298,\"text\":\"b9 -_9b_b\\n\\n Ba0Aé-b9 B_b9é\\n\"},\"op\":\"solve\"},{\"input\":{\"shift\":-107,\"text\":\"b\\n-ébB_bA-AAAéA__9 \\nB AA0b_BB\\n9b-aBaé aA99_éB0BA9_B\"},\"op\":\"solve\"},{\"input\":{\"shift\":545,\"text\":\"aB0_\"},\"op\":\"solve\"},{\"input\":{\"shift\":-759,\"text\":\" -9--_AbB_B B090é_Baéé00-\\n_A9A_9 -9__ \"},\"op\":\"solve\"},{\"input\":{\"shift\":-502,\"text\":\"A_-\\né_ba_A_9A-b 9b_\\nbA-_a \"},\"op\":\"solve\"},{\"input\":{\"shift\":-907,\"text\":\" bé999_B0 0b00BAAé_b_-b\\n9--0a9-BBba_béé-\"},\"op\":\"solve\"},{\"input\":{\"shift\":90,\"text\":\"_ABAbé---BB\\n0é_9Ab _0-0A9\\n-bAb\"},\"op\":\"solve\"},{\"input\":{\"shift\":-872,\"text\":\"AéAB 0ééé-A99ab\\n9 0_é00aéa_90-\"},\"op\":\"solve\"},{\"input\":{\"shift\":365,\"text\":\"a_0- 9-\"},\"op\":\"solve\"},{\"input\":{\"shift\":194,\"text\":\"AB-A00\\n--A9_a__9A\"},\"op\":\"solve\"},{\"input\":{\"shift\":-299,\"text\":\"-b_0b A _A baa_bBa\\n9é0A_\\n_ -éb _0Ba é_b_\\né\\n9b--b____-éB0\"},\"op\":\"solve\"},{\"input\":{\"shift\":-664,\"text\":\"\\n -__Aa9-éAé\\n_a\\n\\n0B\\nbA_AaA_\\na\\nbéB99_\\n9Bab a_-ba-_ AbabB aaé\"},\"op\":\"solve\"},{\"input\":{\"shift\":648,\"text\":\"_b\\nb ABb9 é\"},\"op\":\"solve\"},{\"input\":{\"shift\":345,\"text\":\"é_b90a AaéB9AB9\\né99AbB-AAbéb0B\\nb 0aaA0a9\"},\"op\":\"solve\"},{\"input\":{\"shift\":327,\"text\":\"Ab\"},\"op\":\"solve\"},{\"input\":{\"shift\":47,\"text\":\"9-B_\\n9ABB0_B\\nBaaa\\n bb_Bb-bbBaaAAé0 9a\\n\\n9Aé0_\\né_\"},\"op\":\"solve\"},{\"input\":{\"shift\":-699,\"text\":\"éb0B9b_ 9bé\\nbA000- A9_0_ab\"},\"op\":\"solve\"},{\"input\":{\"shift\":158,\"text\":\"a\\nB_\\né b\\n bA0b0\\né _\"},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":\"Ba-a! 9\"},{\"ok\":true,\"result\":\"\"},{\"ok\":true,\"result\":\"Zab\"},{\"ok\":true,\"result\":\"é中\"},{\"ok\":true,\"result\":\"XYZ abc\"},{\"ok\":true,\"result\":\"zY\"}],\"requests\":[{\"input\":{\"shift\":1,\"text\":\"Az-z! 9\"},\"op\":\"solve\"},{\"input\":{\"shift\":0,\"text\":\"\"},\"op\":\"solve\"},{\"input\":{\"shift\":-1,\"text\":\"Abc\"},\"op\":\"solve\"},{\"input\":{\"shift\":13,\"text\":\"é中\"},\"op\":\"solve\"},{\"input\":{\"shift\":52,\"text\":\"XYZ abc\"},\"op\":\"solve\"},{\"input\":{\"shift\":-53,\"text\":\"aZ\"},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":\"Ba-a! 9\"}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"shift\":1,\"text\":\"Az-z! 9\"},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":\"Ba-a! 9\"}],\"requests\":[{\"input\":{\"shift\":1},\"op\":\"solve\"},{\"input\":{\"text\":\"Az-z! 9\"},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"shift\":1,\"text\":\"Az-z! 9\"},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/44191372\",\"revision\":1}},{\"ok\":true,\"result\":\"Ba-a! 9\"},{\"ok\":true,\"result\":{\"key\":\"doc/44191372\",\"revision\":1,\"value\":{\"shift\":1,\"text\":\"Az-z! 9\"}}},{\"ok\":true,\"result\":{\"key\":\"doc/44191372\",\"revision\":2}},{\"ok\":true,\"result\":\"zY\"},{\"ok\":true,\"result\":{\"key\":\"doc/99368624\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/44191372\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/99368624\",\"revision\":3,\"value\":{\"shift\":1,\"text\":\"Az-z! 9\"}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/44191372\",\"op\":\"get\"},{\"key\":\"doc/44191372\",\"op\":\"put\",\"value\":{\"shift\":1,\"text\":\"Az-z! 9\"}},{\"key\":\"doc/44191372\",\"op\":\"evaluate\"},{\"key\":\"doc/44191372\",\"op\":\"get\"},{\"key\":\"doc/44191372\",\"op\":\"put\",\"value\":{\"shift\":-53,\"text\":\"aZ\"}},{\"key\":\"doc/44191372\",\"op\":\"evaluate\"},{\"key\":\"doc/99368624\",\"op\":\"put\",\"value\":{\"shift\":1,\"text\":\"Az-z! 9\"}},{\"key\":\"doc/44191372\",\"op\":\"delete\"},{\"key\":\"doc/44191372\",\"op\":\"get\"},{\"key\":\"doc/44191372\",\"op\":\"delete\"},{\"key\":\"doc/99368624\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/33294921\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/99368624\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/44191372\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/44191372\",\"doc/99368624\",\"other/33294921\"]},{\"ok\":true,\"result\":[\"doc/44191372\",\"doc/99368624\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/33294921\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/99368624\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/33294921\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/33294921\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/99368624\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/44191372\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/33294921\",\"op\":\"get\"},{\"key\":\"other/33294921\",\"op\":\"evaluate\"},{\"key\":\"doc/44191372\",\"op\":\"evaluate\"},{\"key\":\"doc/99368624\",\"op\":\"get\"},{\"key\":\"other/33294921\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/44191372\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"text","entrypoint":"main.py","family":"caesar_cipher","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Caesar Cipher — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: text and integer shift. Rotate only ASCII letters by shift modulo 26, preserving case. All other characters unchanged.\nRequired input fields: text, shift.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"Az-z! 9\",\n \"shift\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": \"Ba-a! 9\"\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"text\": \"\",\n \"shift\": 0\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": \"\"\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"shift\":1,\"text\":\"Az-z! 9\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":\"Ba-a! 9\"}},{\"request\":{\"input\":{\"shift\":0,\"text\":\"\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":\"\"}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-010-caesar-cipher","timeout_seconds":10,"title":"Caesar Cipher — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[{\"a\":\"\\na\\n,bbé\\néé,é, ba\\n,\\\"é,b\\n b\\\"\\\"bé\\\"a,\\\",b, ,é éb a\\\" \\n\",\"b\":\"00éa 0é\\nA9é_aB A99_Bbb_B--9 __-Ba9_-aé__BaB9bAAa\\n0BBAbé\"},{\"a\":\",ba\\\"a\\\"a,\",\"b\":\"Béé baa9éB9 -9A--A\"},{\"a\":\"a\\n \",\"b\":\"00Aéé-a-_\\n-A-\"},{\"a\":\" \\n, b ,é,b\\né,\\\"\\n é\\nééa \\n\\n\",\"b\":\"A\\n_0A0_BB 00009 9-_0-aA_ 90_9A0\\n 9-bA BA-a\\néA A-bbBé\"},{\"a\":\"\\\"\\n,\\nb\\n\\né\\\",a aé,é\\n\\\" a,\\n \",\"b\":\"B_éa__bbéb\"},{\"a\":\"éb \\na\\n \\\" \\\"bé,\\\"\\\"\\n a a\\n,\\\"é,\\\"\\\"baaéb\",\"b\":\"-909bé9b-b9bBééA\"},{\"a\":\"éé ,b\\né,a \\nb,\\né,abé\\\" \\\"ba é\\na\\nb a\\\" ,\\\"b éb aéa\\n\\n a ,\\n\\n\\\"\",\"b\":\"b_B- a-\\n-9a- \\na9\\nA09A_aé9 A0aB0_\"}]},{\"ok\":true,\"result\":[{\"a\":\"b\\\"\\n ,b\\\"éabbéa,ab\\nébbéébabb ,,aé\\n\\\"é\\\"é a\\n\\\" , é\\\"é,ba\",\"b\":\"é0ééé9b Bé-abééaaé_-A99-0é\\n0B9BBA0a\\na 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ey\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/18929253\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"csv_records","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Csv Records — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: csv (string). Parse comma-separated CSV with double-quoted fields, doubled quote escaping and quoted newlines (Python csv.reader dialect excel). First row is unique nonempty header names. Subsequent rows have the same width. Return objects in source order. Empty document returns []. Blank data rows and malformed CSV are out of scope.\nRequired input fields: csv.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"csv\": \"name,n\\na,1\\nb,2\\n\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"name\": \"a\",\n \"n\": \"1\"\n },\n {\n \"name\": \"b\",\n \"n\": \"2\"\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"csv\": \"\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"csv\":\"name,n\\na,1\\nb,2\\n\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[{\"n\":\"1\",\"name\":\"a\"},{\"n\":\"2\",\"name\":\"b\"}]}},{\"request\":{\"input\":{\"csv\":\"\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-011-csv-records","timeout_seconds":10,"title":"Csv Records — workspace service"} 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\"b\":2},{\"a\":2,\"b\":2}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":2}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":null,\"b\":null},{\"a\":1,\"b\":\"x\"},{\"b\":\"x\"},{\"a\":null,\"b\":null},{\"a\":2,\"b\":null},{\"a\":2}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"rows\":[],\"select\":[\"b\",\"c\"],\"where\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":2,\"b\":2},{\"a\":\"x\"},{\"a\":2},{\"a\":1,\"b\":null},{\"a\":null,\"b\":1},{\"a\":2,\"b\":2},{\"a\":2,\"b\":2},{\"a\":\"x\",\"b\":2},{\"a\":2,\"b\":1}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"rows\":[],\"select\":[\"b\",\"c\"],\"where\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"rows\":[{},{\"a\":\"x\",\"b\":null},{\"a\":2,\"b\":\"x\"},{\"a\":1,\"b\":null},{\"a\":\"x\",\"b\":null},{\"a\":\"x\"},{\"a\":\"x\",\"b\":null},{\"a\":\"x\"},{\"a\":1},{\"a\":null,\"b\":1},{\"a\":1},{\"a\":null,\"b\":2}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":null,\"b\":1},{\"b\":2},{\"a\":1,\"b\":2},{\"a\":null,\"b\":\"x\"},{\"a\":2,\"b\":2},{\"a\":1,\"b\":null}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"b\":2},{\"a\":1},{\"a\":2,\"b\":1},{\"b\":null},{\"a\":null,\"b\":\"x\"},{\"a\":null}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":2}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":2,\"b\":2},{\"a\":1,\"b\":1},{\"a\":\"x\"},{\"a\":1,\"b\":\"x\"},{\"a\":null,\"b\":2},{\"b\":2},{\"a\":2},{\"a\":1,\"b\":\"x\"},{\"a\":1},{\"a\":null},{\"a\":\"x\",\"b\":2},{\"a\":1,\"b\":\"x\"},{\"a\":2,\"b\":\"x\"}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":2}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":\"x\"},{\"a\":2,\"b\":null},{\"a\":2,\"b\":null}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":\"x\"},{\"a\":1,\"b\":\"x\"},{\"a\":1,\"b\":null},{\"b\":2},{\"a\":\"x\",\"b\":null},{\"a\":2,\"b\":1},{\"b\":null},{\"b\":1},{\"a\":null,\"b\":\"x\"},{\"b\":2},{\"b\":\"x\"},{\"b\":null}],\"select\":[\"b\",\"c\"],\"where\":{\"a\":null}},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[{\"b\":\"x\"},{\"b\":null}]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[{\"a\":null}]},{\"ok\":true,\"result\":[{}]},{\"ok\":true,\"result\":[{\"x\":[1]}]}],\"requests\":[{\"input\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"rows\":[],\"select\":[],\"where\":{}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":null},{}],\"select\":[\"a\"],\"where\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"x\":1}],\"select\":[],\"where\":{}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"x\":[1]},{\"x\":[2]}],\"select\":[\"x\"],\"where\":{\"x\":[1]}},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[{\"b\":\"x\"},{\"b\":null}]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[{\"b\":\"x\"},{\"b\":null}]}],\"requests\":[{\"input\":{\"select\":[\"b\"],\"where\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"]},\"op\":\"solve\"},{\"input\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"where\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/62848412\",\"revision\":1}},{\"ok\":true,\"result\":[{\"b\":\"x\"},{\"b\":null}]},{\"ok\":true,\"result\":{\"key\":\"doc/62848412\",\"revision\":1,\"value\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}}}},{\"ok\":true,\"result\":{\"key\":\"doc/62848412\",\"revision\":2}},{\"ok\":true,\"result\":[{\"x\":[1]}]},{\"ok\":true,\"result\":{\"key\":\"doc/94410124\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/62848412\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/94410124\",\"revision\":3,\"value\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/62848412\",\"op\":\"get\"},{\"key\":\"doc/62848412\",\"op\":\"put\",\"value\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}}},{\"key\":\"doc/62848412\",\"op\":\"evaluate\"},{\"key\":\"doc/62848412\",\"op\":\"get\"},{\"key\":\"doc/62848412\",\"op\":\"put\",\"value\":{\"rows\":[{\"x\":[1]},{\"x\":[2]}],\"select\":[\"x\"],\"where\":{\"x\":[1]}}},{\"key\":\"doc/62848412\",\"op\":\"evaluate\"},{\"key\":\"doc/94410124\",\"op\":\"put\",\"value\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}}},{\"key\":\"doc/62848412\",\"op\":\"delete\"},{\"key\":\"doc/62848412\",\"op\":\"get\"},{\"key\":\"doc/62848412\",\"op\":\"delete\"},{\"key\":\"doc/94410124\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/67124500\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/94410124\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/62848412\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/62848412\",\"doc/94410124\",\"other/67124500\"]},{\"ok\":true,\"result\":[\"doc/62848412\",\"doc/94410124\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/67124500\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/94410124\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/67124500\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/67124500\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/94410124\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/62848412\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/67124500\",\"op\":\"get\"},{\"key\":\"other/67124500\",\"op\":\"evaluate\"},{\"key\":\"doc/62848412\",\"op\":\"evaluate\"},{\"key\":\"doc/94410124\",\"op\":\"get\"},{\"key\":\"other/67124500\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/62848412\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"record_query","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Record Query — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: rows (objects), where (object), select (list of field names). Keep rows containing every where field with an equal JSON value. Return selected fields for each in source order; missing selected fields become null. Values contain no booleans compared with numbers.\nRequired input fields: rows, where, select.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"rows\": [\n {\n \"a\": 1,\n \"b\": \"x\"\n },\n {\n \"a\": 2\n },\n {\n \"a\": 1\n }\n ],\n \"where\": {\n \"a\": 1\n },\n \"select\": [\n \"b\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"b\": \"x\"\n },\n {\n \"b\": null\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"rows\": [],\n \"where\": {},\n \"select\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"rows\":[{\"a\":1,\"b\":\"x\"},{\"a\":2},{\"a\":1}],\"select\":[\"b\"],\"where\":{\"a\":1}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[{\"b\":\"x\"},{\"b\":null}]}},{\"request\":{\"input\":{\"rows\":[],\"select\":[],\"where\":{}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-012-record-query","timeout_seconds":10,"title":"Record Query — workspace service"} 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\"},{\"input\":{\"key\":\"k\",\"left\":[{\"k\":2},{\"k\":0},{\"k\":1},{\"k\":3},{\"k\":2},{\"k\":2},{\"k\":3}],\"right\":[{\"k\":1},{\"k\":3},{\"k\":2}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[{\"k\":3}],\"right\":[{\"k\":0},{\"k\":1},{\"k\":2}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[{\"k\":1},{\"k\":2},{\"k\":3},{\"k\":3},{\"k\":3},{\"k\":2}],\"right\":[{\"k\":2},{\"k\":3},{\"k\":2},{\"k\":1},{\"k\":0},{\"k\":3}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[],\"right\":[{\"k\":3}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[{\"k\":1}],\"right\":[{\"k\":0},{\"k\":2},{\"k\":3},{\"k\":1},{\"k\":2},{\"k\":0}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[{\"k\":2},{\"k\":0},{\"k\":2},{\"k\":2},{\"k\":3},{\"k\":1}],\"right\":[{\"k\":3},{\"k\":3},{\"k\":3},{\"k\":0},{\"k\":0}]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[{\"left\":{\"id\":2},\"right\":{\"id\":2}},{\"left\":{\"id\":2},\"right\":{\"id\":2,\"x\":3}}]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[{\"left\":{\"k\":null},\"right\":{\"k\":null}}]},{\"ok\":true,\"result\":[{\"left\":{\"k\":1},\"right\":{\"k\":1}},{\"left\":{\"k\":1},\"right\":{\"k\":1}}]}],\"requests\":[{\"input\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[],\"right\":[]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[{}],\"right\":[{}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[{\"k\":null}],\"right\":[{\"k\":null}]},\"op\":\"solve\"},{\"input\":{\"key\":\"k\",\"left\":[{\"k\":1},{\"k\":1}],\"right\":[{\"k\":1}]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[{\"left\":{\"id\":2},\"right\":{\"id\":2}},{\"left\":{\"id\":2},\"right\":{\"id\":2,\"x\":3}}]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[{\"left\":{\"id\":2},\"right\":{\"id\":2}},{\"left\":{\"id\":2},\"right\":{\"id\":2,\"x\":3}}]}],\"requests\":[{\"input\":{\"key\":\"id\",\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]},\"op\":\"solve\"},{\"input\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}]},\"op\":\"solve\"},{\"input\":{\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/79362270\",\"revision\":1}},{\"ok\":true,\"result\":[{\"left\":{\"id\":2},\"right\":{\"id\":2}},{\"left\":{\"id\":2},\"right\":{\"id\":2,\"x\":3}}]},{\"ok\":true,\"result\":{\"key\":\"doc/79362270\",\"revision\":1,\"value\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]}}},{\"ok\":true,\"result\":{\"key\":\"doc/79362270\",\"revision\":2}},{\"ok\":true,\"result\":[{\"left\":{\"k\":1},\"right\":{\"k\":1}},{\"left\":{\"k\":1},\"right\":{\"k\":1}}]},{\"ok\":true,\"result\":{\"key\":\"doc/89365463\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/79362270\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/89365463\",\"revision\":3,\"value\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/79362270\",\"op\":\"get\"},{\"key\":\"doc/79362270\",\"op\":\"put\",\"value\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]}},{\"key\":\"doc/79362270\",\"op\":\"evaluate\"},{\"key\":\"doc/79362270\",\"op\":\"get\"},{\"key\":\"doc/79362270\",\"op\":\"put\",\"value\":{\"key\":\"k\",\"left\":[{\"k\":1},{\"k\":1}],\"right\":[{\"k\":1}]}},{\"key\":\"doc/79362270\",\"op\":\"evaluate\"},{\"key\":\"doc/89365463\",\"op\":\"put\",\"value\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]}},{\"key\":\"doc/79362270\",\"op\":\"delete\"},{\"key\":\"doc/79362270\",\"op\":\"get\"},{\"key\":\"doc/79362270\",\"op\":\"delete\"},{\"key\":\"doc/89365463\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/88177387\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/89365463\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/79362270\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/79362270\",\"doc/89365463\",\"other/88177387\"]},{\"ok\":true,\"result\":[\"doc/79362270\",\"doc/89365463\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/88177387\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/89365463\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/88177387\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/88177387\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/89365463\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/79362270\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/88177387\",\"op\":\"get\"},{\"key\":\"other/88177387\",\"op\":\"evaluate\"},{\"key\":\"doc/79362270\",\"op\":\"evaluate\"},{\"key\":\"doc/89365463\",\"op\":\"get\"},{\"key\":\"other/88177387\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/79362270\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"inner_join","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Inner Join — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: left,right (lists of objects), key (string). Return [{left,right}] for all pairs with key present on both sides and equal JSON values. Order by left source index then right source index; duplicates multiply. Null keys can match. No boolean-versus-number comparisons.\nRequired input fields: left, right, key.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"left\": [\n {\n \"id\": 1\n },\n {\n \"id\": 2\n }\n ],\n \"right\": [\n {\n \"id\": 2\n },\n {\n \"id\": 2,\n \"x\": 3\n }\n ],\n \"key\": \"id\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"left\": {\n \"id\": 2\n },\n \"right\": {\n \"id\": 2\n }\n },\n {\n \"left\": {\n \"id\": 2\n },\n \"right\": {\n \"id\": 2,\n \"x\": 3\n }\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"left\": [],\n \"right\": [],\n \"key\": \"k\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"key\":\"id\",\"left\":[{\"id\":1},{\"id\":2}],\"right\":[{\"id\":2},{\"id\":2,\"x\":3}]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[{\"left\":{\"id\":2},\"right\":{\"id\":2}},{\"left\":{\"id\":2},\"right\":{\"id\":2,\"x\":3}}]}},{\"request\":{\"input\":{\"key\":\"k\",\"left\":[],\"right\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-013-inner-join","timeout_seconds":10,"title":"Inner Join — workspace service"} 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e-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/16417938\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"group_totals","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Group Totals — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: rows (objects), group,value (field names). Each row has a string group value and integer numeric value. Return [{key,count,sum}] sorted by key. Empty rows returns [].\nRequired input fields: rows, group, value.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"rows\": [\n {\n \"g\": \"b\",\n \"v\": 2\n },\n {\n \"g\": \"a\",\n \"v\": 3\n },\n {\n \"g\": \"b\",\n \"v\": -1\n }\n ],\n \"group\": \"g\",\n \"value\": \"v\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"key\": \"a\",\n \"count\": 1,\n \"sum\": 3\n },\n {\n \"key\": \"b\",\n \"count\": 2,\n \"sum\": 1\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"rows\": [],\n \"group\": \"g\",\n \"value\": \"v\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"group\":\"g\",\"rows\":[{\"g\":\"b\",\"v\":2},{\"g\":\"a\",\"v\":3},{\"g\":\"b\",\"v\":-1}],\"value\":\"v\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[{\"count\":1,\"key\":\"a\",\"sum\":3},{\"count\":2,\"key\":\"b\",\"sum\":1}]}},{\"request\":{\"input\":{\"group\":\"g\",\"rows\":[],\"value\":\"v\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-014-group-totals","timeout_seconds":10,"title":"Group Totals — workspace service"} 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":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[],{},null],\"x\":true,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[-6,-8,-4,5,2,-6,5,-1],{},null],\"x\":\"é\",\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[-8,-5,-8],{},null],\"x\":null,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[8,7,8,1,-9,3,-5,4],{},null],\"x\":\"é\",\"~\":{\"\":5}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[1,9,4,1,-7,-7,2,5,-6,-9],{},null],\"x\":null,\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[-6,2,3,-5,-6,9,2,-1,5,-7],{},null],\"x\":null,\"~\":{\"\":7}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[2,-7,5,-7,4,-3,1,-5,-7,-8],{},null],\"x\":true,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[-5,6,3,-3,-4,-2,9,-4,3],{},null],\"x\":null,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[8],{},null],\"x\":true,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[8,7,-5,-1,7,-7,3,-9],{},null],\"x\":null,\"~\":{\"\":3}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[-6,-8,4,6,0],{},null],\"x\":true,\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[1],{},null],\"x\":null,\"~\":{\"\":5}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[],{},null],\"x\":true,\"~\":{\"\":4}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[-3],{},null],\"x\":\"é\",\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[[8,7,7],{},null],\"x\":\"é\",\"~\":{\"\":0}}},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"/a/0\":1,\"/a/1/x~1y\":null,\"/b\":{}}},{\"ok\":true,\"result\":{\"\":[]}},{\"ok\":true,\"result\":{\"\":null}},{\"ok\":true,\"result\":{\"/\":3,\"/~0/~1\":2}},{\"ok\":true,\"result\":{\"/0\":false,\"/1\":{},\"/2\":[]}}],\"requests\":[{\"input\":{\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}},\"op\":\"solve\"},{\"input\":{\"value\":[]},\"op\":\"solve\"},{\"input\":{\"value\":null},\"op\":\"solve\"},{\"input\":{\"value\":{\"\":3,\"~\":{\"/\":2}}},\"op\":\"solve\"},{\"input\":{\"value\":[false,{},[]]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"/a/0\":1,\"/a/1/x~1y\":null,\"/b\":{}}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"/a/0\":1,\"/a/1/x~1y\":null,\"/b\":{}}}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/35362328\",\"revision\":1}},{\"ok\":true,\"result\":{\"/a/0\":1,\"/a/1/x~1y\":null,\"/b\":{}}},{\"ok\":true,\"result\":{\"key\":\"doc/35362328\",\"revision\":1,\"value\":{\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}}}},{\"ok\":true,\"result\":{\"key\":\"doc/35362328\",\"revision\":2}},{\"ok\":true,\"result\":{\"/0\":false,\"/1\":{},\"/2\":[]}},{\"ok\":true,\"result\":{\"key\":\"doc/35709803\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/35362328\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/35709803\",\"revision\":3,\"value\":{\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/35362328\",\"op\":\"get\"},{\"key\":\"doc/35362328\",\"op\":\"put\",\"value\":{\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}}},{\"key\":\"doc/35362328\",\"op\":\"evaluate\"},{\"key\":\"doc/35362328\",\"op\":\"get\"},{\"key\":\"doc/35362328\",\"op\":\"put\",\"value\":{\"value\":[false,{},[]]}},{\"key\":\"doc/35362328\",\"op\":\"evaluate\"},{\"key\":\"doc/35709803\",\"op\":\"put\",\"value\":{\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}}},{\"key\":\"doc/35362328\",\"op\":\"delete\"},{\"key\":\"doc/35362328\",\"op\":\"get\"},{\"key\":\"doc/35362328\",\"op\":\"delete\"},{\"key\":\"doc/35709803\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/91919249\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/35709803\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/35362328\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/35362328\",\"doc/35709803\",\"other/91919249\"]},{\"ok\":true,\"result\":[\"doc/35362328\",\"doc/35709803\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/91919249\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/35709803\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/91919249\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/91919249\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/35709803\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/35362328\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/91919249\",\"op\":\"get\"},{\"key\":\"other/91919249\",\"op\":\"evaluate\"},{\"key\":\"doc/35362328\",\"op\":\"evaluate\"},{\"key\":\"doc/35709803\",\"op\":\"get\"},{\"key\":\"other/91919249\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/35362328\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"json_flatten","language":"python","num_assertions":82,"num_scenarios":8,"prompt":"# Json Flatten — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: arbitrary JSON value. Return an object mapping JSON Pointer paths to leaves. Root path is \"\". Escape ~ as ~0 and / as ~1; array indices are decimal. Empty objects/arrays count as leaves. Nonempty containers do not produce their own entries.\nRequired input fields: value.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"value\": {\n \"a\": [\n 1,\n {\n \"x/y\": null\n }\n ],\n \"b\": {}\n }\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"/a/0\": 1,\n \"/a/1/x~1y\": null,\n \"/b\": {}\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"value\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"\": []\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"value\":{\"a\":[1,{\"x/y\":null}],\"b\":{}}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"/a/0\":1,\"/a/1/x~1y\":null,\"/b\":{}}}},{\"request\":{\"input\":{\"value\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"\":[]}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-015-json-flatten","timeout_seconds":10,"title":"Json Flatten — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"x\":{\"v\":7},\"~\":{\"\":2}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":3},\"~\":{\"\":4}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":5},\"~\":{\"\":5}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":8},\"~\":{\"\":0}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":6},\"~\":{\"\":2}}},{\"ok\":true,\"result\":{\"x\":{\"v\":3},\"~\":{\"\":8}}},{\"ok\":true,\"result\":{\"x\":{\"v\":1},\"~\":{\"\":1}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":2},\"~\":{\"\":8}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":7},\"~\":{\"\":8}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":0},\"~\":{\"\":0}}},{\"ok\":true,\"result\":{\"x\":{\"v\":0},\"~\":{\"\":8}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":4},\"~\":{\"\":3}}},{\"ok\":true,\"result\":{\"x\":{\"v\":8},\"~\":{\"\":8}}},{\"ok\":true,\"result\":{\"x\":{\"v\":1},\"~\":{\"\":2}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":0},\"~\":{\"\":1}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":6},\"~\":{\"\":0}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":4},\"~\":{\"\":2}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":6},\"~\":{\"\":8}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":5},\"~\":{\"\":3}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":5},\"~\":{\"\":2}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":3},\"~\":{\"\":1}}},{\"ok\":true,\"result\":{\"a/b\":{\"z\":2},\"x\":{\"v\":2},\"~\":{\"\":2}}},{\"ok\":true,\"result\":{\"a/b\":[1],\"x\":{\"v\":5},\"~\":{\"\":3}}},{\"ok\":true,\"result\":{\"x\":{\"v\":3},\"~\":{\"\":0}}}],\"requests\":[{\"input\":{\"patch\":{\"a/b\":null,\"x\":{\"v\":7}},\"target\":{\"a/b\":[[-7,-9,0,7,8,-2],{},null],\"x\":\"é\",\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":3}},\"target\":{\"a/b\":[[6,1,-3,0],{},null],\"x\":\"é\",\"~\":{\"\":4}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":5}},\"target\":{\"a/b\":[[-2,6,-6,-7,2],{},null],\"x\":\"é\",\"~\":{\"\":5}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":8}},\"target\":{\"a/b\":[[-8,5],{},null],\"x\":null,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":6}},\"target\":{\"a/b\":[[8,-9,6,-7,-3,-2,-9,4,-8,0],{},null],\"x\":null,\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":null,\"x\":{\"v\":3}},\"target\":{\"a/b\":[[6,0,3],{},null],\"x\":null,\"~\":{\"\":8}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":null,\"x\":{\"v\":1}},\"target\":{\"a/b\":[[6,-7,2,2,-2,7],{},null],\"x\":\"é\",\"~\":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":2}},\"target\":{\"a/b\":[[-7,4,1,4,1,5,0,-8,1,0,-7],{},null],\"x\":\"é\",\"~\":{\"\":8}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":7}},\"target\":{\"a/b\":[[-3,4,-8,-6,-8,2,-2,8,-9],{},null],\"x\":true,\"~\":{\"\":8}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":0}},\"target\":{\"a/b\":[[-9],{},null],\"x\":true,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":null,\"x\":{\"v\":0}},\"target\":{\"a/b\":[[5,1,-4,5,6,-4,3,5],{},null],\"x\":true,\"~\":{\"\":8}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":4}},\"target\":{\"a/b\":[[-6,4,-7,-7,-4,9,3,-6,9,8,2],{},null],\"x\":null,\"~\":{\"\":3}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":null,\"x\":{\"v\":8}},\"target\":{\"a/b\":[[0,6,-5,5,-5,-9],{},null],\"x\":null,\"~\":{\"\":8}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":null,\"x\":{\"v\":1}},\"target\":{\"a/b\":[[],{},null],\"x\":\"é\",\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":0}},\"target\":{\"a/b\":[[3,9,-3],{},null],\"x\":\"é\",\"~\":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":6}},\"target\":{\"a/b\":[[-6,-2,1],{},null],\"x\":null,\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":4}},\"target\":{\"a/b\":[[-4],{},null],\"x\":null,\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":6}},\"target\":{\"a/b\":[[3,-1,7,-6,-4],{},null],\"x\":true,\"~\":{\"\":8}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":5}},\"target\":{\"a/b\":[[-7,-4,1,-4,-1,5,-5],{},null],\"x\":null,\"~\":{\"\":3}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":5}},\"target\":{\"a/b\":[[0,-3,6,9,-1,-6,-2,-7],{},null],\"x\":null,\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":3}},\"target\":{\"a/b\":[[3,8,8,-6,7],{},null],\"x\":\"é\",\"~\":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":{\"z\":2},\"x\":{\"v\":2}},\"target\":{\"a/b\":[[4,1,0,-1,8,7,-7,3,6,4],{},null],\"x\":null,\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":[1],\"x\":{\"v\":5}},\"target\":{\"a/b\":[[8,-2,-5,-1,8,-1,8,-8,3],{},null],\"x\":\"é\",\"~\":{\"\":3}}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a/b\":null,\"x\":{\"v\":3}},\"target\":{\"a/b\":[[-8,2,-6,2],{},null],\"x\":\"é\",\"~\":{\"\":0}}},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"b\":{\"c\":9,\"d\":3}}},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":{\"x\":2}},{\"ok\":true,\"result\":{\"a\":[2,3]}},{\"ok\":true,\"result\":{}},{\"ok\":true,\"result\":{\"a\":1}}],\"requests\":[{\"input\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}},\"op\":\"solve\"},{\"input\":{\"patch\":null,\"target\":{}},\"op\":\"solve\"},{\"input\":{\"patch\":{\"x\":2},\"target\":[1]},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a\":[2,3]},\"target\":{\"a\":[1]}},\"op\":\"solve\"},{\"input\":{\"patch\":{},\"target\":4},\"op\":\"solve\"},{\"input\":{\"patch\":{\"z\":null},\"target\":{\"a\":1}},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"b\":{\"c\":9,\"d\":3}}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"b\":{\"c\":9,\"d\":3}}}],\"requests\":[{\"input\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}}},\"op\":\"solve\"},{\"input\":{\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/63225404\",\"revision\":1}},{\"ok\":true,\"result\":{\"b\":{\"c\":9,\"d\":3}}},{\"ok\":true,\"result\":{\"key\":\"doc/63225404\",\"revision\":1,\"value\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}}}},{\"ok\":true,\"result\":{\"key\":\"doc/63225404\",\"revision\":2}},{\"ok\":true,\"result\":{\"a\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/64693403\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/63225404\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/64693403\",\"revision\":3,\"value\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/63225404\",\"op\":\"get\"},{\"key\":\"doc/63225404\",\"op\":\"put\",\"value\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}}},{\"key\":\"doc/63225404\",\"op\":\"evaluate\"},{\"key\":\"doc/63225404\",\"op\":\"get\"},{\"key\":\"doc/63225404\",\"op\":\"put\",\"value\":{\"patch\":{\"z\":null},\"target\":{\"a\":1}}},{\"key\":\"doc/63225404\",\"op\":\"evaluate\"},{\"key\":\"doc/64693403\",\"op\":\"put\",\"value\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}}},{\"key\":\"doc/63225404\",\"op\":\"delete\"},{\"key\":\"doc/63225404\",\"op\":\"get\"},{\"key\":\"doc/63225404\",\"op\":\"delete\"},{\"key\":\"doc/64693403\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/18387988\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/64693403\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/63225404\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/63225404\",\"doc/64693403\",\"other/18387988\"]},{\"ok\":true,\"result\":[\"doc/63225404\",\"doc/64693403\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/18387988\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/64693403\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/18387988\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/18387988\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/64693403\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/63225404\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/18387988\",\"op\":\"get\"},{\"key\":\"other/18387988\",\"op\":\"evaluate\"},{\"key\":\"doc/63225404\",\"op\":\"evaluate\"},{\"key\":\"doc/64693403\",\"op\":\"get\"},{\"key\":\"other/18387988\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/63225404\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"merge_patch","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Merge Patch — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: target,patch (JSON values). Apply JSON Merge Patch: a nonobject patch replaces the target. An object patch treats a nonobject target as {}; null-valued members remove keys; other members recursively merge. Arrays replace wholesale. Return resulting value.\nRequired input fields: target, patch.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"target\": {\n \"a\": 1,\n \"b\": {\n \"c\": 2,\n \"d\": 3\n }\n },\n \"patch\": {\n \"a\": null,\n \"b\": {\n \"c\": 9\n }\n }\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"b\": {\n \"c\": 9,\n \"d\": 3\n }\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"target\": {},\n \"patch\": null\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": null\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"patch\":{\"a\":null,\"b\":{\"c\":9}},\"target\":{\"a\":1,\"b\":{\"c\":2,\"d\":3}}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"b\":{\"c\":9,\"d\":3}}}},{\"request\":{\"input\":{\"patch\":null,\"target\":{}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":null}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-016-merge-patch","timeout_seconds":10,"title":"Merge Patch — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":true,\"value\":{\"a/b\":[[-8,-2,8,7,2,3,6,-9],{},null],\"x\":null,\"~\":{\"\":7}}}},{\"ok\":true,\"result\":{\"found\":true,\"value\":6}},{\"ok\":true,\"result\":{\"found\":true,\"value\":6}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":true,\"value\":[-2,-3]}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":true,\"value\":2}},{\"ok\":true,\"result\":{\"found\":true,\"value\":[-4,-2,1,-2]}},{\"ok\":true,\"result\":{\"found\":true,\"value\":{\"a/b\":[[6,8,3,6,6,-7,5,0],{},null],\"x\":null,\"~\":{\"\":5}}}},{\"ok\":true,\"result\":{\"found\":true,\"value\":{\"a/b\":[[-1,0],{},null],\"x\":null,\"~\":{\"\":1}}}},{\"ok\":true,\"result\":{\"found\":true,\"value\":[-5,-5]}},{\"ok\":true,\"result\":{\"found\":true,\"value\":{\"a/b\":[[-4,-4,4,-1,-6,-9,6,-2,5,-7],{},null],\"x\":true,\"~\":{\"\":1}}}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":true,\"value\":1}},{\"ok\":true,\"result\":{\"found\":true,\"value\":6}},{\"ok\":true,\"result\":{\"found\":true,\"value\":[1,-4,1,9,-4,-3]}},{\"ok\":true,\"result\":{\"found\":true,\"value\":{\"a/b\":[[8,7,-3,4,7,-1],{},null],\"x\":true,\"~\":{\"\":4}}}},{\"ok\":true,\"result\":{\"found\":true,\"value\":[-2,0,7,-4,3,-2,8,-5]}}],\"requests\":[{\"input\":{\"pointer\":\"/a~1b/99\",\"value\":{\"a/b\":[[4,-4],{},null],\"x\":true,\"~\":{\"\":3}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"\",\"value\":{\"a/b\":[[-8,-2,8,7,2,3,6,-9],{},null],\"x\":null,\"~\":{\"\":7}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/~0/\",\"value\":{\"a/b\":[[8],{},null],\"x\":\"é\",\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/~0/\",\"value\":{\"a/b\":[[0,-1,2,8,1,-8],{},null],\"x\":\"é\",\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/x/no\",\"value\":{\"a/b\":[[8,-1,-1,-8,9,4],{},null],\"x\":\"é\",\"~\":{\"\":0}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[[-2,-3],{},null],\"x\":true,\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/absent\",\"value\":{\"a/b\":[[-8,-2,-7,1],{},null],\"x\":null,\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/absent\",\"value\":{\"a/b\":[[],{},null],\"x\":null,\"~\":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/99\",\"value\":{\"a/b\":[[-7,-1,8,5,-6,1,-7,-6,6,4],{},null],\"x\":null,\"~\":{\"\":8}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/x/no\",\"value\":{\"a/b\":[[-1,0,-3],{},null],\"x\":\"é\",\"~\":{\"\":5}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/x/no\",\"value\":{\"a/b\":[[-5,3,-5,1,8,2,-3,-1,-9,-7],{},null],\"x\":null,\"~\":{\"\":5}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/absent\",\"value\":{\"a/b\":[[-6,-9,0,-5,-3,-5,1,3,-3],{},null],\"x\":\"é\",\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/~0/\",\"value\":{\"a/b\":[[5,-7,-2,9,-3,4,4,5,9,-6],{},null],\"x\":\"é\",\"~\":{\"\":2}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[[-4,-2,1,-2],{},null],\"x\":true,\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"\",\"value\":{\"a/b\":[[6,8,3,6,6,-7,5,0],{},null],\"x\":null,\"~\":{\"\":5}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"\",\"value\":{\"a/b\":[[-1,0],{},null],\"x\":null,\"~\":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[[-5,-5],{},null],\"x\":null,\"~\":{\"\":3}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"\",\"value\":{\"a/b\":[[-4,-4,4,-1,-6,-9,6,-2,5,-7],{},null],\"x\":true,\"~\":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/99\",\"value\":{\"a/b\":[[3,-6,-4,1,-7,2,6,-6,-8,5,6],{},null],\"x\":true,\"~\":{\"\":4}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/~0/\",\"value\":{\"a/b\":[[6,-6,-2,-9,1,6,-7,6,-8,2],{},null],\"x\":\"é\",\"~\":{\"\":1}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/~0/\",\"value\":{\"a/b\":[[-7,8,-6,5,4,9,4,-4,0,-3],{},null],\"x\":null,\"~\":{\"\":6}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[[1,-4,1,9,-4,-3],{},null],\"x\":true,\"~\":{\"\":7}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"\",\"value\":{\"a/b\":[[8,7,-3,4,7,-1],{},null],\"x\":true,\"~\":{\"\":4}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[[-2,0,7,-4,3,-2,8,-5],{},null],\"x\":\"é\",\"~\":{\"\":1}}},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"found\":true,\"value\":7}},{\"ok\":true,\"result\":{\"found\":true,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":true,\"value\":2}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}}],\"requests\":[{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"\",\"value\":null},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/01\",\"value\":[1]},\"op\":\"solve\"},{\"input\":{\"pointer\":\"//~0\",\"value\":{\"\":{\"~\":2}}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/9\",\"value\":[1]},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a/x\",\"value\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/-\",\"value\":[]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"found\":true,\"value\":7}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"found\":true,\"value\":7}}],\"requests\":[{\"input\":{\"pointer\":\"/a~1b/0\"},\"op\":\"solve\"},{\"input\":{\"value\":{\"a/b\":[7]}},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/14404851\",\"revision\":1}},{\"ok\":true,\"result\":{\"found\":true,\"value\":7}},{\"ok\":true,\"result\":{\"key\":\"doc/14404851\",\"revision\":1,\"value\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}}}},{\"ok\":true,\"result\":{\"key\":\"doc/14404851\",\"revision\":2}},{\"ok\":true,\"result\":{\"found\":false,\"value\":null}},{\"ok\":true,\"result\":{\"key\":\"doc/75515289\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/14404851\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/75515289\",\"revision\":3,\"value\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/14404851\",\"op\":\"get\"},{\"key\":\"doc/14404851\",\"op\":\"put\",\"value\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}}},{\"key\":\"doc/14404851\",\"op\":\"evaluate\"},{\"key\":\"doc/14404851\",\"op\":\"get\"},{\"key\":\"doc/14404851\",\"op\":\"put\",\"value\":{\"pointer\":\"/-\",\"value\":[]}},{\"key\":\"doc/14404851\",\"op\":\"evaluate\"},{\"key\":\"doc/75515289\",\"op\":\"put\",\"value\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}}},{\"key\":\"doc/14404851\",\"op\":\"delete\"},{\"key\":\"doc/14404851\",\"op\":\"get\"},{\"key\":\"doc/14404851\",\"op\":\"delete\"},{\"key\":\"doc/75515289\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/85661170\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/75515289\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/14404851\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/14404851\",\"doc/75515289\",\"other/85661170\"]},{\"ok\":true,\"result\":[\"doc/14404851\",\"doc/75515289\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/85661170\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/75515289\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/85661170\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/85661170\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/75515289\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/14404851\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/85661170\",\"op\":\"get\"},{\"key\":\"other/85661170\",\"op\":\"evaluate\"},{\"key\":\"doc/14404851\",\"op\":\"evaluate\"},{\"key\":\"doc/75515289\",\"op\":\"get\"},{\"key\":\"other/85661170\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/14404851\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"json_pointer","language":"python","num_assertions":85,"num_scenarios":8,"prompt":"# Json Pointer — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: value (JSON), pointer (empty or starting /, valid ~0/~1 escapes). Resolve object keys or array indices. Array tokens must be 0 or a nonzero decimal digit followed by decimal digits (no leading zero, sign, or -). Return {found:true,value:...}; missing keys, noncontainers or out-of-range indices return {found:false,value:null}. Empty pointer returns root.\nRequired input fields: value, pointer.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"value\": {\n \"a/b\": [\n 7\n ]\n },\n \"pointer\": \"/a~1b/0\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"found\": true,\n \"value\": 7\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"value\": null,\n \"pointer\": \"\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"found\": true,\n \"value\": null\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"pointer\":\"/a~1b/0\",\"value\":{\"a/b\":[7]}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"found\":true,\"value\":7}}},{\"request\":{\"input\":{\"pointer\":\"\",\"value\":null},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"found\":true,\"value\":null}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-017-json-pointer","timeout_seconds":10,"title":"Json Pointer — workspace service"} 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Dedupe Records — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: rows (objects), keys (field names). Retain first row for each distinct tuple of requested field values; missing fields equal null. Structural JSON equality ignores object key order. Keep source order. 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Pivot Table — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: rows, row,column,value field names. Row/column values are strings; numeric values are integers. Return {rows:sorted row labels,columns:sorted column labels,values:2D sums}, filling missing cells with 0. Empty input yields three empty arrays.\nRequired input fields: rows, row, column, value.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"rows\": [\n {\n \"r\": \"a\",\n \"c\": \"x\",\n \"v\": 2\n },\n {\n \"r\": \"b\",\n \"c\": \"y\",\n \"v\": 3\n },\n {\n \"r\": \"a\",\n \"c\": \"x\",\n \"v\": -1\n }\n ],\n \"row\": \"r\",\n \"column\": \"c\",\n \"value\": \"v\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"rows\": [\n \"a\",\n \"b\"\n ],\n \"columns\": [\n \"x\",\n \"y\"\n ],\n \"values\": [\n [\n 1,\n 0\n ],\n [\n 0,\n 3\n ]\n ]\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"rows\": [],\n \"row\": \"r\",\n \"column\": \"c\",\n \"value\": \"v\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"rows\": [],\n \"columns\": [],\n \"values\": []\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"column\":\"c\",\"row\":\"r\",\"rows\":[{\"c\":\"x\",\"r\":\"a\",\"v\":2},{\"c\":\"y\",\"r\":\"b\",\"v\":3},{\"c\":\"x\",\"r\":\"a\",\"v\":-1}],\"value\":\"v\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"columns\":[\"x\",\"y\"],\"rows\":[\"a\",\"b\"],\"values\":[[1,0],[0,3]]}}},{\"request\":{\"input\":{\"column\":\"c\",\"row\":\"r\",\"rows\":[],\"value\":\"v\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"columns\":[],\"rows\":[],\"values\":[]}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-019-pivot-table","timeout_seconds":10,"title":"Pivot Table — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"required\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"required\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"},{\"error\":\"required\",\"field\":\"c\"}]},{\"ok\":true,\"result\":[{\"error\":\"required\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"type\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"c\"}]}],\"requests\":[{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"number\"},\"b\":{\"required\":false,\"type\":\"integer\"},\"c\":{\"required\":true,\"type\":\"null\"}},\"value\":{\"a\":{}}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"array\"},\"b\":{\"required\":true,\"type\":\"integer\"},\"c\":{\"required\":false,\"type\":\"object\"}},\"value\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"boolean\"},\"b\":{\"required\":false,\"type\":\"string\"},\"c\":{\"required\":true,\"type\":\"boolean\"}},\"value\":{\"a\":true,\"b\":1}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"boolean\"},\"b\":{\"required\":false,\"type\":\"null\"},\"c\":{\"required\":true,\"type\":\"number\"}},\"value\":{\"a\":1,\"b\":[]}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"null\"},\"b\":{\"required\":true,\"type\":\"boolean\"},\"c\":{\"required\":false,\"type\":\"integer\"}},\"value\":{\"a\":1,\"b\":1.5}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"object\"},\"b\":{\"required\":false,\"type\":\"boolean\"},\"c\":{\"required\":true,\"type\":\"number\"}},\"value\":{\"a\":\"x\",\"b\":1.5}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"null\"},\"b\":{\"required\":false,\"type\":\"boolean\"},\"c\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":{},\"b\":[]}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"null\"},\"b\":{\"required\":false,\"type\":\"boolean\"},\"c\":{\"required\":true,\"type\":\"boolean\"}},\"value\":{\"a\":null}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"array\"},\"b\":{\"required\":false,\"type\":\"string\"},\"c\":{\"required\":false,\"type\":\"object\"}},\"value\":{\"a\":\"x\",\"b\":[]}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"array\"},\"b\":{\"required\":false,\"type\":\"array\"},\"c\":{\"required\":true,\"type\":\"array\"}},\"value\":{\"a\":[],\"b\":1.5}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"number\"},\"b\":{\"required\":false,\"type\":\"boolean\"},\"c\":{\"required\":false,\"type\":\"string\"}},\"value\":{\"b\":\"x\"}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"integer\"},\"c\":{\"required\":false,\"type\":\"string\"}},\"value\":{\"a\":\"x\",\"b\":1.5}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"boolean\"},\"b\":{\"required\":true,\"type\":\"null\"},\"c\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true,\"b\":[]}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"null\"},\"b\":{\"required\":false,\"type\":\"integer\"},\"c\":{\"required\":true,\"type\":\"object\"}},\"value\":{\"a\":1,\"b\":{}}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"object\"},\"b\":{\"required\":true,\"type\":\"array\"},\"c\":{\"required\":false,\"type\":\"boolean\"}},\"value\":{\"a\":\"x\",\"b\":\"x\"}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"string\"},\"b\":{\"required\":false,\"type\":\"boolean\"},\"c\":{\"required\":true,\"type\":\"number\"}},\"value\":{\"b\":{}}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"string\"},\"b\":{\"required\":false,\"type\":\"object\"},\"c\":{\"required\":false,\"type\":\"null\"}},\"value\":{\"b\":[]}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"string\"},\"b\":{\"required\":false,\"type\":\"number\"},\"c\":{\"required\":false,\"type\":\"boolean\"}},\"value\":{\"a\":1.5,\"b\":[]}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"array\"},\"b\":{\"required\":false,\"type\":\"object\"},\"c\":{\"required\":false,\"type\":\"boolean\"}},\"value\":{\"a\":true,\"b\":1}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"number\"},\"b\":{\"required\":false,\"type\":\"object\"},\"c\":{\"required\":false,\"type\":\"object\"}},\"value\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"null\"},\"b\":{\"required\":true,\"type\":\"null\"},\"c\":{\"required\":false,\"type\":\"string\"}},\"value\":{\"a\":1.5,\"b\":1}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"array\"},\"b\":{\"required\":true,\"type\":\"boolean\"},\"c\":{\"required\":false,\"type\":\"object\"}},\"value\":{\"a\":\"x\",\"b\":true}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"array\"},\"b\":{\"required\":true,\"type\":\"integer\"},\"c\":{\"required\":false,\"type\":\"number\"}},\"value\":{\"a\":{},\"b\":null}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":false,\"type\":\"null\"},\"b\":{\"required\":false,\"type\":\"boolean\"},\"c\":{\"required\":true,\"type\":\"integer\"}},\"value\":{\"a\":{},\"b\":true}},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"b\"}]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]}],\"requests\":[{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}},\"op\":\"solve\"},{\"input\":{\"schema\":{},\"value\":{\"a\":1}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"x\":{\"required\":false,\"type\":\"null\"}},\"value\":{}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"x\":{\"required\":true,\"type\":\"number\"}},\"value\":{\"x\":1.5}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"x\":{\"required\":true,\"type\":\"array\"}},\"value\":{\"x\":[]}},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"b\"}]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"b\"}]}],\"requests\":[{\"input\":{\"value\":{\"a\":true}},\"op\":\"solve\"},{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}}},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/19631538\",\"revision\":1}},{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"b\"}]},{\"ok\":true,\"result\":{\"key\":\"doc/19631538\",\"revision\":1,\"value\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}}}},{\"ok\":true,\"result\":{\"key\":\"doc/19631538\",\"revision\":2}},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"doc/25240759\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/19631538\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/25240759\",\"revision\":3,\"value\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/19631538\",\"op\":\"get\"},{\"key\":\"doc/19631538\",\"op\":\"put\",\"value\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}}},{\"key\":\"doc/19631538\",\"op\":\"evaluate\"},{\"key\":\"doc/19631538\",\"op\":\"get\"},{\"key\":\"doc/19631538\",\"op\":\"put\",\"value\":{\"schema\":{\"x\":{\"required\":true,\"type\":\"array\"}},\"value\":{\"x\":[]}}},{\"key\":\"doc/19631538\",\"op\":\"evaluate\"},{\"key\":\"doc/25240759\",\"op\":\"put\",\"value\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}}},{\"key\":\"doc/19631538\",\"op\":\"delete\"},{\"key\":\"doc/19631538\",\"op\":\"get\"},{\"key\":\"doc/19631538\",\"op\":\"delete\"},{\"key\":\"doc/25240759\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/13460915\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/25240759\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/19631538\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/19631538\",\"doc/25240759\",\"other/13460915\"]},{\"ok\":true,\"result\":[\"doc/19631538\",\"doc/25240759\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/13460915\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/25240759\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/13460915\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/13460915\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/25240759\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/19631538\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/13460915\",\"op\":\"get\"},{\"key\":\"other/13460915\",\"op\":\"evaluate\"},{\"key\":\"doc/19631538\",\"op\":\"evaluate\"},{\"key\":\"doc/25240759\",\"op\":\"get\"},{\"key\":\"other/13460915\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/19631538\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"data","entrypoint":"main.py","family":"schema_check","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Schema Check — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: schema object maps field names to {type,required}; value is an object. Types: string,integer,number,boolean,array,object,null. Booleans are neither integers nor numbers. For each schema field in lexical order, report {field,error:\"required\"} if missing and required, or {field,error:\"type\"} if present with wrong type. Optional missing fields and extra fields are ignored. No recursive validation.\nRequired input fields: schema, value.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"schema\": {\n \"a\": {\n \"type\": \"integer\",\n \"required\": true\n },\n \"b\": {\n \"type\": \"string\",\n \"required\": true\n }\n },\n \"value\": {\n \"a\": true\n }\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"field\": \"a\",\n \"error\": \"type\"\n },\n {\n \"field\": \"b\",\n \"error\": \"required\"\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"schema\": {},\n \"value\": {\n \"a\": 1\n }\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"schema\":{\"a\":{\"required\":true,\"type\":\"integer\"},\"b\":{\"required\":true,\"type\":\"string\"}},\"value\":{\"a\":true}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[{\"error\":\"type\",\"field\":\"a\"},{\"error\":\"required\",\"field\":\"b\"}]}},{\"request\":{\"input\":{\"schema\":{},\"value\":{\"a\":1}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-020-schema-check","timeout_seconds":10,"title":"Schema Check — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[[-6,8]]},{\"ok\":true,\"result\":[[-7,10]]},{\"ok\":true,\"result\":[[-7,6]]},{\"ok\":true,\"result\":[[-6,-2],[-1,3]]},{\"ok\":true,\"result\":[[-10,10]]},{\"ok\":true,\"result\":[[3,5]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[-6,9]]},{\"ok\":true,\"result\":[[-10,-10],[-9,-9],[-6,8]]},{\"ok\":true,\"result\":[[-10,10]]},{\"ok\":true,\"result\":[[-8,-1],[0,3]]},{\"ok\":true,\"result\":[[-10,7],[9,10]]},{\"ok\":true,\"result\":[[-6,9]]},{\"ok\":true,\"result\":[[-2,-1],[4,5]]},{\"ok\":true,\"result\":[[-6,9]]},{\"ok\":true,\"result\":[[8,10]]},{\"ok\":true,\"result\":[[-7,10]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[-9,9]]},{\"ok\":true,\"result\":[[-9,8]]},{\"ok\":true,\"result\":[[-10,9]]},{\"ok\":true,\"result\":[[-6,9]]},{\"ok\":true,\"result\":[[-7,8]]}],\"requests\":[{\"input\":{\"intervals\":[[-5,8],[-5,-1],[-6,-3]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-7,10],[4,10],[9,10],[-7,-6],[-6,0],[-5,-1]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-7,5],[6,6],[-6,6]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-6,-2],[-1,3]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[2,4],[-5,9],[5,9],[-10,9],[6,9],[3,7],[-8,10],[-6,-2]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[3,5]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[]},\"op\":\"solve\"},{\"input\":{\"intervals\":[]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-6,9],[6,9],[2,6],[1,3],[-3,8]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-9,-9],[-2,8],[-2,-2],[-10,-10],[-1,5],[-6,-2],[1,7],[1,6],[-6,-3]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[0,1],[-2,0],[-7,-1],[-8,5],[-5,-3],[-2,3],[2,10],[-10,9],[2,8]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-8,-1],[-8,-3],[-7,-4],[0,3],[-4,-4]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-10,4],[9,10],[-2,4],[-8,-4],[-5,-4],[-3,7]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-2,8],[2,9],[-6,3],[7,9],[-5,-1],[-4,8]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[4,5],[-2,-1]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-1,9],[-6,8],[0,4],[-4,4]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[8,10]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[7,7],[4,4],[-7,9],[-3,5],[2,5],[4,4],[-4,9],[-2,10]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-5,6],[1,9],[0,3],[7,8],[-2,2],[-8,9],[-8,-7],[-1,7],[-9,3]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[1,2],[2,2],[1,1],[-5,-2],[-9,8],[-2,2],[-6,-6]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[2,4],[-8,9],[-10,4],[-8,4],[2,6],[-7,-4],[-1,1],[-10,-4]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-5,-1],[0,4],[-6,8],[-3,9],[2,8],[5,8]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-4,7],[-6,-2],[-2,-2],[-3,0],[-7,8]]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[[1,7],[9,9]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[0,0]]},{\"ok\":true,\"result\":[[-4,3]]},{\"ok\":true,\"result\":[[1,10],[12,14]]}],\"requests\":[{\"input\":{\"intervals\":[[5,7],[1,3],[3,6],[9,9]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[0,0],[0,0]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[-4,-1],[-2,3]]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[1,10],[2,3],[12,14]]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[1,7],[9,9]]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"intervals\":[[5,7],[1,3],[3,6],[9,9]]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[1,7],[9,9]]}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"intervals\":[[5,7],[1,3],[3,6],[9,9]]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/27310938\",\"revision\":1}},{\"ok\":true,\"result\":[[1,7],[9,9]]},{\"ok\":true,\"result\":{\"key\":\"doc/27310938\",\"revision\":1,\"value\":{\"intervals\":[[5,7],[1,3],[3,6],[9,9]]}}},{\"ok\":true,\"result\":{\"key\":\"doc/27310938\",\"revision\":2}},{\"ok\":true,\"result\":[[1,10],[12,14]]},{\"ok\":true,\"result\":{\"key\":\"doc/98935595\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/27310938\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/98935595\",\"revision\":3,\"value\":{\"intervals\":[[5,7],[1,3],[3,6],[9,9]]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/27310938\",\"op\":\"get\"},{\"key\":\"doc/27310938\",\"op\":\"put\",\"value\":{\"intervals\":[[5,7],[1,3],[3,6],[9,9]]}},{\"key\":\"doc/27310938\",\"op\":\"evaluate\"},{\"key\":\"doc/27310938\",\"op\":\"get\"},{\"key\":\"doc/27310938\",\"op\":\"put\",\"value\":{\"intervals\":[[1,10],[2,3],[12,14]]}},{\"key\":\"doc/27310938\",\"op\":\"evaluate\"},{\"key\":\"doc/98935595\",\"op\":\"put\",\"value\":{\"intervals\":[[5,7],[1,3],[3,6],[9,9]]}},{\"key\":\"doc/27310938\",\"op\":\"delete\"},{\"key\":\"doc/27310938\",\"op\":\"get\"},{\"key\":\"doc/27310938\",\"op\":\"delete\"},{\"key\":\"doc/98935595\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/20839170\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/98935595\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/27310938\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/27310938\",\"doc/98935595\",\"other/20839170\"]},{\"ok\":true,\"result\":[\"doc/27310938\",\"doc/98935595\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/20839170\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/98935595\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/20839170\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/20839170\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/98935595\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/27310938\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/20839170\",\"op\":\"get\"},{\"key\":\"other/20839170\",\"op\":\"evaluate\"},{\"key\":\"doc/27310938\",\"op\":\"evaluate\"},{\"key\":\"doc/98935595\",\"op\":\"get\"},{\"key\":\"other/20839170\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/27310938\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"intervals","entrypoint":"main.py","family":"interval_union","language":"python","num_assertions":82,"num_scenarios":8,"prompt":"# Interval Union — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: intervals, list of [start,end] integer pairs with start<=end. Return sorted merged intervals, combining overlaps and touching endpoints. Retain isolated zero-length intervals.\nRequired input fields: intervals.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"intervals\": [\n [\n 5,\n 7\n ],\n [\n 1,\n 3\n ],\n [\n 3,\n 6\n ],\n [\n 9,\n 9\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 1,\n 7\n ],\n [\n 9,\n 9\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"intervals\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"intervals\":[[5,7],[1,3],[3,6],[9,9]]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[1,7],[9,9]]}},{\"request\":{\"input\":{\"intervals\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-021-interval-union","timeout_seconds":10,"title":"Interval Union — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[-5,-2]]},{\"ok\":true,\"result\":[[-4,0]]},{\"ok\":true,\"result\":[[-5,5]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[1,5]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[2,5]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]}],\"requests\":[{\"input\":{\"bounds\":[-5,5],\"intervals\":[[3,9],[-7,1],[-10,-6],[-3,7],[5,9]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[0,4],[-5,-2],[-10,0],[-9,10]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-2,3],[-2,-1],[-9,-5],[-8,-3],[-7,2],[-9,6],[2,4],[-6,0],[-6,-5]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-2,9],[0,5],[1,8],[5,8],[-1,0]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[0,10],[-8,-4],[-9,-9]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-6,0],[-1,8],[-10,9],[-10,-3],[1,5]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[4,5],[-8,-5],[2,10],[6,9],[-9,0],[0,10],[-8,9],[-9,3],[-8,8]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-6,6],[-4,2],[-10,8],[-7,-1],[-5,3]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[6,9],[-10,7]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-10,1],[-9,-5]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-10,9],[7,9],[-2,-1],[6,9],[-7,5],[-9,4]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[1,8],[-8,-4],[-8,-6],[-10,2],[-3,-2],[-5,0],[-4,8],[-2,3],[-2,10]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-5,4],[-2,1],[1,3],[-10,-10],[-9,6],[-10,-5],[-4,-2]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-10,-9],[-9,-7],[-7,2]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-6,-3],[-6,7],[-4,3],[-3,8],[-4,5],[2,3],[5,10]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-6,8],[-6,-3],[6,8],[0,7],[-3,-2],[-7,9],[-5,7]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-5,9],[-4,8],[-5,3],[-3,1],[3,8]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-9,-7],[-1,4],[1,3],[-9,-7],[-6,0],[1,6],[-2,2],[-1,4]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-10,-8],[5,8],[7,10],[-10,3],[-2,6],[-7,-3]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-3,9],[-8,-6],[3,10],[-2,8],[-8,3]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[0,8],[-2,-1],[-9,-8],[-8,0]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[-4,5],[-10,0],[-5,7],[-5,-3],[2,10],[-8,-2],[3,8]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[-5,5],\"intervals\":[[8,9],[-9,6],[1,2],[-7,5]]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[[0,2],[4,6],[9,10]]},{\"ok\":true,\"result\":[[0,5]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[0,5]]},{\"ok\":true,\"result\":[[0,2],[2,5]]},{\"ok\":true,\"result\":[]}],\"requests\":[{\"input\":{\"bounds\":[0,10],\"intervals\":[[2,4],[6,9]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[0,5],\"intervals\":[]},\"op\":\"solve\"},{\"input\":{\"bounds\":[0,5],\"intervals\":[[-3,8]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[0,5],\"intervals\":[[8,9],[-3,-1]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[0,5],\"intervals\":[[2,2]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[2,2],\"intervals\":[]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[0,2],[4,6],[9,10]]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"bounds\":[0,10],\"intervals\":[[2,4],[6,9]]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[0,2],[4,6],[9,10]]}],\"requests\":[{\"input\":{\"bounds\":[0,10]},\"op\":\"solve\"},{\"input\":{\"intervals\":[[2,4],[6,9]]},\"op\":\"solve\"},{\"input\":{\"bounds\":[0,10],\"ignored_extra\":{\"nested\":true},\"intervals\":[[2,4],[6,9]]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/36155703\",\"revision\":1}},{\"ok\":true,\"result\":[[0,2],[4,6],[9,10]]},{\"ok\":true,\"result\":{\"key\":\"doc/36155703\",\"revision\":1,\"value\":{\"bounds\":[0,10],\"intervals\":[[2,4],[6,9]]}}},{\"ok\":true,\"result\":{\"key\":\"doc/36155703\",\"revision\":2}},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"doc/6239563\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/36155703\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/6239563\",\"revision\":3,\"value\":{\"bounds\":[0,10],\"intervals\":[[2,4],[6,9]]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/36155703\",\"op\":\"get\"},{\"key\":\"doc/36155703\",\"op\":\"put\",\"value\":{\"bounds\":[0,10],\"intervals\":[[2,4],[6,9]]}},{\"key\":\"doc/36155703\",\"op\":\"evaluate\"},{\"key\":\"doc/36155703\",\"op\":\"get\"},{\"key\":\"doc/36155703\",\"op\":\"put\",\"value\":{\"bounds\":[2,2],\"intervals\":[]}},{\"key\":\"doc/36155703\",\"op\":\"evaluate\"},{\"key\":\"doc/6239563\",\"op\":\"put\",\"value\":{\"bounds\":[0,10],\"intervals\":[[2,4],[6,9]]}},{\"key\":\"doc/36155703\",\"op\":\"delete\"},{\"key\":\"doc/36155703\",\"op\":\"get\"},{\"key\":\"doc/36155703\",\"op\":\"delete\"},{\"key\":\"doc/6239563\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/8649427\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/6239563\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/36155703\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/36155703\",\"doc/6239563\",\"other/8649427\"]},{\"ok\":true,\"result\":[\"doc/36155703\",\"doc/6239563\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/8649427\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/6239563\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/8649427\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/8649427\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/6239563\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/36155703\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/8649427\",\"op\":\"get\"},{\"key\":\"other/8649427\",\"op\":\"evaluate\"},{\"key\":\"doc/36155703\",\"op\":\"evaluate\"},{\"key\":\"doc/6239563\",\"op\":\"get\"},{\"key\":\"other/8649427\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/36155703\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"intervals","entrypoint":"main.py","family":"interval_gaps","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Interval Gaps — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: intervals ([a,b] with a<=b), bounds [low,high] with low<=high. Return positive-length gaps in [low,high] after unioning and clipping occupied intervals. Touching endpoints do not make gaps. Sorted ascending; no zero-length results.\nRequired input fields: intervals, bounds.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"intervals\": [\n [\n 2,\n 4\n ],\n [\n 6,\n 9\n ]\n ],\n \"bounds\": [\n 0,\n 10\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 0,\n 2\n ],\n [\n 4,\n 6\n ],\n [\n 9,\n 10\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"intervals\": [],\n \"bounds\": [\n 0,\n 5\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 0,\n 5\n ]\n ]\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"bounds\":[0,10],\"intervals\":[[2,4],[6,9]]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[0,2],[4,6],[9,10]]}},{\"request\":{\"input\":{\"bounds\":[0,5],\"intervals\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[0,5]]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-022-interval-gaps","timeout_seconds":10,"title":"Interval Gaps — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"at\":-6,\"peak\":3}},{\"ok\":true,\"result\":{\"at\":-5,\"peak\":3}},{\"ok\":true,\"result\":{\"at\":-9,\"peak\":1}},{\"ok\":true,\"result\":{\"at\":-2,\"peak\":3}},{\"ok\":true,\"result\":{\"at\":-7,\"peak\":3}},{\"ok\":true,\"result\":{\"at\":-7,\"peak\":2}},{\"ok\":true,\"result\":{\"at\":-6,\"peak\":4}},{\"ok\":true,\"result\":{\"at\":-5,\"peak\":1}},{\"ok\":true,\"result\":{\"at\":-1,\"peak\":4}},{\"ok\":true,\"result\":{\"at\":-5,\"peak\":1}},{\"ok\":true,\"result\":{\"at\":-4,\"peak\":7}},{\"ok\":true,\"result\":{\"at\":4,\"peak\":3}},{\"ok\":true,\"result\":{\"at\":-6,\"peak\":4}},{\"ok\":true,\"result\":{\"at\":4,\"peak\":4}},{\"ok\":true,\"result\":{\"at\":-4,\"peak\":3}},{\"ok\":true,\"result\":{\"at\":null,\"peak\":0}},{\"ok\":true,\"result\":{\"at\":1,\"peak\":2}},{\"ok\":true,\"result\":{\"at\":3,\"peak\":3}},{\"ok\":true,\"result\":{\"at\":-10,\"peak\":1}},{\"ok\":true,\"result\":{\"at\":null,\"peak\":0}},{\"ok\":true,\"result\":{\"at\":-3,\"peak\":2}},{\"ok\":true,\"result\":{\"at\":null,\"peak\":0}},{\"ok\":true,\"result\":{\"at\":2,\"peak\":7}},{\"ok\":true,\"result\":{\"at\":-6,\"peak\":4}}],\"requests\":[{\"input\":{\"bookings\":[[-9,-1],[2,10],[-9,10],[-6,2],[3,4]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-5,5],[8,9],[-10,2],[6,10],[-5,-3]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-9,7]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-8,0],[4,7],[-6,9],[-2,8]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-7,-6],[3,4],[3,9],[-4,4],[1,1],[-7,-4],[-7,-3]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[3,8],[2,8],[-10,2],[-7,-5]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-10,7],[-6,1],[-8,-1],[-8,1]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-5,1]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-7,9],[-1,10],[-3,2],[1,5],[-6,1]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[5,9],[-7,-7],[-5,-1]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-8,3],[-7,-3],[-4,-3],[-6,-1],[2,5],[-4,5],[-4,-1],[-4,10],[-3,-3]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-1,-1],[4,9],[2,7],[1,10],[-4,-1]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-7,-3],[1,9],[-6,3],[10,10],[-7,0],[-6,3],[-3,3],[-9,-7]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-7,0],[-10,6],[4,7],[4,8],[-6,7]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-4,9],[1,7],[-9,-7],[-9,2],[-4,-2]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-2,-1],[-7,-6],[1,5],[0,10]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[3,7],[-2,7],[2,7]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-10,6]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-9,-1],[-3,6]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[4,4]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[1,5],[2,5],[-5,9],[-1,-1],[-3,5],[1,5],[1,1],[-10,3],[-6,9]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-7,-1],[2,8],[-6,8],[-9,0],[3,10],[-1,0],[-10,9]]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"at\":2,\"peak\":2}},{\"ok\":true,\"result\":{\"at\":null,\"peak\":0}},{\"ok\":true,\"result\":{\"at\":null,\"peak\":0}},{\"ok\":true,\"result\":{\"at\":0,\"peak\":1}},{\"ok\":true,\"result\":{\"at\":-2,\"peak\":2}}],\"requests\":[{\"input\":{\"bookings\":[[1,4],[2,3],[3,5]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[1,1]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[0,1],[1,2]]},\"op\":\"solve\"},{\"input\":{\"bookings\":[[-2,2],[-2,2]]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"at\":2,\"peak\":2}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"bookings\":[[1,4],[2,3],[3,5]]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"at\":2,\"peak\":2}}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"bookings\":[[1,4],[2,3],[3,5]],\"ignored_extra\":{\"nested\":true}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/62703368\",\"revision\":1}},{\"ok\":true,\"result\":{\"at\":2,\"peak\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/62703368\",\"revision\":1,\"value\":{\"bookings\":[[1,4],[2,3],[3,5]]}}},{\"ok\":true,\"result\":{\"key\":\"doc/62703368\",\"revision\":2}},{\"ok\":true,\"result\":{\"at\":-2,\"peak\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/6895771\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/62703368\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/6895771\",\"revision\":3,\"value\":{\"bookings\":[[1,4],[2,3],[3,5]]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/62703368\",\"op\":\"get\"},{\"key\":\"doc/62703368\",\"op\":\"put\",\"value\":{\"bookings\":[[1,4],[2,3],[3,5]]}},{\"key\":\"doc/62703368\",\"op\":\"evaluate\"},{\"key\":\"doc/62703368\",\"op\":\"get\"},{\"key\":\"doc/62703368\",\"op\":\"put\",\"value\":{\"bookings\":[[-2,2],[-2,2]]}},{\"key\":\"doc/62703368\",\"op\":\"evaluate\"},{\"key\":\"doc/6895771\",\"op\":\"put\",\"value\":{\"bookings\":[[1,4],[2,3],[3,5]]}},{\"key\":\"doc/62703368\",\"op\":\"delete\"},{\"key\":\"doc/62703368\",\"op\":\"get\"},{\"key\":\"doc/62703368\",\"op\":\"delete\"},{\"key\":\"doc/6895771\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/41956235\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/6895771\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/62703368\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/62703368\",\"doc/6895771\",\"other/41956235\"]},{\"ok\":true,\"result\":[\"doc/62703368\",\"doc/6895771\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/41956235\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/6895771\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/41956235\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/41956235\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/6895771\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/62703368\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/41956235\",\"op\":\"get\"},{\"key\":\"other/41956235\",\"op\":\"evaluate\"},{\"key\":\"doc/62703368\",\"op\":\"evaluate\"},{\"key\":\"doc/6895771\",\"op\":\"get\"},{\"key\":\"other/41956235\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/62703368\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"intervals","entrypoint":"main.py","family":"booking_peak","language":"python","num_assertions":82,"num_scenarios":8,"prompt":"# Booking Peak — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: bookings ([start,end] integer pairs, start<=end). Intervals are half-open; zero-length bookings ignored. Return {peak,at} for maximum simultaneous active bookings and earliest timestamp attaining that maximum. Empty effective input: {peak:0,at:null}. Endings at t happen before starts at t.\nRequired input fields: bookings.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"bookings\": [\n [\n 1,\n 4\n ],\n [\n 2,\n 3\n ],\n [\n 3,\n 5\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"peak\": 2,\n \"at\": 2\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"bookings\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"peak\": 0,\n \"at\": null\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"bookings\":[[1,4],[2,3],[3,5]]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"at\":2,\"peak\":2}}},{\"request\":{\"input\":{\"bookings\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"at\":null,\"peak\":0}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-023-booking-peak","timeout_seconds":10,"title":"Booking Peak — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[\"2018-12-03\",\"2018-12-04\",\"2018-12-06\",\"2018-12-07\",\"2018-12-11\",\"2018-12-12\"]},{\"ok\":true,\"result\":[\"2006-09-18\",\"2006-09-19\",\"2006-09-20\",\"2006-09-21\",\"2006-09-22\",\"2006-09-25\",\"2006-09-26\",\"2006-09-27\",\"2006-09-28\",\"2006-09-29\",\"2006-10-02\",\"2006-10-03\",\"2006-10-04\",\"2006-10-05\"]},{\"ok\":true,\"result\":[\"2001-01-01\"]},{\"ok\":true,\"result\":[\"2010-09-21\",\"2010-09-22\",\"2010-09-23\",\"2010-09-24\"]},{\"ok\":true,\"result\":[\"2021-10-04\",\"2021-10-06\",\"2021-10-07\",\"2021-10-08\",\"2021-10-11\",\"2021-10-12\",\"2021-10-14\",\"2021-10-18\",\"2021-10-19\",\"2021-10-20\",\"2021-10-21\",\"2021-10-22\"]},{\"ok\":true,\"result\":[\"2017-01-30\",\"2017-01-31\",\"2017-02-01\",\"2017-02-03\",\"2017-02-06\"]},{\"ok\":true,\"result\":[\"2014-01-24\",\"2014-01-27\",\"2014-01-28\",\"2014-01-29\",\"2014-01-30\",\"2014-02-03\",\"2014-02-04\",\"2014-02-05\",\"2014-02-06\",\"2014-02-07\",\"2014-02-10\",\"2014-02-11\",\"2014-02-13\",\"2014-02-14\",\"2014-02-17\"]},{\"ok\":true,\"result\":[\"2000-11-02\",\"2000-11-03\",\"2000-11-06\",\"2000-11-08\",\"2000-11-10\",\"2000-11-13\",\"2000-11-14\",\"2000-11-15\",\"2000-11-16\",\"2000-11-17\",\"2000-11-20\",\"2000-11-21\",\"2000-11-22\",\"2000-11-23\",\"2000-11-24\"]},{\"ok\":true,\"result\":[\"2002-11-14\",\"2002-11-15\",\"2002-11-19\",\"2002-11-20\",\"2002-11-21\",\"2002-11-22\",\"2002-11-25\",\"2002-11-27\",\"2002-11-28\",\"2002-11-29\",\"2002-12-02\",\"2002-12-04\",\"2002-12-05\"]},{\"ok\":true,\"result\":[\"2017-08-03\",\"2017-08-04\"]},{\"ok\":true,\"result\":[\"2009-07-27\",\"2009-07-28\",\"2009-07-29\",\"2009-07-30\",\"2009-07-31\",\"2009-08-03\",\"2009-08-05\"]},{\"ok\":true,\"result\":[\"2004-12-21\",\"2004-12-22\"]},{\"ok\":true,\"result\":[\"2010-03-31\",\"2010-04-01\",\"2010-04-02\",\"2010-04-05\",\"2010-04-06\",\"2010-04-07\",\"2010-04-08\",\"2010-04-09\",\"2010-04-12\",\"2010-04-13\",\"2010-04-14\"]},{\"ok\":true,\"result\":[\"2009-04-13\",\"2009-04-14\",\"2009-04-16\",\"2009-04-17\",\"2009-04-20\",\"2009-04-21\",\"2009-04-22\",\"2009-04-23\",\"2009-04-24\",\"2009-04-27\",\"2009-04-28\",\"2009-04-29\",\"2009-05-01\"]},{\"ok\":true,\"result\":[\"2019-11-19\",\"2019-11-20\",\"2019-11-22\",\"2019-11-25\",\"2019-11-26\",\"2019-11-27\",\"2019-11-28\",\"2019-11-29\",\"2019-12-02\"]},{\"ok\":true,\"result\":[\"2011-04-04\",\"2011-04-06\",\"2011-04-07\",\"2011-04-08\",\"2011-04-12\",\"2011-04-13\",\"2011-04-14\",\"2011-04-15\",\"2011-04-18\",\"2011-04-19\",\"2011-04-20\",\"2011-04-21\",\"2011-04-22\",\"2011-04-25\",\"2011-04-26\",\"2011-04-27\",\"2011-04-28\"]},{\"ok\":true,\"result\":[\"2013-01-07\",\"2013-01-08\",\"2013-01-09\",\"2013-01-10\",\"2013-01-11\",\"2013-01-14\",\"2013-01-16\",\"2013-01-17\",\"2013-01-18\",\"2013-01-21\"]},{\"ok\":true,\"result\":[\"2018-03-15\",\"2018-03-16\",\"2018-03-19\",\"2018-03-21\",\"2018-03-22\",\"2018-03-23\",\"2018-03-26\",\"2018-03-27\",\"2018-03-28\",\"2018-03-29\"]},{\"ok\":true,\"result\":[\"2024-07-10\",\"2024-07-11\",\"2024-07-12\",\"2024-07-15\",\"2024-07-16\",\"2024-07-17\",\"2024-07-18\",\"2024-07-19\",\"2024-07-22\",\"2024-07-23\",\"2024-07-24\",\"2024-07-26\"]},{\"ok\":true,\"result\":[\"2003-11-24\",\"2003-11-26\",\"2003-11-27\",\"2003-11-28\",\"2003-12-01\",\"2003-12-02\",\"2003-12-03\",\"2003-12-04\",\"2003-12-05\",\"2003-12-08\",\"2003-12-09\",\"2003-12-10\",\"2003-12-12\",\"2003-12-15\",\"2003-12-17\",\"2003-12-18\"]},{\"ok\":true,\"result\":[\"2020-08-18\",\"2020-08-19\",\"2020-08-20\",\"2020-08-21\",\"2020-08-24\",\"2020-08-25\",\"2020-08-26\",\"2020-08-28\",\"2020-08-31\",\"2020-09-01\",\"2020-09-02\",\"2020-09-03\"]},{\"ok\":true,\"result\":[\"2009-03-19\",\"2009-03-20\",\"2009-03-23\",\"2009-03-24\",\"2009-03-25\",\"2009-03-26\",\"2009-03-27\",\"2009-03-30\",\"2009-03-31\",\"2009-04-01\",\"2009-04-03\",\"2009-04-06\",\"2009-04-07\",\"2009-04-08\",\"2009-04-09\",\"2009-04-13\",\"2009-04-14\"]},{\"ok\":true,\"result\":[\"2003-02-25\",\"2003-02-26\",\"2003-02-28\",\"2003-03-03\",\"2003-03-05\",\"2003-03-06\",\"2003-03-07\",\"2003-03-10\",\"2003-03-11\",\"2003-03-12\",\"2003-03-13\",\"2003-03-14\",\"2003-03-17\",\"2003-03-18\"]},{\"ok\":true,\"result\":[\"2021-01-13\",\"2021-01-14\",\"2021-01-15\",\"2021-01-18\",\"2021-01-19\",\"2021-01-20\",\"2021-01-21\",\"2021-01-22\",\"2021-01-25\",\"2021-01-27\",\"2021-01-28\",\"2021-01-29\",\"2021-02-01\"]}],\"requests\":[{\"input\":{\"end\":\"2018-12-13\",\"holidays\":[\"2018-12-30\",\"2018-12-10\",\"2018-12-21\",\"2018-12-05\",\"2018-12-28\"],\"start\":\"2018-12-01\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2006-10-09\",\"holidays\":[\"2006-10-10\",\"2006-09-30\",\"2006-09-30\",\"2006-10-06\",\"2006-10-13\"],\"start\":\"2006-09-18\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2001-01-02\",\"holidays\":[\"2001-01-23\",\"2000-12-31\",\"2001-01-23\",\"2000-12-31\",\"2001-01-04\"],\"start\":\"2000-12-30\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2010-09-26\",\"holidays\":[\"2010-09-20\",\"2010-10-03\",\"2010-10-05\",\"2010-10-15\",\"2010-10-06\"],\"start\":\"2010-09-19\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2021-10-25\",\"holidays\":[\"2021-10-05\",\"2021-10-13\",\"2021-10-15\",\"2021-10-09\",\"2021-10-24\"],\"start\":\"2021-10-04\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2017-02-07\",\"holidays\":[\"2017-02-17\",\"2017-02-02\",\"2017-01-28\",\"2017-02-20\",\"2017-02-24\"],\"start\":\"2017-01-28\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2014-02-18\",\"holidays\":[\"2014-01-31\",\"2014-01-25\",\"2014-01-23\",\"2014-02-12\",\"2014-02-21\"],\"start\":\"2014-01-23\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2000-11-27\",\"holidays\":[\"2000-11-27\",\"2000-11-07\",\"2000-11-11\",\"2000-11-09\",\"2000-11-18\"],\"start\":\"2000-11-02\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2002-12-06\",\"holidays\":[\"2002-11-26\",\"2002-12-12\",\"2002-12-03\",\"2002-12-11\",\"2002-11-18\"],\"start\":\"2002-11-14\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2017-08-07\",\"holidays\":[\"2017-08-05\",\"2017-08-17\",\"2017-08-07\",\"2017-08-18\",\"2017-08-20\"],\"start\":\"2017-08-03\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2009-08-06\",\"holidays\":[\"2009-08-24\",\"2009-08-10\",\"2009-08-04\",\"2009-08-11\",\"2009-08-15\"],\"start\":\"2009-07-27\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2004-12-23\",\"holidays\":[\"2004-12-28\",\"2005-01-07\",\"2004-12-26\",\"2004-12-24\",\"2005-01-19\"],\"start\":\"2004-12-21\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2010-04-15\",\"holidays\":[\"2010-04-11\",\"2010-04-20\",\"2010-04-10\",\"2010-04-18\",\"2010-04-11\"],\"start\":\"2010-03-31\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2009-05-04\",\"holidays\":[\"2009-04-30\",\"2009-05-05\",\"2009-04-26\",\"2009-04-15\",\"2009-05-11\"],\"start\":\"2009-04-13\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2019-12-03\",\"holidays\":[\"2019-12-06\",\"2019-11-30\",\"2019-12-16\",\"2019-11-21\",\"2019-11-18\"],\"start\":\"2019-11-17\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2011-04-29\",\"holidays\":[\"2011-04-11\",\"2011-04-17\",\"2011-04-23\",\"2011-04-05\",\"2011-04-30\"],\"start\":\"2011-04-03\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2013-01-22\",\"holidays\":[\"2013-01-13\",\"2013-01-19\",\"2013-01-15\",\"2013-01-04\",\"2013-01-03\"],\"start\":\"2013-01-03\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2018-03-30\",\"holidays\":[\"2018-04-05\",\"2018-04-07\",\"2018-04-07\",\"2018-03-20\",\"2018-04-08\"],\"start\":\"2018-03-15\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2024-07-27\",\"holidays\":[\"2024-08-08\",\"2024-07-25\",\"2024-07-25\",\"2024-08-07\",\"2024-07-28\"],\"start\":\"2024-07-10\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2003-12-19\",\"holidays\":[\"2003-12-14\",\"2003-12-20\",\"2003-12-11\",\"2003-12-16\",\"2003-11-25\"],\"start\":\"2003-11-22\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2020-09-06\",\"holidays\":[\"2020-08-27\",\"2020-09-06\",\"2020-09-09\",\"2020-09-04\",\"2020-08-29\"],\"start\":\"2020-08-18\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2009-04-15\",\"holidays\":[\"2009-03-29\",\"2009-04-15\",\"2009-04-10\",\"2009-03-28\",\"2009-04-02\"],\"start\":\"2009-03-19\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2003-03-20\",\"holidays\":[\"2003-03-04\",\"2003-03-19\",\"2003-02-27\",\"2003-03-04\",\"2003-03-25\"],\"start\":\"2003-02-25\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2021-02-02\",\"holidays\":[\"2021-01-30\",\"2021-01-31\",\"2021-01-26\",\"2021-02-05\",\"2021-01-24\"],\"start\":\"2021-01-13\"},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[\"2024-02-28\",\"2024-03-01\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[\"2024-12-30\",\"2024-12-31\",\"2025-01-02\"]},{\"ok\":true,\"result\":[\"2000-02-28\",\"2000-02-29\",\"2000-03-01\"]}],\"requests\":[{\"input\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2024-01-01\",\"holidays\":[],\"start\":\"2024-01-01\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2024-01-08\",\"holidays\":[],\"start\":\"2024-01-06\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2025-01-03\",\"holidays\":[\"2025-01-01\",\"2025-01-01\"],\"start\":\"2024-12-30\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2000-03-02\",\"holidays\":[],\"start\":\"2000-02-28\"},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"2024-02-28\",\"2024-03-01\"]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"2024-02-28\",\"2024-03-01\"]}],\"requests\":[{\"input\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"]},\"op\":\"solve\"},{\"input\":{\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2024-03-04\",\"start\":\"2024-02-28\"},\"op\":\"solve\"},{\"input\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"ignored_extra\":{\"nested\":true},\"start\":\"2024-02-28\"},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/15867126\",\"revision\":1}},{\"ok\":true,\"result\":[\"2024-02-28\",\"2024-03-01\"]},{\"ok\":true,\"result\":{\"key\":\"doc/15867126\",\"revision\":1,\"value\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"}}},{\"ok\":true,\"result\":{\"key\":\"doc/15867126\",\"revision\":2}},{\"ok\":true,\"result\":[\"2000-02-28\",\"2000-02-29\",\"2000-03-01\"]},{\"ok\":true,\"result\":{\"key\":\"doc/67879823\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/15867126\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/67879823\",\"revision\":3,\"value\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/15867126\",\"op\":\"get\"},{\"key\":\"doc/15867126\",\"op\":\"put\",\"value\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"}},{\"key\":\"doc/15867126\",\"op\":\"evaluate\"},{\"key\":\"doc/15867126\",\"op\":\"get\"},{\"key\":\"doc/15867126\",\"op\":\"put\",\"value\":{\"end\":\"2000-03-02\",\"holidays\":[],\"start\":\"2000-02-28\"}},{\"key\":\"doc/15867126\",\"op\":\"evaluate\"},{\"key\":\"doc/67879823\",\"op\":\"put\",\"value\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"}},{\"key\":\"doc/15867126\",\"op\":\"delete\"},{\"key\":\"doc/15867126\",\"op\":\"get\"},{\"key\":\"doc/15867126\",\"op\":\"delete\"},{\"key\":\"doc/67879823\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/14679749\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/67879823\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/15867126\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/15867126\",\"doc/67879823\",\"other/14679749\"]},{\"ok\":true,\"result\":[\"doc/15867126\",\"doc/67879823\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/14679749\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/67879823\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/14679749\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/14679749\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/67879823\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/15867126\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/14679749\",\"op\":\"get\"},{\"key\":\"other/14679749\",\"op\":\"evaluate\"},{\"key\":\"doc/15867126\",\"op\":\"evaluate\"},{\"key\":\"doc/67879823\",\"op\":\"get\"},{\"key\":\"other/14679749\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/15867126\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"calendar","entrypoint":"main.py","family":"business_days","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Business Days — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: start,end ISO dates (start<=end) and holidays (ISO dates). Return all Monday-Friday dates in [start,end) excluding holidays, ascending. Duplicate holidays have no additional effect. Dates are valid in years 1900..2100, range <=400 days.\nRequired input fields: start, end, holidays.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"start\": \"2024-02-28\",\n \"end\": \"2024-03-04\",\n \"holidays\": [\n \"2024-02-29\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"2024-02-28\",\n \"2024-03-01\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"start\": \"2024-01-01\",\n \"end\": \"2024-01-01\",\n \"holidays\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"end\":\"2024-03-04\",\"holidays\":[\"2024-02-29\"],\"start\":\"2024-02-28\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[\"2024-02-28\",\"2024-03-01\"]}},{\"request\":{\"input\":{\"end\":\"2024-01-01\",\"holidays\":[],\"start\":\"2024-01-01\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-024-business-days","timeout_seconds":10,"title":"Business Days — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[[0,0,1,2,3,4,5],[6,7,8,9,10,11,12],[13,14,15,16,17,18,19],[20,21,22,23,24,25,26],[27,28,29,30,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,0,1],[2,3,4,5,6,7,8],[9,10,11,12,13,14,15],[16,17,18,19,20,21,22],[23,24,25,26,27,28,29],[30,31,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,1,2,3],[4,5,6,7,8,9,10],[11,12,13,14,15,16,17],[18,19,20,21,22,23,24],[25,26,27,28,29,30,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,0,1],[2,3,4,5,6,7,8],[9,10,11,12,13,14,15],[16,17,18,19,20,21,22],[23,24,25,26,27,28,29],[30,31,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,29,30,31,0]]},{\"ok\":true,\"result\":[[1,2,3,4,5,6,7],[8,9,10,11,12,13,14],[15,16,17,18,19,20,21],[22,23,24,25,26,27,28],[29,30,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,1,2],[3,4,5,6,7,8,9],[10,11,12,13,14,15,16],[17,18,19,20,21,22,23],[24,25,26,27,28,29,30],[31,0,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,0,1],[2,3,4,5,6,7,8],[9,10,11,12,13,14,15],[16,17,18,19,20,21,22],[23,24,25,26,27,28,29],[30,0,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,1,2,3,4,5,6],[7,8,9,10,11,12,13],[14,15,16,17,18,19,20],[21,22,23,24,25,26,27],[28,29,30,31,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,0,1],[2,3,4,5,6,7,8],[9,10,11,12,13,14,15],[16,17,18,19,20,21,22],[23,24,25,26,27,28,29],[30,31,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,0,1],[2,3,4,5,6,7,8],[9,10,11,12,13,14,15],[16,17,18,19,20,21,22],[23,24,25,26,27,28,29],[30,31,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,29,30,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,1,2,3],[4,5,6,7,8,9,10],[11,12,13,14,15,16,17],[18,19,20,21,22,23,24],[25,26,27,28,29,30,31]]},{\"ok\":true,\"result\":[[0,0,0,0,0,1,2],[3,4,5,6,7,8,9],[10,11,12,13,14,15,16],[17,18,19,20,21,22,23],[24,25,26,27,28,29,30],[31,0,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,1,2,3],[4,5,6,7,8,9,10],[11,12,13,14,15,16,17],[18,19,20,21,22,23,24],[25,26,27,28,29,30,31]]},{\"ok\":true,\"result\":[[1,2,3,4,5,6,7],[8,9,10,11,12,13,14],[15,16,17,18,19,20,21],[22,23,24,25,26,27,28],[29,30,31,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,29,30,31,0]]},{\"ok\":true,\"result\":[[0,1,2,3,4,5,6],[7,8,9,10,11,12,13],[14,15,16,17,18,19,20],[21,22,23,24,25,26,27],[28,29,30,31,0,0,0]]},{\"ok\":true,\"result\":[[0,1,2,3,4,5,6],[7,8,9,10,11,12,13],[14,15,16,17,18,19,20],[21,22,23,24,25,26,27],[28,29,30,31,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,29,30,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,1,2],[3,4,5,6,7,8,9],[10,11,12,13,14,15,16],[17,18,19,20,21,22,23],[24,25,26,27,28,29,30]]},{\"ok\":true,\"result\":[[0,0,1,2,3,4,5],[6,7,8,9,10,11,12],[13,14,15,16,17,18,19],[20,21,22,23,24,25,26],[27,28,29,30,0,0,0]]},{\"ok\":true,\"result\":[[0,0,1,2,3,4,5],[6,7,8,9,10,11,12],[13,14,15,16,17,18,19],[20,21,22,23,24,25,26],[27,28,29,30,0,0,0]]}],\"requests\":[{\"input\":{\"month\":4,\"year\":1931},\"op\":\"solve\"},{\"input\":{\"month\":12,\"year\":1929},\"op\":\"solve\"},{\"input\":{\"month\":9,\"year\":2090},\"op\":\"solve\"},{\"input\":{\"month\":7,\"year\":1917},\"op\":\"solve\"},{\"input\":{\"month\":7,\"year\":1993},\"op\":\"solve\"},{\"input\":{\"month\":9,\"year\":2053},\"op\":\"solve\"},{\"input\":{\"month\":8,\"year\":2093},\"op\":\"solve\"},{\"input\":{\"month\":9,\"year\":1929},\"op\":\"solve\"},{\"input\":{\"month\":7,\"year\":1958},\"op\":\"solve\"},{\"input\":{\"month\":12,\"year\":2041},\"op\":\"solve\"},{\"input\":{\"month\":8,\"year\":1999},\"op\":\"solve\"},{\"input\":{\"month\":4,\"year\":2055},\"op\":\"solve\"},{\"input\":{\"month\":3,\"year\":2024},\"op\":\"solve\"},{\"input\":{\"month\":8,\"year\":2048},\"op\":\"solve\"},{\"input\":{\"month\":7,\"year\":1938},\"op\":\"solve\"},{\"input\":{\"month\":1,\"year\":2063},\"op\":\"solve\"},{\"input\":{\"month\":10,\"year\":2076},\"op\":\"solve\"},{\"input\":{\"month\":12,\"year\":1981},\"op\":\"solve\"},{\"input\":{\"month\":10,\"year\":2002},\"op\":\"solve\"},{\"input\":{\"month\":2,\"year\":2057},\"op\":\"solve\"},{\"input\":{\"month\":11,\"year\":2001},\"op\":\"solve\"},{\"input\":{\"month\":9,\"year\":2074},\"op\":\"solve\"},{\"input\":{\"month\":6,\"year\":2022},\"op\":\"solve\"},{\"input\":{\"month\":6,\"year\":1938},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[[1,2,3,4,5,6,7],[8,9,10,11,12,13,14],[15,16,17,18,19,20,21],[22,23,24,25,26,27,28]]},{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,29,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,0,0,1],[2,3,4,5,6,7,8],[9,10,11,12,13,14,15],[16,17,18,19,20,21,22],[23,24,25,26,27,28,29],[30,31,0,0,0,0,0]]},{\"ok\":true,\"result\":[[0,0,0,0,1,2,3],[4,5,6,7,8,9,10],[11,12,13,14,15,16,17],[18,19,20,21,22,23,24],[25,26,27,28,29,30,31]]}],\"requests\":[{\"input\":{\"month\":2,\"year\":2021},\"op\":\"solve\"},{\"input\":{\"month\":2,\"year\":2024},\"op\":\"solve\"},{\"input\":{\"month\":2,\"year\":1900},\"op\":\"solve\"},{\"input\":{\"month\":1,\"year\":2023},\"op\":\"solve\"},{\"input\":{\"month\":12,\"year\":2000},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[1,2,3,4,5,6,7],[8,9,10,11,12,13,14],[15,16,17,18,19,20,21],[22,23,24,25,26,27,28]]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"month\":2,\"year\":2021},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[1,2,3,4,5,6,7],[8,9,10,11,12,13,14],[15,16,17,18,19,20,21],[22,23,24,25,26,27,28]]}],\"requests\":[{\"input\":{\"month\":2},\"op\":\"solve\"},{\"input\":{\"year\":2021},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"month\":2,\"year\":2021},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/60533454\",\"revision\":1}},{\"ok\":true,\"result\":[[1,2,3,4,5,6,7],[8,9,10,11,12,13,14],[15,16,17,18,19,20,21],[22,23,24,25,26,27,28]]},{\"ok\":true,\"result\":{\"key\":\"doc/60533454\",\"revision\":1,\"value\":{\"month\":2,\"year\":2021}}},{\"ok\":true,\"result\":{\"key\":\"doc/60533454\",\"revision\":2}},{\"ok\":true,\"result\":[[0,0,0,0,1,2,3],[4,5,6,7,8,9,10],[11,12,13,14,15,16,17],[18,19,20,21,22,23,24],[25,26,27,28,29,30,31]]},{\"ok\":true,\"result\":{\"key\":\"doc/82201165\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/60533454\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/82201165\",\"revision\":3,\"value\":{\"month\":2,\"year\":2021}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/60533454\",\"op\":\"get\"},{\"key\":\"doc/60533454\",\"op\":\"put\",\"value\":{\"month\":2,\"year\":2021}},{\"key\":\"doc/60533454\",\"op\":\"evaluate\"},{\"key\":\"doc/60533454\",\"op\":\"get\"},{\"key\":\"doc/60533454\",\"op\":\"put\",\"value\":{\"month\":12,\"year\":2000}},{\"key\":\"doc/60533454\",\"op\":\"evaluate\"},{\"key\":\"doc/82201165\",\"op\":\"put\",\"value\":{\"month\":2,\"year\":2021}},{\"key\":\"doc/60533454\",\"op\":\"delete\"},{\"key\":\"doc/60533454\",\"op\":\"get\"},{\"key\":\"doc/60533454\",\"op\":\"delete\"},{\"key\":\"doc/82201165\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/66939701\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/82201165\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/60533454\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/60533454\",\"doc/82201165\",\"other/66939701\"]},{\"ok\":true,\"result\":[\"doc/60533454\",\"doc/82201165\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/66939701\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/82201165\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/66939701\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/66939701\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/82201165\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/60533454\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/66939701\",\"op\":\"get\"},{\"key\":\"other/66939701\",\"op\":\"evaluate\"},{\"key\":\"doc/60533454\",\"op\":\"evaluate\"},{\"key\":\"doc/82201165\",\"op\":\"get\"},{\"key\":\"other/66939701\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/60533454\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"calendar","entrypoint":"main.py","family":"calendar_month","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Calendar Month — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: year (1900..2100), month (1..12). Return weeks as arrays of seven day numbers, Monday first. Use 0 for days outside the month; include only weeks intersecting this month.\nRequired input fields: year, month.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"year\": 2021,\n \"month\": 2\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 1,\n 2,\n 3,\n 4,\n 5,\n 6,\n 7\n ],\n [\n 8,\n 9,\n 10,\n 11,\n 12,\n 13,\n 14\n ],\n [\n 15,\n 16,\n 17,\n 18,\n 19,\n 20,\n 21\n ],\n [\n 22,\n 23,\n 24,\n 25,\n 26,\n 27,\n 28\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"year\": 2024,\n \"month\": 2\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 0,\n 0,\n 0,\n 1,\n 2,\n 3,\n 4\n ],\n [\n 5,\n 6,\n 7,\n 8,\n 9,\n 10,\n 11\n ],\n [\n 12,\n 13,\n 14,\n 15,\n 16,\n 17,\n 18\n ],\n [\n 19,\n 20,\n 21,\n 22,\n 23,\n 24,\n 25\n ],\n [\n 26,\n 27,\n 28,\n 29,\n 0,\n 0,\n 0\n ]\n ]\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"month\":2,\"year\":2021},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[1,2,3,4,5,6,7],[8,9,10,11,12,13,14],[15,16,17,18,19,20,21],[22,23,24,25,26,27,28]]}},{\"request\":{\"input\":{\"month\":2,\"year\":2024},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[0,0,0,1,2,3,4],[5,6,7,8,9,10,11],[12,13,14,15,16,17,18],[19,20,21,22,23,24,25],[26,27,28,29,0,0,0]]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-025-calendar-month","timeout_seconds":10,"title":"Calendar Month — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[1.4285714285714286,-0.14285714285714285,1.2857142857142858,0.8571428571428571]},{\"ok\":true,\"result\":[-1.1428571428571428]},{\"ok\":true,\"result\":[0.5,-0.3333333333333333,0.16666666666666666,1.3333333333333333,2.0]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[-5.666666666666667,-5.0,-2.0]},{\"ok\":true,\"result\":[-2.7142857142857144,-1.4285714285714286,0.5714285714285714]},{\"ok\":true,\"result\":[3.0]},{\"ok\":true,\"result\":[3.75,4.25,2.5,3.0,2.75,-0.25,1.0,-1.75]},{\"ok\":true,\"result\":[3.0,0.3333333333333333,0.6666666666666666]},{\"ok\":true,\"result\":[5.0,-2.0,-4.5,4.0,4.5,2.5]},{\"ok\":true,\"result\":[2.0,0.3333333333333333,-0.3333333333333333]},{\"ok\":true,\"result\":[-5.0,3.0]},{\"ok\":true,\"result\":[5.0,3.0,-2.5,0.5,8.5,6.5]},{\"ok\":true,\"result\":[-6.0,-0.5]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[-3.7142857142857144,-2.4285714285714284,-0.2857142857142857,1.5714285714285714]},{\"ok\":true,\"result\":[-1.0,-0.4,-0.8,-0.2,-1.6,-2.8,-0.2]},{\"ok\":true,\"result\":[3.5,-2.0,-2.0,-3.5]},{\"ok\":true,\"result\":[1.4,2.4,1.0,3.0,2.6]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[-5.0,-2.0,-9.0]}],\"requests\":[{\"input\":{\"values\":[9,-7,8,4,8,-8,-4,-2,3,5],\"window\":7},\"op\":\"solve\"},{\"input\":{\"values\":[8,4,-8,-3,-3,-6,0],\"window\":7},\"op\":\"solve\"},{\"input\":{\"values\":[6,-7,0,-1,-2,7,1,-4,7,3],\"window\":6},\"op\":\"solve\"},{\"input\":{\"values\":[-6],\"window\":3},\"op\":\"solve\"},{\"input\":{\"values\":[4,8,4],\"window\":6},\"op\":\"solve\"},{\"input\":{\"values\":[-7,-3,-7,-5,6],\"window\":3},\"op\":\"solve\"},{\"input\":{\"values\":[-8,-7,-8,-4,3,3,2,1,7],\"window\":7},\"op\":\"solve\"},{\"input\":{\"values\":[9,-6,8,2,2],\"window\":5},\"op\":\"solve\"},{\"input\":{\"values\":[5,8,7,-5,7,1,9,-6,-5,6,-2],\"window\":4},\"op\":\"solve\"},{\"input\":{\"values\":[5,0,4,-3,1],\"window\":3},\"op\":\"solve\"},{\"input\":{\"values\":[5,5,-9,0,8,1,4],\"window\":2},\"op\":\"solve\"},{\"input\":{\"values\":[2,2,2,-3,0],\"window\":3},\"op\":\"solve\"},{\"input\":{\"values\":[-5,3],\"window\":1},\"op\":\"solve\"},{\"input\":{\"values\":[7,3,3,-8,9,8,5],\"window\":2},\"op\":\"solve\"},{\"input\":{\"values\":[-7,-5,4],\"window\":2},\"op\":\"solve\"},{\"input\":{\"values\":[-5,-2],\"window\":6},\"op\":\"solve\"},{\"input\":{\"values\":[-1,-9,-7,0,2,-2,-9,8,6,6],\"window\":7},\"op\":\"solve\"},{\"input\":{\"values\":[-8,-7,3,9,-2,-5,-9,6,2,-8,8],\"window\":5},\"op\":\"solve\"},{\"input\":{\"values\":[8,-1,-3,-1,-6],\"window\":2},\"op\":\"solve\"},{\"input\":{\"values\":[-3,9,-1,-2,4,2,2,9,-4],\"window\":5},\"op\":\"solve\"},{\"input\":{\"values\":[1,-8,7],\"window\":6},\"op\":\"solve\"},{\"input\":{\"values\":[4],\"window\":4},\"op\":\"solve\"},{\"input\":{\"values\":[5],\"window\":3},\"op\":\"solve\"},{\"input\":{\"values\":[-5,-2,-9],\"window\":1},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[1.5,2.5,3.5]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[-2.0,0.0,2.0]},{\"ok\":true,\"result\":[1.5]},{\"ok\":true,\"result\":[0.15000000000000002,0.25]}],\"requests\":[{\"input\":{\"values\":[1,2,3,4],\"window\":2},\"op\":\"solve\"},{\"input\":{\"values\":[],\"window\":1},\"op\":\"solve\"},{\"input\":{\"values\":[1],\"window\":3},\"op\":\"solve\"},{\"input\":{\"values\":[-2,0,2],\"window\":1},\"op\":\"solve\"},{\"input\":{\"values\":[1,2],\"window\":2},\"op\":\"solve\"},{\"input\":{\"values\":[0.1,0.2,0.3],\"window\":2},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[1.5,2.5,3.5]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"values\":[1,2,3,4],\"window\":2},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[1.5,2.5,3.5]}],\"requests\":[{\"input\":{\"window\":2},\"op\":\"solve\"},{\"input\":{\"values\":[1,2,3,4]},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"values\":[1,2,3,4],\"window\":2},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecy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Moving Average — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: values (finite numbers), window (positive integer). Return arithmetic means for all contiguous full windows. Empty input or window>length gives [].\nRequired input fields: values, window.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"values\": [\n 1,\n 2,\n 3,\n 4\n ],\n \"window\": 2\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n 1.5,\n 2.5,\n 3.5\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"values\": [],\n \"window\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"values\":[1,2,3,4],\"window\":2},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[1.5,2.5,3.5]}},{\"request\":{\"input\":{\"values\":[],\"window\":1},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-026-moving-average","timeout_seconds":10,"title":"Moving Average — workspace service"} 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\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/41349969\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"numeric","entrypoint":"main.py","family":"statistics","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Statistics — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: values (finite numbers). Return {count,min,max,mean,median,variance}. Variance is population variance (divide by n); even-length median is mean of middle two. Empty values: count=0 and all other fields null.\nRequired input fields: values.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"values\": [\n 1,\n 2,\n 3,\n 4\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"count\": 4,\n \"min\": 1,\n \"max\": 4,\n \"mean\": 2.5,\n \"median\": 2.5,\n \"variance\": 1.25\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"values\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"count\": 0,\n \"min\": null,\n \"max\": null,\n \"mean\": null,\n \"median\": null,\n \"variance\": null\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"values\":[1,2,3,4]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"count\":4,\"max\":4,\"mean\":2.5,\"median\":2.5,\"min\":1,\"variance\":1.25}}},{\"request\":{\"input\":{\"values\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"count\":0,\"max\":null,\"mean\":null,\"median\":null,\"min\":null,\"variance\":null}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-027-statistics","timeout_seconds":10,"title":"Statistics — workspace service"} 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]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"numeric","entrypoint":"main.py","family":"histogram","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Histogram — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: finite numeric values and strictly increasing edges (>=2). Bins are [edge[i],edge[i+1]); values below first edge underflow, values >=last edge overflow. Return {counts,underflow,overflow}.\nRequired input fields: values, edges.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"values\": [\n -1,\n 0,\n 1,\n 2,\n 3\n ],\n \"edges\": [\n 0,\n 1,\n 3\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"counts\": [\n 1,\n 2\n ],\n \"underflow\": 1,\n \"overflow\": 1\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"values\": [],\n \"edges\": [\n 0,\n 1\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"counts\": [\n 0\n ],\n \"underflow\": 0,\n \"overflow\": 0\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"edges\":[0,1,3],\"values\":[-1,0,1,2,3]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"counts\":[1,2],\"overflow\":1,\"underflow\":1}}},{\"request\":{\"input\":{\"edges\":[0,1],\"values\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"counts\":[0],\"overflow\":0,\"underflow\":0}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-028-histogram","timeout_seconds":10,"title":"Histogram — workspace service"} 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Matrix Product — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: a (m by n), b (n by p), nonempty rectangular integer matrices of compatible dimensions, each dimension <=20. Return matrix product.\nRequired input fields: a, b.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": [\n [\n 1,\n 2\n ],\n [\n 3,\n 4\n ]\n ],\n \"b\": [\n [\n 5\n ],\n [\n 6\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 17\n ],\n [\n 39\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": [\n [\n 0\n ]\n ],\n \"b\": [\n [\n 9\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 0\n ]\n ]\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"a\":[[1,2],[3,4]],\"b\":[[5],[6]]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[17],[39]]}},{\"request\":{\"input\":{\"a\":[[0]],\"b\":[[9]]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[0]]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-029-matrix-product","timeout_seconds":10,"title":"Matrix Product — workspace service"} 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Polynomial — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: integer coefficients in ascending power order (c0,c1,...) and integer evaluation points. Return values at each point. Empty coefficients denote zero polynomial.\nRequired input fields: coefficients, points.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"coefficients\": [\n 1,\n 2,\n 3\n ],\n \"points\": [\n 0,\n 1,\n -1,\n 2\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n 1,\n 6,\n 2,\n 17\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"coefficients\": [],\n \"points\": [\n 1,\n 0\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n 0,\n 0\n ]\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"coefficients\":[1,2,3],\"points\":[0,1,-1,2]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[1,6,2,17]}},{\"request\":{\"input\":{\"coefficients\":[],\"points\":[1,0]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[0,0]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-030-polynomial","timeout_seconds":10,"title":"Polynomial — workspace 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Prime Factors — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: integer number in 1..10000000. Return [prime,exponent] pairs in ascending prime order; 1 returns [].\nRequired input fields: number.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"number\": 360\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n 2,\n 3\n ],\n [\n 3,\n 2\n ],\n [\n 5,\n 1\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"number\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"number\":360},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[2,3],[3,2],[5,1]]}},{\"request\":{\"input\":{\"number\":1},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-031-prime-factors","timeout_seconds":10,"title":"Prime Factors — workspace service"} 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Base Convert — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: digits (valid integer representation, optional leading -, case-insensitive ASCII), from_base,to_base (2..36). Convert to lowercase digits 0-9a-z with no leading zero or plus; zero is \"0\". Magnitude <=2^100.\nRequired input fields: digits, from_base, to_base.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"digits\": \"ff\",\n \"from_base\": 16,\n \"to_base\": 2\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": \"11111111\"\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"digits\": \"-0\",\n \"from_base\": 10,\n \"to_base\": 36\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": \"0\"\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"digits\":\"ff\",\"from_base\":16,\"to_base\":2},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":\"11111111\"}},{\"request\":{\"input\":{\"digits\":\"-0\",\"from_base\":10,\"to_base\":36},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":\"0\"}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-032-base-convert","timeout_seconds":10,"title":"Base Convert — workspace service"} 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Money Split — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: nonnegative integer amount in cents, nonempty nonnegative integer weights with positive sum. Allocate by largest remainder: floor exact proportional shares, then give leftover cents to greatest fractional remainders, ties to lowest index. Return integer shares totaling amount.\nRequired input fields: amount, weights.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"amount\": 10,\n \"weights\": [\n 1,\n 1,\n 1\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n 4,\n 3,\n 3\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"amount\": 0,\n \"weights\": [\n 1\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n 0\n ]\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"amount\":10,\"weights\":[1,1,1]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[4,3,3]}},{\"request\":{\"input\":{\"amount\":0,\"weights\":[1]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[0]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-033-money-split","timeout_seconds":10,"title":"Money Split — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"subtotal\":\"1035.04\",\"tax\":\"77.63\",\"total\":\"1112.67\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1136.66\",\"tax\":\"227.33\",\"total\":\"1363.99\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1809.53\",\"tax\":\"361.91\",\"total\":\"2171.44\"}},{\"ok\":true,\"result\":{\"subtotal\":\"2296.65\",\"tax\":\"0.00\",\"total\":\"2296.65\"}},{\"ok\":true,\"result\":{\"subtotal\":\"0.00\",\"tax\":\"0.00\",\"total\":\"0.00\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1907.23\",\"tax\":\"143.04\",\"total\":\"2050.27\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1168.50\",\"tax\":\"233.70\",\"total\":\"1402.20\"}},{\"ok\":true,\"result\":{\"subtotal\":\"503.64\",\"tax\":\"100.73\",\"total\":\"604.37\"}},{\"ok\":true,\"result\":{\"subtotal\":\"536.49\",\"tax\":\"107.30\",\"total\":\"643.79\"}},{\"ok\":true,\"result\":{\"subtotal\":\"551.38\",\"tax\":\"0.00\",\"total\":\"551.38\"}},{\"ok\":true,\"result\":{\"subtotal\":\"2674.20\",\"tax\":\"200.57\",\"total\":\"2874.77\"}},{\"ok\":true,\"result\":{\"subtotal\":\"277.73\",\"tax\":\"20.83\",\"total\":\"298.56\"}},{\"ok\":true,\"result\":{\"subtotal\":\"138.56\",\"tax\":\"27.71\",\"total\":\"166.27\"}},{\"ok\":true,\"result\":{\"subtotal\":\"539.67\",\"tax\":\"40.48\",\"total\":\"580.15\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1274.81\",\"tax\":\"0.00\",\"total\":\"1274.81\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1605.04\",\"tax\":\"120.38\",\"total\":\"1725.42\"}},{\"ok\":true,\"result\":{\"subtotal\":\"579.06\",\"tax\":\"115.81\",\"total\":\"694.87\"}},{\"ok\":true,\"result\":{\"subtotal\":\"345.71\",\"tax\":\"25.93\",\"total\":\"371.64\"}},{\"ok\":true,\"result\":{\"subtotal\":\"235.63\",\"tax\":\"0.00\",\"total\":\"235.63\"}},{\"ok\":true,\"result\":{\"subtotal\":\"296.13\",\"tax\":\"22.21\",\"total\":\"318.34\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1304.53\",\"tax\":\"97.84\",\"total\":\"1402.37\"}},{\"ok\":true,\"result\":{\"subtotal\":\"101.27\",\"tax\":\"20.25\",\"total\":\"121.52\"}},{\"ok\":true,\"result\":{\"subtotal\":\"218.84\",\"tax\":\"43.77\",\"total\":\"262.61\"}},{\"ok\":true,\"result\":{\"subtotal\":\"965.14\",\"tax\":\"72.39\",\"total\":\"1037.53\"}}],\"requests\":[{\"input\":{\"items\":[{\"price\":\"59.096\",\"quantity\":3},{\"price\":\"69.454\",\"quantity\":1},{\"price\":\"97.206\",\"quantity\":5},{\"price\":\"78.700\",\"quantity\":3},{\"price\":\"26.777\",\"quantity\":0},{\"price\":\"3.320\",\"quantity\":5},{\"price\":\"49.566\",\"quantity\":1}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"41.099\",\"quantity\":5},{\"price\":\"32.186\",\"quantity\":6},{\"price\":\"3.512\",\"quantity\":2},{\"price\":\"91.378\",\"quantity\":8}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"93.927\",\"quantity\":8},{\"price\":\"71.027\",\"quantity\":9},{\"price\":\"46.541\",\"quantity\":9}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"5.064\",\"quantity\":4},{\"price\":\"21.323\",\"quantity\":5},{\"price\":\"92.118\",\"quantity\":6},{\"price\":\"72.108\",\"quantity\":7},{\"price\":\"97.748\",\"quantity\":4},{\"price\":\"48.911\",\"quantity\":9},{\"price\":\"40.161\",\"quantity\":7}],\"tax_rate\":\"0\"},\"op\":\"solve\"},{\"input\":{\"items\":[],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"4.317\",\"quantity\":4},{\"price\":\"85.421\",\"quantity\":8},{\"price\":\"71.575\",\"quantity\":6},{\"price\":\"1.943\",\"quantity\":7},{\"price\":\"53.499\",\"quantity\":9},{\"price\":\"59.078\",\"quantity\":0},{\"price\":\"35.257\",\"quantity\":8}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"75.721\",\"quantity\":8},{\"price\":\"44.310\",\"quantity\":1},{\"price\":\"9.355\",\"quantity\":0},{\"price\":\"86.404\",\"quantity\":6}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"62.955\",\"quantity\":8},{\"price\":\"19.947\",\"quantity\":0}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"90.225\",\"quantity\":3},{\"price\":\"19.110\",\"quantity\":3},{\"price\":\"69.495\",\"quantity\":3}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"74.738\",\"quantity\":6},{\"price\":\"17.159\",\"quantity\":6}],\"tax_rate\":\"0\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"46.035\",\"quantity\":9},{\"price\":\"91.854\",\"quantity\":9},{\"price\":\"66.666\",\"quantity\":1},{\"price\":\"38.473\",\"quantity\":5},{\"price\":\"74.218\",\"quantity\":6},{\"price\":\"33.180\",\"quantity\":8},{\"price\":\"92.684\",\"quantity\":5}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"15.123\",\"quantity\":0},{\"price\":\"46.288\",\"quantity\":6},{\"price\":\"27.108\",\"quantity\":0},{\"price\":\"39.416\",\"quantity\":0}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"89.220\",\"quantity\":0},{\"price\":\"34.675\",\"quantity\":2},{\"price\":\"69.213\",\"quantity\":1}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"1.545\",\"quantity\":1},{\"price\":\"4.204\",\"quantity\":1},{\"price\":\"66.740\",\"quantity\":8}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"24.414\",\"quantity\":3},{\"price\":\"54.099\",\"quantity\":7},{\"price\":\"99.614\",\"quantity\":3},{\"price\":\"5.486\",\"quantity\":6},{\"price\":\"8.244\",\"quantity\":3},{\"price\":\"77.730\",\"quantity\":6}],\"tax_rate\":\"0\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"76.994\",\"quantity\":4},{\"price\":\"98.781\",\"quantity\":7},{\"price\":\"3.893\",\"quantity\":6},{\"price\":\"14.457\",\"quantity\":4},{\"price\":\"49.539\",\"quantity\":6},{\"price\":\"40.274\",\"quantity\":5},{\"price\":\"12.905\",\"quantity\":2}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"66.962\",\"quantity\":3},{\"price\":\"60.935\",\"quantity\":0},{\"price\":\"0.772\",\"quantity\":7},{\"price\":\"77.989\",\"quantity\":4},{\"price\":\"60.815\",\"quantity\":1}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"3.532\",\"quantity\":4},{\"price\":\"31.390\",\"quantity\":8},{\"price\":\"26.822\",\"quantity\":3}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"40.067\",\"quantity\":1},{\"price\":\"4.936\",\"quantity\":3},{\"price\":\"40.860\",\"quantity\":3},{\"price\":\"58.177\",\"quantity\":1}],\"tax_rate\":\"0\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"18.009\",\"quantity\":5},{\"price\":\"56.779\",\"quantity\":0},{\"price\":\"25.761\",\"quantity\":8}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"66.755\",\"quantity\":9},{\"price\":\"82.510\",\"quantity\":4},{\"price\":\"47.257\",\"quantity\":7},{\"price\":\"21.450\",\"quantity\":2}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"50.637\",\"quantity\":2}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"73.620\",\"quantity\":0},{\"price\":\"16.497\",\"quantity\":4},{\"price\":\"84.569\",\"quantity\":0},{\"price\":\"73.470\",\"quantity\":1},{\"price\":\"13.231\",\"quantity\":6}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"26.073\",\"quantity\":8},{\"price\":\"63.467\",\"quantity\":1},{\"price\":\"12.594\",\"quantity\":2},{\"price\":\"12.832\",\"quantity\":5},{\"price\":\"7.212\",\"quantity\":0},{\"price\":\"91.904\",\"quantity\":6},{\"price\":\"26.156\",\"quantity\":2}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"subtotal\":\"1.01\",\"tax\":\"0.20\",\"total\":\"1.21\"}},{\"ok\":true,\"result\":{\"subtotal\":\"0.00\",\"tax\":\"0.00\",\"total\":\"0.00\"}},{\"ok\":true,\"result\":{\"subtotal\":\"0.05\",\"tax\":\"0.01\",\"total\":\"0.06\"}},{\"ok\":true,\"result\":{\"subtotal\":\"1.01\",\"tax\":\"0.00\",\"total\":\"1.01\"}},{\"ok\":true,\"result\":{\"subtotal\":\"50.48\",\"tax\":\"3.79\",\"total\":\"54.27\"}}],\"requests\":[{\"input\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[],\"tax_rate\":\"0\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"0.05\",\"quantity\":1}],\"tax_rate\":\"0.1\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"1.005\",\"quantity\":1}],\"tax_rate\":\"0\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"19.99\",\"quantity\":2},{\"price\":\"3.50\",\"quantity\":3}],\"tax_rate\":\"0.075\"},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"subtotal\":\"1.01\",\"tax\":\"0.20\",\"total\":\"1.21\"}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"subtotal\":\"1.01\",\"tax\":\"0.20\",\"total\":\"1.21\"}}],\"requests\":[{\"input\":{\"tax_rate\":\"0.20\"},\"op\":\"solve\"},{\"input\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}]},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/44941870\",\"revision\":1}},{\"ok\":true,\"result\":{\"subtotal\":\"1.01\",\"tax\":\"0.20\",\"total\":\"1.21\"}},{\"ok\":true,\"result\":{\"key\":\"doc/44941870\",\"revision\":1,\"value\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"}}},{\"ok\":true,\"result\":{\"key\":\"doc/44941870\",\"revision\":2}},{\"ok\":true,\"result\":{\"subtotal\":\"50.48\",\"tax\":\"3.79\",\"total\":\"54.27\"}},{\"ok\":true,\"result\":{\"key\":\"doc/9308399\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/44941870\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/9308399\",\"revision\":3,\"value\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/44941870\",\"op\":\"get\"},{\"key\":\"doc/44941870\",\"op\":\"put\",\"value\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"}},{\"key\":\"doc/44941870\",\"op\":\"evaluate\"},{\"key\":\"doc/44941870\",\"op\":\"get\"},{\"key\":\"doc/44941870\",\"op\":\"put\",\"value\":{\"items\":[{\"price\":\"19.99\",\"quantity\":2},{\"price\":\"3.50\",\"quantity\":3}],\"tax_rate\":\"0.075\"}},{\"key\":\"doc/44941870\",\"op\":\"evaluate\"},{\"key\":\"doc/9308399\",\"op\":\"put\",\"value\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"}},{\"key\":\"doc/44941870\",\"op\":\"delete\"},{\"key\":\"doc/44941870\",\"op\":\"get\"},{\"key\":\"doc/44941870\",\"op\":\"delete\"},{\"key\":\"doc/9308399\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/33065087\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/9308399\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/44941870\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/44941870\",\"doc/9308399\",\"other/33065087\"]},{\"ok\":true,\"result\":[\"doc/44941870\",\"doc/9308399\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/33065087\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/9308399\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/33065087\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/33065087\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/9308399\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/44941870\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/33065087\",\"op\":\"get\"},{\"key\":\"other/33065087\",\"op\":\"evaluate\"},{\"key\":\"doc/44941870\",\"op\":\"evaluate\"},{\"key\":\"doc/9308399\",\"op\":\"get\"},{\"key\":\"other/33065087\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/44941870\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"numeric","entrypoint":"main.py","family":"invoice_total","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Invoice Total — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: items [{price:nonnegative decimal string,quantity:nonnegative integer}], tax_rate (nonnegative decimal string). Sum exact price*quantity then round subtotal to cents using ROUND_HALF_UP. Tax = rounded subtotal * tax_rate, rounded half-up to cents. Total=subtotal+tax. Return {subtotal,tax,total} as strings with exactly two decimal places; do not use binary floating point for monetary arithmetic.\nRequired input fields: items, tax_rate.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"items\": [\n {\n \"price\": \"0.335\",\n \"quantity\": 3\n }\n ],\n \"tax_rate\": \"0.20\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"subtotal\": \"1.01\",\n \"tax\": \"0.20\",\n \"total\": \"1.21\"\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"items\": [],\n \"tax_rate\": \"0\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"subtotal\": \"0.00\",\n \"tax\": \"0.00\",\n \"total\": \"0.00\"\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"items\":[{\"price\":\"0.335\",\"quantity\":3}],\"tax_rate\":\"0.20\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"subtotal\":\"1.01\",\"tax\":\"0.20\",\"total\":\"1.21\"}}},{\"request\":{\"input\":{\"items\":[],\"tax_rate\":\"0\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"subtotal\":\"0.00\",\"tax\":\"0.00\",\"total\":\"0.00\"}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-034-invoice-total","timeout_seconds":10,"title":"Invoice Total — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":3},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":6},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":3},{\"ok\":true,\"result\":9},{\"ok\":true,\"result\":11},{\"ok\":true,\"result\":7},{\"ok\":true,\"result\":9},{\"ok\":true,\"result\":3},{\"ok\":true,\"result\":7},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":4},{\"ok\":true,\"result\":8},{\"ok\":true,\"result\":11},{\"ok\":true,\"result\":3},{\"ok\":true,\"result\":4},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":3},{\"ok\":true,\"result\":null}],\"requests\":[{\"input\":{\"amount\":42,\"coins\":[9,14]},\"op\":\"solve\"},{\"input\":{\"amount\":67,\"coins\":[]},\"op\":\"solve\"},{\"input\":{\"amount\":4,\"coins\":[10]},\"op\":\"solve\"},{\"input\":{\"amount\":67,\"coins\":[10,14,2,6,7,7,4]},\"op\":\"solve\"},{\"input\":{\"amount\":42,\"coins\":[]},\"op\":\"solve\"},{\"input\":{\"amount\":71,\"coins\":[3,6,9]},\"op\":\"solve\"},{\"input\":{\"amount\":16,\"coins\":[9,7,14]},\"op\":\"solve\"},{\"input\":{\"amount\":26,\"coins\":[7,4,6,5,8,9,4]},\"op\":\"solve\"},{\"input\":{\"amount\":72,\"coins\":[8,3]},\"op\":\"solve\"},{\"input\":{\"amount\":41,\"coins\":[1,7]},\"op\":\"solve\"},{\"input\":{\"amount\":69,\"coins\":[9,5,13,7,1]},\"op\":\"solve\"},{\"input\":{\"amount\":57,\"coins\":[7,4]},\"op\":\"solve\"},{\"input\":{\"amount\":29,\"coins\":[9,13,5,5,6,10,12]},\"op\":\"solve\"},{\"input\":{\"amount\":77,\"coins\":[4,11,10]},\"op\":\"solve\"},{\"input\":{\"amount\":22,\"coins\":[6,9,3,11,4,5,9]},\"op\":\"solve\"},{\"input\":{\"amount\":43,\"coins\":[14,12,3,8,7]},\"op\":\"solve\"},{\"input\":{\"amount\":85,\"coins\":[4,9,8,5,11]},\"op\":\"solve\"},{\"input\":{\"amount\":56,\"coins\":[1,6,6]},\"op\":\"solve\"},{\"input\":{\"amount\":27,\"coins\":[13,6,4,9]},\"op\":\"solve\"},{\"input\":{\"amount\":25,\"coins\":[1,5,7,14]},\"op\":\"solve\"},{\"input\":{\"amount\":52,\"coins\":[]},\"op\":\"solve\"},{\"input\":{\"amount\":36,\"coins\":[8,8]},\"op\":\"solve\"},{\"input\":{\"amount\":34,\"coins\":[8,10,14,1,5]},\"op\":\"solve\"},{\"input\":{\"amount\":51,\"coins\":[13]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":0},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null}],\"requests\":[{\"input\":{\"amount\":6,\"coins\":[1,3,4]},\"op\":\"solve\"},{\"input\":{\"amount\":0,\"coins\":[]},\"op\":\"solve\"},{\"input\":{\"amount\":3,\"coins\":[2]},\"op\":\"solve\"},{\"input\":{\"amount\":10,\"coins\":[2,2,5]},\"op\":\"solve\"},{\"input\":{\"amount\":4,\"coins\":[]},\"op\":\"solve\"},{\"input\":{\"amount\":11,\"coins\":[7,3]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":2}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"amount\":6,\"coins\":[1,3,4]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":2}],\"requests\":[{\"input\":{\"amount\":6},\"op\":\"solve\"},{\"input\":{\"coins\":[1,3,4]},\"op\":\"solve\"},{\"input\":{\"amount\":6,\"coins\":[1,3,4],\"ignored_extra\":{\"nested\":true}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/14570467\",\"revision\":1}},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":{\"key\":\"doc/14570467\",\"revision\":1,\"value\":{\"amount\":6,\"coins\":[1,3,4]}}},{\"ok\":true,\"result\":{\"key\":\"doc/14570467\",\"revision\":2}},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":{\"key\":\"doc/29967938\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/14570467\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/29967938\",\"revision\":3,\"value\":{\"amount\":6,\"coins\":[1,3,4]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/14570467\",\"op\":\"get\"},{\"key\":\"doc/14570467\",\"op\":\"put\",\"value\":{\"amount\":6,\"coins\":[1,3,4]}},{\"key\":\"doc/14570467\",\"op\":\"evaluate\"},{\"key\":\"doc/14570467\",\"op\":\"get\"},{\"key\":\"doc/14570467\",\"op\":\"put\",\"value\":{\"amount\":11,\"coins\":[7,3]}},{\"key\":\"doc/14570467\",\"op\":\"evaluate\"},{\"key\":\"doc/29967938\",\"op\":\"put\",\"value\":{\"amount\":6,\"coins\":[1,3,4]}},{\"key\":\"doc/14570467\",\"op\":\"delete\"},{\"key\":\"doc/14570467\",\"op\":\"get\"},{\"key\":\"doc/14570467\",\"op\":\"delete\"},{\"key\":\"doc/29967938\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/66816517\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/29967938\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/14570467\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/14570467\",\"doc/29967938\",\"other/66816517\"]},{\"ok\":true,\"result\":[\"doc/14570467\",\"doc/29967938\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/66816517\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/29967938\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/66816517\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/66816517\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/29967938\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/14570467\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/66816517\",\"op\":\"get\"},{\"key\":\"other/66816517\",\"op\":\"evaluate\"},{\"key\":\"doc/14570467\",\"op\":\"evaluate\"},{\"key\":\"doc/29967938\",\"op\":\"get\"},{\"key\":\"other/66816517\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/14570467\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"numeric","entrypoint":"main.py","family":"coin_change","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Coin Change — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: coins (positive integer denominations, duplicates allowed), amount (0..10000). Unlimited supply of each coin. Return minimum number of coins or null if impossible. Empty coins can make only zero.\nRequired input fields: coins, amount.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"coins\": [\n 1,\n 3,\n 4\n ],\n \"amount\": 6\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 2\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"coins\": [],\n \"amount\": 0\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 0\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"amount\":6,\"coins\":[1,3,4]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":2}},{\"request\":{\"input\":{\"amount\":0,\"coins\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":0}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-035-coin-change","timeout_seconds":10,"title":"Coin Change — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[\"e\"]},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\",\"e\"]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"a\",\"c\"]},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\",\"d\"]},{\"ok\":true,\"result\":[\"d\",\"e\"]},{\"ok\":true,\"result\":[\"c\"]},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\"]},{\"ok\":true,\"result\":[\"b\",\"c\"]},{\"ok\":true,\"result\":[\"a\",\"b\"]},{\"ok\":true,\"result\":[\"e\"]},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\"]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"b\",\"c\",\"d\"]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"a\",\"b\"]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"e\"]},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\",\"d\"]},{\"ok\":true,\"result\":[\"a\",\"e\",\"f\"]},{\"ok\":true,\"result\":[\"f\"]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"a\",\"b\"]},{\"ok\":true,\"result\":[\"c\"]}],\"requests\":[{\"input\":{\"edges\":[],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\",\"f\"],\"start\":\"e\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"e\",\"a\"],[\"d\",\"b\"],[\"b\",\"a\"],[\"b\",\"c\"],[\"a\",\"e\"],[\"e\",\"b\"],[\"c\",\"b\"],[\"c\",\"e\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"c\",\"d\"],[\"c\",\"a\"],[\"d\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"c\"],[\"c\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"d\",\"a\"],[\"b\",\"c\"],[\"d\",\"d\"],[\"c\",\"b\"],[\"d\",\"a\"],[\"d\",\"b\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"d\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"b\",\"c\"],[\"c\",\"c\"],[\"d\",\"d\"],[\"e\",\"d\"],[\"b\",\"d\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\"],\"start\":\"e\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"e\"],[\"e\",\"b\"],[\"a\",\"c\"],[\"b\",\"e\"],[\"d\",\"b\"],[\"d\",\"a\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\"],\"start\":\"c\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"b\",\"c\"],[\"b\",\"b\"],[\"a\",\"b\"],[\"c\",\"b\"],[\"b\",\"c\"],[\"c\",\"a\"],[\"a\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\"],\"start\":\"b\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"b\",\"c\"],[\"c\",\"b\"],[\"a\",\"d\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"c\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"b\",\"b\"],[\"a\",\"b\"],[\"b\",\"a\"],[\"a\",\"a\"],[\"b\",\"b\"],[\"a\",\"a\"],[\"b\",\"b\"],[\"b\",\"b\"],[\"a\",\"b\"],[\"b\",\"b\"],[\"b\",\"b\"],[\"a\",\"a\"]],\"nodes\":[\"a\",\"b\"],\"start\":\"b\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"f\"],[\"c\",\"b\"],[\"d\",\"b\"],[\"b\",\"a\"],[\"c\",\"d\"],[\"b\",\"d\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\",\"f\"],\"start\":\"e\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"b\",\"c\"],[\"c\",\"c\"],[\"a\",\"b\"],[\"b\",\"b\"]],\"nodes\":[\"a\",\"b\",\"c\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"a\"],[\"a\",\"a\"],[\"a\",\"a\"],[\"a\",\"a\"],[\"a\",\"a\"]],\"nodes\":[\"a\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"e\",\"d\"],[\"f\",\"d\"],[\"b\",\"b\"],[\"c\",\"b\"],[\"b\",\"b\"],[\"c\",\"d\"],[\"b\",\"c\"],[\"c\",\"c\"],[\"a\",\"f\"],[\"a\",\"f\"],[\"f\",\"a\"],[\"e\",\"d\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\",\"f\"],\"start\":\"b\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"a\"],[\"a\",\"a\"],[\"a\",\"a\"],[\"a\",\"a\"],[\"a\",\"a\"]],\"nodes\":[\"a\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"a\"],[\"d\",\"b\"],[\"b\",\"b\"],[\"a\",\"b\"],[\"d\",\"b\"],[\"c\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"e\",\"d\"],[\"c\",\"c\"],[\"e\",\"d\"],[\"c\",\"a\"],[\"e\",\"e\"],[\"c\",\"d\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"d\",\"e\"],[\"d\",\"d\"],[\"b\",\"b\"],[\"a\",\"c\"],[\"c\",\"d\"],[\"d\",\"c\"],[\"c\",\"c\"],[\"d\",\"e\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\"],\"start\":\"e\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"d\",\"c\"],[\"c\",\"d\"],[\"a\",\"c\"],[\"d\",\"b\"],[\"d\",\"d\"],[\"d\",\"a\"],[\"c\",\"b\"],[\"c\",\"d\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"d\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"e\"],[\"f\",\"e\"],[\"e\",\"a\"],[\"b\",\"b\"],[\"c\",\"b\"],[\"a\",\"a\"],[\"e\",\"f\"],[\"c\",\"d\"],[\"f\",\"e\"],[\"c\",\"b\"],[\"d\",\"b\"],[\"d\",\"b\"],[\"b\",\"b\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\",\"f\"],\"start\":\"e\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"e\",\"a\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\",\"f\"],\"start\":\"f\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"c\",\"a\"],[\"b\",\"d\"],[\"c\",\"c\"],[\"b\",\"b\"],[\"d\",\"a\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\",\"e\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"c\",\"a\"],[\"c\",\"b\"],[\"b\",\"a\"],[\"c\",\"c\"],[\"c\",\"b\"]],\"nodes\":[\"a\",\"b\",\"c\"],\"start\":\"b\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"c\",\"c\"],[\"c\",\"c\"],[\"a\",\"b\"],[\"a\",\"a\"]],\"nodes\":[\"a\",\"b\",\"c\"],\"start\":\"c\"},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[\"a\",\"b\",\"c\"]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"a\",\"b\"]},{\"ok\":true,\"result\":[\"x\"]}],\"requests\":[{\"input\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[],\"nodes\":[\"a\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"b\",\"a\"]],\"nodes\":[\"a\",\"b\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"a\"],[\"a\",\"b\"]],\"nodes\":[\"a\",\"b\"],\"start\":\"b\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"x\",\"x\"]],\"nodes\":[\"x\",\"y\"],\"start\":\"x\"},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\"]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\"]}],\"requests\":[{\"input\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"]},\"op\":\"solve\"},{\"input\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"ignored_extra\":{\"nested\":true},\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/46141137\",\"revision\":1}},{\"ok\":true,\"result\":[\"a\",\"b\",\"c\"]},{\"ok\":true,\"result\":{\"key\":\"doc/46141137\",\"revision\":1,\"value\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"}}},{\"ok\":true,\"result\":{\"key\":\"doc/46141137\",\"revision\":2}},{\"ok\":true,\"result\":[\"x\"]},{\"ok\":true,\"result\":{\"key\":\"doc/47020280\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/46141137\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/47020280\",\"revision\":3,\"value\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/46141137\",\"op\":\"get\"},{\"key\":\"doc/46141137\",\"op\":\"put\",\"value\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"}},{\"key\":\"doc/46141137\",\"op\":\"evaluate\"},{\"key\":\"doc/46141137\",\"op\":\"get\"},{\"key\":\"doc/46141137\",\"op\":\"put\",\"value\":{\"edges\":[[\"x\",\"x\"]],\"nodes\":[\"x\",\"y\"],\"start\":\"x\"}},{\"key\":\"doc/46141137\",\"op\":\"evaluate\"},{\"key\":\"doc/47020280\",\"op\":\"put\",\"value\":{\"edges\":[[\"a\",\"b\"],[\"b\",\"c\"]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"}},{\"key\":\"doc/46141137\",\"op\":\"delete\"},{\"key\":\"doc/46141137\",\"op\":\"get\"},{\"key\":\"doc/46141137\",\"op\":\"delete\"},{\"key\":\"doc/47020280\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/44718954\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/47020280\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/46141137\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/46141137\",\"doc/47020280\",\"other/44718954\"]},{\"ok\":true,\"result\":[\"doc/46141137\",\"doc/47020280\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/44718954\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/47020280\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/44718954\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/44718954\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/47020280\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/46141137\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/44718954\",\"op\":\"get\"},{\"key\":\"other/44718954\",\"op\":\"evaluate\"},{\"key\":\"doc/46141137\",\"op\":\"evaluate\"},{\"key\":\"doc/47020280\",\"op\":\"get\"},{\"key\":\"other/44718954\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/46141137\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"graphs","entrypoint":"main.py","family":"graph_reach","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Graph Reach — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: nodes (unique strings), edges ([from,to] directed pairs, endpoints in nodes), start (in nodes). Return sorted nodes reachable from start including itself. Allow cycles, self-edges and duplicate edges; <=100 nodes.\nRequired input fields: nodes, edges, start.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [\n \"a\",\n \"b\",\n \"c\",\n \"d\"\n ],\n \"edges\": [\n [\n \"a\",\n \"b\"\n ],\n [\n \"b\",\n \"c\"\n ]\n ],\n \"start\": \"a\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"a\",\n \"b\",\n \"c\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [\n \"a\"\n ],\n \"edges\": [],\n \"start\": \"a\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"a\"\n ]\n }\n 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Shortest Path — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. 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Cycles, parallel edges, zero weights allowed; <=100 nodes.\nRequired input fields: nodes, edges, start.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [\n \"a\",\n \"b\",\n \"c\",\n \"d\"\n ],\n \"edges\": [\n [\n \"a\",\n \"b\",\n 5\n ],\n [\n \"a\",\n \"c\",\n 1\n ],\n [\n \"c\",\n \"b\",\n 1\n ]\n ],\n \"start\": \"a\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"a\": 0,\n \"b\": 2,\n \"c\": 1,\n \"d\": null\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [\n \"a\"\n ],\n \"edges\": [],\n \"start\": \"a\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"a\": 0\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"edges\":[[\"a\",\"b\",5],[\"a\",\"c\",1],[\"c\",\"b\",1]],\"nodes\":[\"a\",\"b\",\"c\",\"d\"],\"start\":\"a\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"a\":0,\"b\":2,\"c\":1,\"d\":null}}},{\"request\":{\"input\":{\"edges\":[],\"nodes\":[\"a\"],\"start\":\"a\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"a\":0}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-037-shortest-path","timeout_seconds":10,"title":"Shortest Path — workspace service"} 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",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/37094272\",\"op\":\"get\"},{\"key\":\"other/37094272\",\"op\":\"evaluate\"},{\"key\":\"doc/24502292\",\"op\":\"evaluate\"},{\"key\":\"doc/96622968\",\"op\":\"get\"},{\"key\":\"other/37094272\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/24502292\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"graphs","entrypoint":"main.py","family":"topological_order","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Topological Order — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: unique string nodes, directed edges [from,to]. Return topological order choosing lexicographically smallest currently available node each step, or null on any cycle. Duplicate edges allowed and do not change dependencies. Endpoints in nodes; <=100 nodes.\nRequired input fields: nodes, edges.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [\n \"c\",\n \"a\",\n \"b\"\n ],\n \"edges\": [\n [\n \"a\",\n \"c\"\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"a\",\n \"b\",\n \"c\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [],\n \"edges\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"edges\":[[\"a\",\"c\"]],\"nodes\":[\"c\",\"a\",\"b\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[\"a\",\"b\",\"c\"]}},{\"request\":{\"input\":{\"edges\":[],\"nodes\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-038-topological-order","timeout_seconds":10,"title":"Topological Order — workspace service"} 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Connected Components — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: unique string nodes, undirected edges [a,b], endpoints in nodes. Return components as sorted lists of nodes, ordered by each component first node. Include isolated vertices; allow duplicate edges and self-loops.\nRequired input fields: nodes, edges.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [\n \"d\",\n \"c\",\n \"b\",\n \"a\"\n ],\n \"edges\": [\n [\n \"a\",\n \"b\"\n ],\n [\n \"c\",\n \"d\"\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n \"a\",\n \"b\"\n ],\n [\n \"c\",\n \"d\"\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [],\n \"edges\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"edges\":[[\"a\",\"b\"],[\"c\",\"d\"]],\"nodes\":[\"d\",\"c\",\"b\",\"a\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[\"a\",\"b\"],[\"c\",\"d\"]]}},{\"request\":{\"input\":{\"edges\":[],\"nodes\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-039-connected-components","timeout_seconds":10,"title":"Connected Components — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":3},{\"ok\":true,\"result\":5},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":1},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":4},{\"ok\":true,\"result\":5},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":1},{\"ok\":true,\"result\":7},{\"ok\":true,\"result\":1},{\"ok\":true,\"result\":0},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":6},{\"ok\":true,\"result\":6}],\"requests\":[{\"input\":{\"end\":[0,2],\"grid\":[\"#.#..\",\"...#.\",\".....\",\".....\",\"..#.#\"],\"start\":[1,1]},\"op\":\"solve\"},{\"input\":{\"end\":[2,3],\"grid\":[\"#.#..\",\"#.#..\",\"#...#\",\".#.#.\",\"#....\"],\"start\":[0,4]},\"op\":\"solve\"},{\"input\":{\"end\":[0,1],\"grid\":[\".....\",\".....\",\"..#..\",\".#...\",\"#....\"],\"start\":[2,4]},\"op\":\"solve\"},{\"input\":{\"end\":[2,1],\"grid\":[\"#....\",\".##..\",\".....\",\".#...\",\".#...\"],\"start\":[3,2]},\"op\":\"solve\"},{\"input\":{\"end\":[1,4],\"grid\":[\"#..#.\",\"....#\",\".###.\",\".#..#\",\".#...\"],\"start\":[2,0]},\"op\":\"solve\"},{\"input\":{\"end\":[4,1],\"grid\":[\".....\",\"....#\",\".....\",\"#..#.\",\".....\"],\"start\":[3,1]},\"op\":\"solve\"},{\"input\":{\"end\":[2,4],\"grid\":[\".....\",\".....\",\".....\",\".##.#\",\"....#\"],\"start\":[4,4]},\"op\":\"solve\"},{\"input\":{\"end\":[3,1],\"grid\":[\"..#..\",\"...##\",\"##..#\",\"##...\",\"...#.\"],\"start\":[1,3]},\"op\":\"solve\"},{\"input\":{\"end\":[2,2],\"grid\":[\".....\",\"#.#.#\",\".....\",\".....\",\"#..#.\"],\"start\":[0,2]},\"op\":\"solve\"},{\"input\":{\"end\":[3,2],\"grid\":[\".....\",\"..#..\",\"...#.\",\".#...\",\"...#.\"],\"start\":[1,3]},\"op\":\"solve\"},{\"input\":{\"end\":[3,4],\"grid\":[\"....#\",\".##..\",\".....\",\".#...\",\".#...\"],\"start\":[1,4]},\"op\":\"solve\"},{\"input\":{\"end\":[2,4],\"grid\":[\".....\",\"....#\",\"..###\",\".....\",\"..##.\"],\"start\":[2,1]},\"op\":\"solve\"},{\"input\":{\"end\":[1,1],\"grid\":[\".....\",\".....\",\".##.#\",\".#.#.\",\"#.#.#\"],\"start\":[0,2]},\"op\":\"solve\"},{\"input\":{\"end\":[1,4],\"grid\":[\".#...\",\"....#\",\".....\",\"..#..\",\"....#\"],\"start\":[3,1]},\"op\":\"solve\"},{\"input\":{\"end\":[2,3],\"grid\":[\".....\",\"#....\",\"....#\",\"..#.#\",\".....\"],\"start\":[3,4]},\"op\":\"solve\"},{\"input\":{\"end\":[3,2],\"grid\":[\".#...\",\"....#\",\".#...\",\"...#.\",\".###.\"],\"start\":[1,4]},\"op\":\"solve\"},{\"input\":{\"end\":[2,2],\"grid\":[\"#....\",\".#.#.\",\".....\",\"#....\",\".....\"],\"start\":[2,1]},\"op\":\"solve\"},{\"input\":{\"end\":[1,4],\"grid\":[\".#...\",\".....\",\".#...\",\"....#\",\"....#\"],\"start\":[4,0]},\"op\":\"solve\"},{\"input\":{\"end\":[2,1],\"grid\":[\"...#.\",\"....#\",\"....#\",\".....\",\".#...\"],\"start\":[1,1]},\"op\":\"solve\"},{\"input\":{\"end\":[2,4],\"grid\":[\".....\",\"#.#..\",\"..#..\",\"....#\",\"..##.\"],\"start\":[2,4]},\"op\":\"solve\"},{\"input\":{\"end\":[0,3],\"grid\":[\"#..##\",\".....\",\".#.#.\",\".....\",\".....\"],\"start\":[0,2]},\"op\":\"solve\"},{\"input\":{\"end\":[0,4],\"grid\":[\"..###\",\"...#.\",\".#..#\",\"..#..\",\"..#..\"],\"start\":[0,4]},\"op\":\"solve\"},{\"input\":{\"end\":[3,4],\"grid\":[\".....\",\".##..\",\".....\",\".....\",\"#..#.\"],\"start\":[0,1]},\"op\":\"solve\"},{\"input\":{\"end\":[0,2],\"grid\":[\".....\",\"....#\",\".##..\",\"..#..\",\"..#..\"],\"start\":[4,0]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":4},{\"ok\":true,\"result\":0},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":2}],\"requests\":[{\"input\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]},\"op\":\"solve\"},{\"input\":{\"end\":[0,0],\"grid\":[\".\"],\"start\":[0,0]},\"op\":\"solve\"},{\"input\":{\"end\":[0,0],\"grid\":[\"#\"],\"start\":[0,0]},\"op\":\"solve\"},{\"input\":{\"end\":[0,2],\"grid\":[\".#.\"],\"start\":[0,0]},\"op\":\"solve\"},{\"input\":{\"end\":[0,0],\"grid\":[\"..\",\"..\"],\"start\":[1,1]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":4}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":4}],\"requests\":[{\"input\":{\"end\":[2,2],\"start\":[0,0]},\"op\":\"solve\"},{\"input\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"]},\"op\":\"solve\"},{\"input\":{\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]},\"op\":\"solve\"},{\"input\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"ignored_extra\":{\"nested\":true},\"start\":[0,0]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/8884755\",\"revision\":1}},{\"ok\":true,\"result\":4},{\"ok\":true,\"result\":{\"key\":\"doc/8884755\",\"revision\":1,\"value\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]}}},{\"ok\":true,\"result\":{\"key\":\"doc/8884755\",\"revision\":2}},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":{\"key\":\"doc/90927444\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/8884755\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/90927444\",\"revision\":3,\"value\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/8884755\",\"op\":\"get\"},{\"key\":\"doc/8884755\",\"op\":\"put\",\"value\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]}},{\"key\":\"doc/8884755\",\"op\":\"evaluate\"},{\"key\":\"doc/8884755\",\"op\":\"get\"},{\"key\":\"doc/8884755\",\"op\":\"put\",\"value\":{\"end\":[0,0],\"grid\":[\"..\",\"..\"],\"start\":[1,1]}},{\"key\":\"doc/8884755\",\"op\":\"evaluate\"},{\"key\":\"doc/90927444\",\"op\":\"put\",\"value\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]}},{\"key\":\"doc/8884755\",\"op\":\"delete\"},{\"key\":\"doc/8884755\",\"op\":\"get\"},{\"key\":\"doc/8884755\",\"op\":\"delete\"},{\"key\":\"doc/90927444\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/71795948\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/90927444\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/8884755\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/8884755\",\"doc/90927444\",\"other/71795948\"]},{\"ok\":true,\"result\":[\"doc/8884755\",\"doc/90927444\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/71795948\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/90927444\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/71795948\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/71795948\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/90927444\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/8884755\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/71795948\",\"op\":\"get\"},{\"key\":\"other/71795948\",\"op\":\"evaluate\"},{\"key\":\"doc/8884755\",\"op\":\"evaluate\"},{\"key\":\"doc/90927444\",\"op\":\"get\"},{\"key\":\"other/71795948\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/8884755\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"graphs","entrypoint":"main.py","family":"grid_route","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Grid Route — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: grid (nonempty equal-length strings containing . or #), start,end ([row,column], valid coordinates). Move one cell up/down/left/right through . cells. Return shortest step count, or null if blocked/unreachable, including blocked start or end. Grid <=50x50.\nRequired input fields: grid, start, end.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"grid\": [\n \"...\",\n \".#.\",\n \"...\"\n ],\n \"start\": [\n 0,\n 0\n ],\n \"end\": [\n 2,\n 2\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 4\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"grid\": [\n \".\"\n ],\n \"start\": [\n 0,\n 0\n ],\n \"end\": [\n 0,\n 0\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 0\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"end\":[2,2],\"grid\":[\"...\",\".#.\",\"...\"],\"start\":[0,0]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":4}},{\"request\":{\"input\":{\"end\":[0,0],\"grid\":[\".\"],\"start\":[0,0]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":0}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-040-grid-route","timeout_seconds":10,"title":"Grid Route — workspace 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s","entrypoint":"main.py","family":"tree_outline","language":"python","num_assertions":82,"num_scenarios":8,"prompt":"# Tree Outline — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: nodes [{id:unique string,parent:string or null}], forming a forest (all nonnull parents exist, no cycles), <=100 nodes. Return preorder [{id,depth}], roots and each sibling list sorted by id, roots depth 0.\nRequired input fields: nodes.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": [\n {\n \"id\": \"b\",\n \"parent\": \"a\"\n },\n {\n \"id\": \"a\",\n \"parent\": null\n },\n {\n \"id\": \"c\",\n \"parent\": null\n }\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"id\": \"a\",\n \"depth\": 0\n },\n {\n \"id\": \"b\",\n \"depth\": 1\n },\n {\n \"id\": \"c\",\n \"depth\": 0\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"nodes\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"nodes\":[{\"id\":\"b\",\"parent\":\"a\"},{\"id\":\"a\",\"parent\":null},{\"id\":\"c\",\"parent\":null}]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[{\"depth\":0,\"id\":\"a\"},{\"depth\":1,\"id\":\"b\"},{\"depth\":0,\"id\":\"c\"}]}},{\"request\":{\"input\":{\"nodes\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-041-tree-outline","timeout_seconds":10,"title":"Tree Outline — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[\"a\",\"d\",\"c\",\"e\"]},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":null}],\"requests\":[{\"input\":{\"dependencies\":{\"a\":[\"b\",\"c\"],\"b\":[\"a\",\"c\"],\"c\":[\"c\"]},\"targets\":[\"c\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"a\"],\"b\":[\"a\"]},\"targets\":[]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[]},\"targets\":[]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"a\"],\"b\":[\"b\"]},\"targets\":[\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"e\",\"b\",\"c\",\"a\"],\"b\":[\"d\"],\"c\":[\"b\",\"c\",\"d\",\"a\",\"e\"],\"d\":[\"c\",\"a\",\"b\",\"e\",\"d\"],\"e\":[\"a\",\"b\",\"e\"]},\"targets\":[\"a\",\"d\",\"e\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"a\"]},\"targets\":[]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[],\"c\":[\"d\",\"a\"],\"d\":[\"b\"]},\"targets\":[\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"a\"],\"b\":[\"a\",\"b\"]},\"targets\":[\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"a\",\"c\",\"b\"],\"b\":[\"c\",\"a\",\"b\"],\"c\":[\"a\",\"b\",\"c\"]},\"targets\":[\"b\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"b\",\"a\",\"c\",\"d\"],\"b\":[\"a\",\"b\",\"c\",\"d\"],\"c\":[],\"d\":[\"d\",\"a\"]},\"targets\":[\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[]},\"targets\":[]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[\"a\",\"b\",\"d\"],\"c\":[\"d\"],\"d\":[\"a\"],\"e\":[\"d\"]},\"targets\":[\"e\",\"c\",\"d\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"a\"]},\"targets\":[\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"c\",\"b\",\"a\"],\"b\":[\"c\"],\"c\":[\"a\",\"c\",\"b\"]},\"targets\":[\"b\",\"c\",\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[\"b\"],\"c\":[\"a\"],\"d\":[\"d\"]},\"targets\":[\"d\",\"a\",\"c\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"d\",\"b\",\"c\",\"a\"],\"b\":[\"c\"],\"c\":[\"b\",\"d\"],\"d\":[\"b\",\"d\"]},\"targets\":[\"c\",\"d\",\"b\",\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"b\",\"a\"],\"b\":[\"c\"],\"c\":[\"a\"],\"d\":[\"d\",\"a\",\"c\"]},\"targets\":[\"c\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"c\",\"a\"],\"b\":[\"a\",\"c\",\"b\"],\"c\":[\"c\"]},\"targets\":[\"c\",\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[\"c\"],\"c\":[\"a\",\"c\",\"b\",\"e\",\"d\"],\"d\":[\"b\",\"c\",\"d\"],\"e\":[]},\"targets\":[\"b\",\"d\",\"e\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"b\",\"a\"],\"b\":[\"a\",\"b\",\"c\"],\"c\":[\"b\",\"c\",\"a\"]},\"targets\":[\"a\",\"b\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[\"a\",\"c\",\"d\"],\"c\":[\"a\",\"d\",\"c\"],\"d\":[\"a\",\"d\",\"e\"],\"e\":[\"d\",\"a\"]},\"targets\":[]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[],\"c\":[\"a\",\"d\",\"c\"],\"d\":[]},\"targets\":[\"b\",\"c\",\"d\",\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[\"b\",\"c\",\"a\"],\"c\":[\"d\",\"c\"],\"d\":[\"b\",\"c\"]},\"targets\":[\"d\",\"b\",\"c\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"d\",\"a\"],\"b\":[\"b\",\"d\"],\"c\":[\"b\",\"d\"],\"d\":[\"b\",\"d\",\"c\",\"e\",\"a\"],\"e\":[\"b\",\"e\",\"c\",\"a\",\"d\"]},\"targets\":[\"d\",\"b\",\"e\",\"a\",\"c\"]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[\"cfg\",\"lib\",\"app\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":null},{\"ok\":true,\"result\":[\"a\"]},{\"ok\":true,\"result\":[\"a\",\"b\"]}],\"requests\":[{\"input\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"targets\":[\"app\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{},\"targets\":[]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[\"b\"],\"b\":[\"a\"]},\"targets\":[\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"x\":[\"x\"]},\"targets\":[\"a\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"a\":[],\"b\":[\"a\"]},\"targets\":[\"b\",\"a\",\"b\"]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"cfg\",\"lib\",\"app\"]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"targets\":[\"app\"]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[\"cfg\",\"lib\",\"app\"]}],\"requests\":[{\"input\":{\"targets\":[\"app\"]},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]}},\"op\":\"solve\"},{\"input\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"ignored_extra\":{\"nested\":true},\"targets\":[\"app\"]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/26260709\",\"revision\":1}},{\"ok\":true,\"result\":[\"cfg\",\"lib\",\"app\"]},{\"ok\":true,\"result\":{\"key\":\"doc/26260709\",\"revision\":1,\"value\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"targets\":[\"app\"]}}},{\"ok\":true,\"result\":{\"key\":\"doc/26260709\",\"revision\":2}},{\"ok\":true,\"result\":[\"a\",\"b\"]},{\"ok\":true,\"result\":{\"key\":\"doc/64590441\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/26260709\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/64590441\",\"revision\":3,\"value\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"targets\":[\"app\"]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/26260709\",\"op\":\"get\"},{\"key\":\"doc/26260709\",\"op\":\"put\",\"value\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"targets\":[\"app\"]}},{\"key\":\"doc/26260709\",\"op\":\"evaluate\"},{\"key\":\"doc/26260709\",\"op\":\"get\"},{\"key\":\"doc/26260709\",\"op\":\"put\",\"value\":{\"dependencies\":{\"a\":[],\"b\":[\"a\"]},\"targets\":[\"b\",\"a\",\"b\"]}},{\"key\":\"doc/26260709\",\"op\":\"evaluate\"},{\"key\":\"doc/64590441\",\"op\":\"put\",\"value\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"targets\":[\"app\"]}},{\"key\":\"doc/26260709\",\"op\":\"delete\"},{\"key\":\"doc/26260709\",\"op\":\"get\"},{\"key\":\"doc/26260709\",\"op\":\"delete\"},{\"key\":\"doc/64590441\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/99585690\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/64590441\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/26260709\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/26260709\",\"doc/64590441\",\"other/99585690\"]},{\"ok\":true,\"result\":[\"doc/26260709\",\"doc/64590441\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/99585690\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/64590441\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/99585690\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/99585690\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/64590441\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/26260709\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/99585690\",\"op\":\"get\"},{\"key\":\"other/99585690\",\"op\":\"evaluate\"},{\"key\":\"doc/26260709\",\"op\":\"evaluate\"},{\"key\":\"doc/64590441\",\"op\":\"get\"},{\"key\":\"other/99585690\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/26260709\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"graphs","entrypoint":"main.py","family":"dependency_build","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Dependency Build — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: dependencies (object of string node -> dependency string list), targets (strings). Every referenced name exists. DFS each distinct target in sorted order, visit dependencies in sorted order, append each node after dependencies once. Return build order; return null on a cycle reachable from a target. Unreachable cycles ignored; <=100 nodes.\nRequired input fields: dependencies, targets.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"dependencies\": {\n \"app\": [\n \"lib\",\n \"cfg\"\n ],\n \"lib\": [\n \"cfg\"\n ],\n \"cfg\": [],\n \"unused\": []\n },\n \"targets\": [\n \"app\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"cfg\",\n \"lib\",\n \"app\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"dependencies\": {},\n \"targets\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"dependencies\":{\"app\":[\"lib\",\"cfg\"],\"cfg\":[],\"lib\":[\"cfg\"],\"unused\":[]},\"targets\":[\"app\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[\"cfg\",\"lib\",\"app\"]}},{\"request\":{\"input\":{\"dependencies\":{},\"targets\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-042-dependency-build","timeout_seconds":10,"title":"Dependency Build — workspace service"} 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\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"systems","entrypoint":"main.py","family":"path_normalize","language":"python","num_assertions":82,"num_scenarios":8,"prompt":"# Path Normalize — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: paths (POSIX path strings). Treat all paths as rooted at /. Remove repeated / and . segments; .. pops a segment if available and is ignored at root. Preserve other segment code points and backslashes literally. Return absolute paths without trailing / except root. No filesystem access.\nRequired input fields: paths.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"paths\": [\n \"a/../b//c/\",\n \"/../../x\",\n \"\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"/b/c\",\n \"/x\",\n \"/\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"paths\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"paths\":[\"a/../b//c/\",\"/../../x\",\"\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[\"/b/c\",\"/x\",\"/\"]}},{\"request\":{\"input\":{\"paths\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-043-path-normalize","timeout_seconds":10,"title":"Path Normalize — workspace service"} 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Url Query — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: query string (without leading ?). Parse &-separated key/value pairs using first =, retain blank values and bare keys, decode + as space and percent-encoded UTF-8. Return object of decoded keys -> lists of values in source order. Empty segments ignored. Python urllib.parse.parse_qsl with keep_blank_values=True semantics.\nRequired input fields: query.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"query\": \"a=1&a=2&x=hello+world&empty=\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"a\": [\n \"1\",\n \"2\"\n ],\n \"x\": [\n \"hello world\"\n ],\n \"empty\": [\n \"\"\n ]\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"query\": \"\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {}\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"query\":\"a=1&a=2&x=hello+world&empty=\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"a\":[\"1\",\"2\"],\"empty\":[\"\"],\"x\":[\"hello world\"]}}},{\"request\":{\"input\":{\"query\":\"\"},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-044-url-query","timeout_seconds":10,"title":"Url Query — workspace service"} 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Version Sort — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: versions valid MAJOR.MINOR.PATCH optionally -prerelease.identifiers; no build metadata, numeric components/identifiers have no leading zeros. Sort by semantic version precedence: numeric core, prerelease before release, numeric prerelease identifiers numerically and before nonnumeric; nonnumeric ASCII lexical; shorter equal prefix first. Stable equal versions retained.\nRequired input fields: versions.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"versions\": [\n \"1.0.0\",\n \"1.0.0-beta\",\n \"1.0.0-alpha.10\",\n \"1.0.0-alpha.2\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"1.0.0-alpha.2\",\n \"1.0.0-alpha.10\",\n \"1.0.0-beta\",\n \"1.0.0\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"versions\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"versions\":[\"1.0.0\",\"1.0.0-beta\",\"1.0.0-alpha.10\",\"1.0.0-alpha.2\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[\"1.0.0-alpha.2\",\"1.0.0-alpha.10\",\"1.0.0-beta\",\"1.0.0\"]}},{\"request\":{\"input\":{\"versions\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-045-version-sort","timeout_seconds":10,"title":"Version Sort — workspace service"} 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"},{\"input\":{\"accesses\":[\"a\",\"a\",\"b\"],\"capacity\":1},\"op\":\"solve\"},{\"input\":{\"accesses\":[\"x\",\"y\",\"x\"],\"capacity\":9},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"hits\":1,\"keys\":[\"c\",\"b\"],\"misses\":4}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"accesses\":[\"a\",\"b\",\"a\",\"c\",\"b\"],\"capacity\":2},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"hits\":1,\"keys\":[\"c\",\"b\"],\"misses\":4}}],\"requests\":[{\"input\":{\"accesses\":[\"a\",\"b\",\"a\",\"c\",\"b\"]},\"op\":\"solve\"},{\"input\":{\"capacity\":2},\"op\":\"solve\"},{\"input\":{\"accesses\":[\"a\",\"b\",\"a\",\"c\",\"b\"],\"capacity\":2,\"ignored_extra\":{\"nested\":true}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/2928808\",\"revision\":1}},{\"ok\":true,\"result\":{\"hits\":1,\"keys\":[\"c\",\"b\"],\"misses\":4}},{\"ok\":true,\"result\":{\"key\":\"doc/2928808\",\"revision\":1,\"value\":{\"accesses\":[\"a\",\"b\",\"a\",\"c\",\"b\"],\"capacity\":2}}},{\"ok\":true,\"result\":{\"key\":\"doc/2928808\",\"revision\":2}},{\"ok\":true,\"result\":{\"hits\":1,\"keys\":[\"y\",\"x\"],\"misses\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/70217384\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/2928808\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/70217384\",\"revision\":3,\"value\":{\"accesses\":[\"a\",\"b\",\"a\",\"c\",\"b\"],\"capacity\":2}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/2928808\",\"op\":\"get\"},{\"key\":\"doc/2928808\",\"op\":\"put\",\"value\":{\"accesses\":[\"a\",\"b\",\"a\",\"c\",\"b\"],\"capacity\":2}},{\"key\":\"doc/2928808\",\"op\":\"evaluate\"},{\"key\":\"doc/2928808\",\"op\":\"get\"},{\"key\":\"doc/2928808\",\"op\":\"put\",\"value\":{\"accesses\":[\"x\",\"y\",\"x\"],\"capacity\":9}},{\"key\":\"doc/2928808\",\"op\":\"evaluate\"},{\"key\":\"doc/70217384\",\"op\":\"put\",\"value\":{\"accesses\":[\"a\",\"b\",\"a\",\"c\",\"b\"],\"capacity\":2}},{\"key\":\"doc/2928808\",\"op\":\"delete\"},{\"key\":\"doc/2928808\",\"op\":\"get\"},{\"key\":\"doc/2928808\",\"op\":\"delete\"},{\"key\":\"doc/70217384\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/50335036\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/70217384\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/2928808\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/2928808\",\"doc/70217384\",\"other/50335036\"]},{\"ok\":true,\"result\":[\"doc/2928808\",\"doc/70217384\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/50335036\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/70217384\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/50335036\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/50335036\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/70217384\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/2928808\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/50335036\",\"op\":\"get\"},{\"key\":\"other/50335036\",\"op\":\"evaluate\"},{\"key\":\"doc/2928808\",\"op\":\"evaluate\"},{\"key\":\"doc/70217384\",\"op\":\"get\"},{\"key\":\"other/50335036\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/2928808\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"systems","entrypoint":"main.py","family":"lru_trace","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Lru Trace — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: nonnegative capacity and accesses (string keys). Simulate initially empty LRU cache. Hit moves key to most recent. Miss inserts and evicts oldest if full. Capacity 0 stores nothing. Return {hits,misses,keys}, keys oldest to newest.\nRequired input fields: capacity, accesses.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"capacity\": 2,\n \"accesses\": [\n \"a\",\n \"b\",\n \"a\",\n \"c\",\n \"b\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"hits\": 1,\n \"misses\": 4,\n \"keys\": [\n \"c\",\n \"b\"\n ]\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"capacity\": 0,\n \"accesses\": [\n \"a\",\n \"a\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"hits\": 0,\n \"misses\": 2,\n \"keys\": []\n }\n }\n 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Rate Limit — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: events [{key:string,time:integer}] in nondecreasing time order, positive integer window, nonnegative limit. Per key, accept if fewer than limit previously accepted events have timestamps in (time-window,time]. Rejected events do not count. Process same-time events in input order. Return boolean decisions.\nRequired input fields: events, window, limit.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": [\n {\n \"key\": \"a\",\n \"time\": 0\n },\n {\n \"key\": \"a\",\n \"time\": 0\n },\n {\n \"key\": \"a\",\n \"time\": 1\n },\n {\n \"key\": \"a\",\n \"time\": 5\n }\n ],\n \"window\": 5,\n \"limit\": 2\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n true,\n true,\n false,\n true\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": [],\n \"window\": 1,\n \"limit\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"events\":[{\"key\":\"a\",\"time\":0},{\"key\":\"a\",\"time\":0},{\"key\":\"a\",\"time\":1},{\"key\":\"a\",\"time\":5}],\"limit\":2,\"window\":5},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[true,true,false,true]}},{\"request\":{\"input\":{\"events\":[],\"limit\":1,\"window\":1},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-047-rate-limit","timeout_seconds":10,"title":"Rate Limit — workspace service"} 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Priority Queue — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: events of {op:\"push\",priority:integer,value:JSON} or {op:\"pop\"}. Smaller priority first, FIFO ties. Pop empty produces null. Return {popped:list of pop results,remaining:list of queued values in pop order}.\nRequired input fields: events.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": [\n {\n \"op\": \"push\",\n \"priority\": 2,\n \"value\": \"a\"\n },\n {\n \"op\": \"push\",\n \"priority\": 1,\n \"value\": \"b\"\n },\n {\n \"op\": \"pop\"\n }\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"popped\": [\n \"b\"\n ],\n \"remaining\": [\n \"a\"\n ]\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"popped\": [],\n \"remaining\": []\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"events\":[{\"op\":\"push\",\"priority\":2,\"value\":\"a\"},{\"op\":\"push\",\"priority\":1,\"value\":\"b\"},{\"op\":\"pop\"}]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"popped\":[\"b\"],\"remaining\":[\"a\"]}}},{\"request\":{\"input\":{\"events\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"popped\":[],\"remaining\":[]}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-048-priority-queue","timeout_seconds":10,"title":"Priority Queue — workspace service"} 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Round Robin — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: jobs [{id:unique string,duration:positive integer}], positive integer quantum. All jobs arrive at 0 in input order. Repeatedly run first job min(remaining,quantum) time, append unfinished job to end. Return {slices:[{id,start,end}],completion:{id:completion time}}. Empty jobs gives empty structures.\nRequired input fields: jobs, quantum.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"jobs\": [\n {\n \"id\": \"a\",\n \"duration\": 3\n },\n {\n \"id\": \"b\",\n \"duration\": 2\n }\n ],\n \"quantum\": 2\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"slices\": [\n {\n \"id\": \"a\",\n \"start\": 0,\n \"end\": 2\n },\n {\n \"id\": \"b\",\n \"start\": 2,\n \"end\": 4\n },\n {\n \"id\": \"a\",\n \"start\": 4,\n \"end\": 5\n }\n ],\n \"completion\": {\n \"b\": 4,\n \"a\": 5\n }\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"jobs\": [],\n \"quantum\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"slices\": [],\n \"completion\": {}\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"jobs\":[{\"duration\":3,\"id\":\"a\"},{\"duration\":2,\"id\":\"b\"}],\"quantum\":2},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"completion\":{\"a\":5,\"b\":4},\"slices\":[{\"end\":2,\"id\":\"a\",\"start\":0},{\"end\":4,\"id\":\"b\",\"start\":2},{\"end\":5,\"id\":\"a\",\"start\":4}]}}},{\"request\":{\"input\":{\"jobs\":[],\"quantum\":1},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"completion\":{},\"slices\":[]}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-049-round-robin","timeout_seconds":10,"title":"Round Robin — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{\"a\":2,\"b\":8,\"c\":5}}},{\"ok\":true,\"result\":{\"rejected\":[1,4,7,8],\"stock\":{\"a\":0,\"c\":2}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{}}},{\"ok\":true,\"result\":{\"rejected\":[1,4,7,14],\"stock\":{\"a\":3,\"b\":2,\"c\":3}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{}}},{\"ok\":true,\"result\":{\"rejected\":[0],\"stock\":{\"a\":2,\"b\":0,\"c\":7}}},{\"ok\":true,\"result\":{\"rejected\":[1,2,3,10],\"stock\":{\"a\":8,\"b\":1,\"c\":5}}},{\"ok\":true,\"result\":{\"rejected\":[5,6,9],\"stock\":{\"a\":9,\"b\":0,\"c\":7}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{}}},{\"ok\":true,\"result\":{\"rejected\":[0],\"stock\":{\"a\":1,\"b\":13,\"c\":1}}},{\"ok\":true,\"result\":{\"rejected\":[4,9,10,12],\"stock\":{\"a\":0,\"b\":6,\"c\":6}}},{\"ok\":true,\"result\":{\"rejected\":[5,6],\"stock\":{\"b\":5,\"c\":6}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{\"a\":3,\"c\":0}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{\"a\":2,\"b\":2}}},{\"ok\":true,\"result\":{\"rejected\":[0,6,16],\"stock\":{\"a\":4,\"b\":14,\"c\":0}}},{\"ok\":true,\"result\":{\"rejected\":[0],\"stock\":{}}},{\"ok\":true,\"result\":{\"rejected\":[0,1,2,3,4,6,8],\"stock\":{\"a\":3,\"c\":5}}},{\"ok\":true,\"result\":{\"rejected\":[2,3,7],\"stock\":{\"a\":4,\"b\":12,\"c\":11}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{\"a\":3,\"c\":2}}},{\"ok\":true,\"result\":{\"rejected\":[0,2],\"stock\":{\"b\":4,\"c\":4}}},{\"ok\":true,\"result\":{\"rejected\":[4,6],\"stock\":{\"b\":15,\"c\":0}}},{\"ok\":true,\"result\":{\"rejected\":[2,3],\"stock\":{\"a\":4,\"b\":7,\"c\":8}}},{\"ok\":true,\"result\":{\"rejected\":[4,9,10,11,17],\"stock\":{\"b\":11,\"c\":10}}}],\"requests\":[{\"input\":{\"events\":[]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":5,\"sku\":\"c\"},{\"delta\":-1,\"sku\":\"c\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"b\"},{\"delta\":3,\"sku\":\"a\"},{\"delta\":-3,\"sku\":\"c\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"a\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":1,\"sku\":\"c\"},{\"delta\":-1,\"sku\":\"a\"},{\"delta\":4,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"},{\"delta\":-5,\"sku\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":3,\"sku\":\"c\"},{\"delta\":-4,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"c\"},{\"delta\":-5,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"a\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":5,\"sku\":\"a\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"a\"},{\"delta\":2,\"sku\":\"b\"},{\"delta\":-5,\"sku\":\"c\"},{\"delta\":-3,\"sku\":\"b\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":0,\"sku\":\"c\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":-1,\"sku\":\"a\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"a\"},{\"delta\":0,\"sku\":\"b\"},{\"delta\":2,\"sku\":\"a\"},{\"delta\":5,\"sku\":\"c\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-5,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"b\"},{\"delta\":-4,\"sku\":\"c\"},{\"delta\":4,\"sku\":\"b\"},{\"delta\":-3,\"sku\":\"b\"},{\"delta\":4,\"sku\":\"c\"},{\"delta\":5,\"sku\":\"a\"},{\"delta\":0,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"c\"},{\"delta\":-4,\"sku\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":5,\"sku\":\"c\"},{\"delta\":1,\"sku\":\"b\"},{\"delta\":-1,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"c\"},{\"delta\":1,\"sku\":\"c\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"},{\"delta\":5,\"sku\":\"a\"},{\"delta\":4,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":-3,\"sku\":\"c\"},{\"delta\":1,\"sku\":\"a\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"a\"},{\"delta\":5,\"sku\":\"c\"},{\"delta\":1,\"sku\":\"c\"},{\"delta\":2,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"b\"},{\"delta\":3,\"sku\":\"a\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"b\"},{\"delta\":-1,\"sku\":\"b\"},{\"delta\":-4,\"sku\":\"c\"},{\"delta\":-2,\"sku\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":0,\"sku\":\"a\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"c\"},{\"delta\":2,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"b\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":-2,\"sku\":\"a\"},{\"delta\":-3,\"sku\":\"c\"},{\"delta\":5,\"sku\":\"c\"},{\"delta\":-3,\"sku\":\"b\"},{\"delta\":-1,\"sku\":\"b\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":3,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":5,\"sku\":\"b\"},{\"delta\":-4,\"sku\":\"b\"},{\"delta\":4,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"c\"},{\"delta\":5,\"sku\":\"c\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":0,\"sku\":\"c\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":1,\"sku\":\"c\"},{\"delta\":-1,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":5,\"sku\":\"a\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":2,\"sku\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":-1,\"sku\":\"a\"},{\"delta\":0,\"sku\":\"a\"},{\"delta\":0,\"sku\":\"b\"},{\"delta\":4,\"sku\":\"b\"},{\"delta\":0,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"b\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":1,\"sku\":\"b\"},{\"delta\":4,\"sku\":\"c\"},{\"delta\":1,\"sku\":\"b\"},{\"delta\":4,\"sku\":\"a\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":1,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"c\"},{\"delta\":4,\"sku\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":-4,\"sku\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":-1,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"c\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-3,\"sku\":\"b\"},{\"delta\":5,\"sku\":\"c\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":3,\"sku\":\"a\"},{\"delta\":-5,\"sku\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":0,\"sku\":\"c\"},{\"delta\":2,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"b\"},{\"delta\":-4,\"sku\":\"c\"},{\"delta\":5,\"sku\":\"c\"},{\"delta\":-1,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"c\"},{\"delta\":-5,\"sku\":\"a\"},{\"delta\":-3,\"sku\":\"c\"},{\"delta\":1,\"sku\":\"b\"},{\"delta\":1,\"sku\":\"a\"},{\"delta\":1,\"sku\":\"a\"},{\"delta\":1,\"sku\":\"c\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":3,\"sku\":\"c\"},{\"delta\":1,\"sku\":\"b\"},{\"delta\":3,\"sku\":\"c\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":4,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"a\"},{\"delta\":0,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":-2,\"sku\":\"c\"},{\"delta\":4,\"sku\":\"c\"},{\"delta\":-2,\"sku\":\"a\"},{\"delta\":4,\"sku\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":2,\"sku\":\"b\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":0,\"sku\":\"b\"},{\"delta\":3,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"c\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":4,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"b\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"b\"},{\"delta\":0,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"c\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":4,\"sku\":\"c\"},{\"delta\":4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"b\"},{\"delta\":2,\"sku\":\"b\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":4,\"sku\":\"c\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":5,\"sku\":\"b\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":3,\"sku\":\"b\"},{\"delta\":-4,\"sku\":\"b\"},{\"delta\":-5,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"b\"},{\"delta\":5,\"sku\":\"b\"},{\"delta\":4,\"sku\":\"b\"},{\"delta\":-2,\"sku\":\"c\"},{\"delta\":-3,\"sku\":\"a\"},{\"delta\":-1,\"sku\":\"c\"},{\"delta\":-3,\"sku\":\"c\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":2,\"sku\":\"c\"},{\"delta\":0,\"sku\":\"c\"},{\"delta\":5,\"sku\":\"c\"},{\"delta\":-1,\"sku\":\"c\"},{\"delta\":-5,\"sku\":\"a\"},{\"delta\":2,\"sku\":\"c\"}]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"rejected\":[1],\"stock\":{\"a\":1}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{}}},{\"ok\":true,\"result\":{\"rejected\":[0],\"stock\":{}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{\"x\":0,\"y\":0}}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{\"\":1}}}],\"requests\":[{\"input\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":-1,\"sku\":\"x\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":0,\"sku\":\"x\"},{\"delta\":2,\"sku\":\"y\"},{\"delta\":-2,\"sku\":\"y\"}]},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":1,\"sku\":\"\"}]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"rejected\":[1],\"stock\":{\"a\":1}}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"rejected\":[1],\"stock\":{\"a\":1}}}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}],\"ignored_extra\":{\"nested\":true}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/35337853\",\"revision\":1}},{\"ok\":true,\"result\":{\"rejected\":[1],\"stock\":{\"a\":1}}},{\"ok\":true,\"result\":{\"key\":\"doc/35337853\",\"revision\":1,\"value\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}]}}},{\"ok\":true,\"result\":{\"key\":\"doc/35337853\",\"revision\":2}},{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{\"\":1}}},{\"ok\":true,\"result\":{\"key\":\"doc/8547123\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/35337853\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/8547123\",\"revision\":3,\"value\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/35337853\",\"op\":\"get\"},{\"key\":\"doc/35337853\",\"op\":\"put\",\"value\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}]}},{\"key\":\"doc/35337853\",\"op\":\"evaluate\"},{\"key\":\"doc/35337853\",\"op\":\"get\"},{\"key\":\"doc/35337853\",\"op\":\"put\",\"value\":{\"events\":[{\"delta\":1,\"sku\":\"\"}]}},{\"key\":\"doc/35337853\",\"op\":\"evaluate\"},{\"key\":\"doc/8547123\",\"op\":\"put\",\"value\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}]}},{\"key\":\"doc/35337853\",\"op\":\"delete\"},{\"key\":\"doc/35337853\",\"op\":\"get\"},{\"key\":\"doc/35337853\",\"op\":\"delete\"},{\"key\":\"doc/8547123\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/59608464\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/8547123\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/35337853\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/35337853\",\"doc/8547123\",\"other/59608464\"]},{\"ok\":true,\"result\":[\"doc/35337853\",\"doc/8547123\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/59608464\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/8547123\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/59608464\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/59608464\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/8547123\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/35337853\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/59608464\",\"op\":\"get\"},{\"key\":\"other/59608464\",\"op\":\"evaluate\"},{\"key\":\"doc/35337853\",\"op\":\"evaluate\"},{\"key\":\"doc/8547123\",\"op\":\"get\"},{\"key\":\"other/59608464\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/35337853\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"business","entrypoint":"main.py","family":"inventory_ledger","language":"python","num_assertions":82,"num_scenarios":8,"prompt":"# Inventory Ledger — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: events [{sku:string,delta:integer}]. Stock initially absent/zero. Apply in order, rejecting an event if stock would become negative; rejected events leave no state. Accepted events create the SKU even if delta=0. Return {stock:object,rejected:zero-based event indices}.\nRequired input fields: events.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": [\n {\n \"sku\": \"a\",\n \"delta\": 3\n },\n {\n \"sku\": \"a\",\n \"delta\": -4\n },\n {\n \"sku\": \"a\",\n \"delta\": -2\n }\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"stock\": {\n \"a\": 1\n },\n \"rejected\": [\n 1\n ]\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"stock\": {},\n \"rejected\": []\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"events\":[{\"delta\":3,\"sku\":\"a\"},{\"delta\":-4,\"sku\":\"a\"},{\"delta\":-2,\"sku\":\"a\"}]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"rejected\":[1],\"stock\":{\"a\":1}}}},{\"request\":{\"input\":{\"events\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"rejected\":[],\"stock\":{}}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-050-inventory-ledger","timeout_seconds":10,"title":"Inventory Ledger — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"balances\":{\"a\":21,\"b\":12},\"rejected\":[1,2,3,4,6,8]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":10,\"b\":21},\"rejected\":[0,1,5]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":5,\"b\":14},\"rejected\":[2,5,6,7,8]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":10,\"b\":6},\"rejected\":[0]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":1,\"b\":5},\"rejected\":[0]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":1,\"b\":3},\"rejected\":[0,1,2,3,4,5,6,7]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":11,\"b\":2},\"rejected\":[0,1,2,3]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":5,\"b\":10},\"rejected\":[4,6,8,9,10]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":9,\"b\":10},\"rejected\":[0,1,3,6]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":11,\"b\":5},\"rejected\":[0,1,2,3]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":12,\"b\":6},\"rejected\":[1,3,4,5]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":3,\"b\":11},\"rejected\":[2]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":6,\"b\":23},\"rejected\":[0,2,3,4,5,6,7,8,9,10]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":10,\"b\":8},\"rejected\":[0,1,2,5,6]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":9,\"b\":7},\"rejected\":[]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":9,\"b\":2},\"rejected\":[0,1,2,3]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":7,\"b\":0},\"rejected\":[1,3,4]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":11,\"b\":8},\"rejected\":[0,1,3,4]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":11,\"b\":18},\"rejected\":[0,2,4,7]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":5,\"b\":6},\"rejected\":[]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":7,\"b\":0},\"rejected\":[]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":15,\"b\":9},\"rejected\":[0,1]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":3,\"b\":11},\"rejected\":[1,2,4,5,6,8]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":7,\"b\":16},\"rejected\":[1,3,4,5,6,7,8,10]}}],\"requests\":[{\"input\":{\"balances\":{\"a\":19,\"b\":14},\"transfers\":[{\"amount\":3,\"from\":\"b\",\"to\":\"a\"},{\"amount\":1,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":2,\"from\":\"missing\",\"to\":\"b\"},{\"amount\":4,\"from\":\"missing\",\"to\":\"b\"},{\"amount\":2,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":8,\"from\":\"a\",\"to\":\"b\"},{\"amount\":3,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"b\",\"to\":\"a\"},{\"amount\":10,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":8,\"from\":\"b\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":12,\"b\":19},\"transfers\":[{\"amount\":4,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":8,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":6,\"from\":\"b\",\"to\":\"b\"},{\"amount\":5,\"from\":\"a\",\"to\":\"a\"},{\"amount\":2,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"missing\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":7,\"b\":12},\"transfers\":[{\"amount\":3,\"from\":\"b\",\"to\":\"b\"},{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":5,\"from\":\"b\",\"to\":\"a\"},{\"amount\":2,\"from\":\"a\",\"to\":\"a\"},{\"amount\":10,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":2,\"from\":\"missing\",\"to\":\"b\"},{\"amount\":2,\"from\":\"missing\",\"to\":\"missing\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":11,\"b\":5},\"transfers\":[{\"amount\":6,\"from\":\"b\",\"to\":\"a\"},{\"amount\":1,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":1,\"b\":5},\"transfers\":[{\"amount\":6,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":4,\"from\":\"b\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":1,\"b\":3},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":5,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":9,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":3,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":9,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":6,\"from\":\"missing\",\"to\":\"b\"},{\"amount\":11,\"from\":\"a\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":12,\"b\":1},\"transfers\":[{\"amount\":3,\"from\":\"b\",\"to\":\"a\"},{\"amount\":11,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":10,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":1,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":8,\"b\":7},\"transfers\":[{\"amount\":5,\"from\":\"a\",\"to\":\"b\"},{\"amount\":10,\"from\":\"b\",\"to\":\"b\"},{\"amount\":5,\"from\":\"b\",\"to\":\"a\"},{\"amount\":1,\"from\":\"a\",\"to\":\"b\"},{\"amount\":11,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":2,\"from\":\"a\",\"to\":\"b\"},{\"amount\":6,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":1,\"from\":\"a\",\"to\":\"a\"},{\"amount\":11,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":6,\"from\":\"missing\",\"to\":\"missing\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":9,\"b\":10},\"transfers\":[{\"amount\":10,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":11,\"from\":\"a\",\"to\":\"b\"},{\"amount\":2,\"from\":\"b\",\"to\":\"b\"},{\"amount\":5,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":9,\"from\":\"b\",\"to\":\"a\"},{\"amount\":2,\"from\":\"a\",\"to\":\"a\"},{\"amount\":1,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":9,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":11,\"b\":5},\"transfers\":[{\"amount\":5,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":9,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":8,\"from\":\"b\",\"to\":\"b\"},{\"amount\":11,\"from\":\"missing\",\"to\":\"missing\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":10,\"b\":8},\"transfers\":[{\"amount\":2,\"from\":\"b\",\"to\":\"a\"},{\"amount\":5,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":3,\"from\":\"a\",\"to\":\"a\"},{\"amount\":1,\"from\":\"missing\",\"to\":\"b\"},{\"amount\":1,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":6,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":6,\"from\":\"a\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":8,\"b\":6},\"transfers\":[{\"amount\":5,\"from\":\"a\",\"to\":\"b\"},{\"amount\":8,\"from\":\"b\",\"to\":\"b\"},{\"amount\":7,\"from\":\"missing\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":15,\"b\":14},\"transfers\":[{\"amount\":7,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":9,\"from\":\"a\",\"to\":\"b\"},{\"amount\":5,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":8,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":8,\"from\":\"a\",\"to\":\"a\"},{\"amount\":1,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":9,\"from\":\"a\",\"to\":\"b\"},{\"amount\":6,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":5,\"from\":\"missing\",\"to\":\"b\"},{\"amount\":7,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":11,\"b\":7},\"transfers\":[{\"amount\":5,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":3,\"from\":\"missing\",\"to\":\"b\"},{\"amount\":10,\"from\":\"a\",\"to\":\"a\"},{\"amount\":1,\"from\":\"a\",\"to\":\"b\"},{\"amount\":9,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":11,\"from\":\"b\",\"to\":\"missing\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":8,\"b\":8},\"transfers\":[{\"amount\":8,\"from\":\"a\",\"to\":\"b\"},{\"amount\":9,\"from\":\"b\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":9,\"b\":2},\"transfers\":[{\"amount\":3,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":9,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":11,\"from\":\"a\",\"to\":\"b\"},{\"amount\":7,\"from\":\"b\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":7,\"b\":0},\"transfers\":[{\"amount\":1,\"from\":\"a\",\"to\":\"a\"},{\"amount\":2,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"a\",\"to\":\"a\"},{\"amount\":5,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":8,\"from\":\"b\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":15,\"b\":4},\"transfers\":[{\"amount\":2,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":3,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"},{\"amount\":5,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":5,\"from\":\"missing\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":11,\"b\":18},\"transfers\":[{\"amount\":4,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":2,\"from\":\"a\",\"to\":\"a\"},{\"amount\":10,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":11,\"from\":\"a\",\"to\":\"a\"},{\"amount\":10,\"from\":\"missing\",\"to\":\"missing\"},{\"amount\":11,\"from\":\"b\",\"to\":\"b\"},{\"amount\":1,\"from\":\"b\",\"to\":\"b\"},{\"amount\":3,\"from\":\"b\",\"to\":\"missing\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":5,\"b\":6},\"transfers\":[]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":7,\"b\":0},\"transfers\":[]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":15,\"b\":9},\"transfers\":[{\"amount\":7,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":9,\"from\":\"missing\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":10,\"b\":4},\"transfers\":[{\"amount\":2,\"from\":\"b\",\"to\":\"b\"},{\"amount\":10,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":10,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":1,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":7,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":11,\"from\":\"b\",\"to\":\"b\"},{\"amount\":3,\"from\":\"a\",\"to\":\"missing\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":14,\"b\":9},\"transfers\":[{\"amount\":6,\"from\":\"a\",\"to\":\"b\"},{\"amount\":10,\"from\":\"a\",\"to\":\"a\"},{\"amount\":1,\"from\":\"a\",\"to\":\"b\"},{\"amount\":2,\"from\":\"b\",\"to\":\"missing\"},{\"amount\":8,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":3,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":5,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":2,\"from\":\"missing\",\"to\":\"a\"},{\"amount\":3,\"from\":\"a\",\"to\":\"missing\"},{\"amount\":5,\"from\":\"a\",\"to\":\"a\"},{\"amount\":10,\"from\":\"a\",\"to\":\"a\"}]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"balances\":{\"a\":3,\"b\":7},\"rejected\":[1]}},{\"ok\":true,\"result\":{\"balances\":{},\"rejected\":[]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":2},\"rejected\":[]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":3},\"rejected\":[0]}},{\"ok\":true,\"result\":{\"balances\":{\"a\":0},\"rejected\":[0]}}],\"requests\":[{\"input\":{\"balances\":{\"a\":10,\"b\":0},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{},\"transfers\":[]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":2},\"transfers\":[{\"amount\":2,\"from\":\"a\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":3},\"transfers\":[{\"amount\":1,\"from\":\"a\",\"to\":\"x\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":0},\"transfers\":[{\"amount\":1,\"from\":\"x\",\"to\":\"a\"}]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"balances\":{\"a\":3,\"b\":7},\"rejected\":[1]}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":10,\"b\":0},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"balances\":{\"a\":3,\"b\":7},\"rejected\":[1]}}],\"requests\":[{\"input\":{\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":10,\"b\":0}},\"op\":\"solve\"},{\"input\":{\"balances\":{\"a\":10,\"b\":0},\"ignored_extra\":{\"nested\":true},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/76647413\",\"revision\":1}},{\"ok\":true,\"result\":{\"balances\":{\"a\":3,\"b\":7},\"rejected\":[1]}},{\"ok\":true,\"result\":{\"key\":\"doc/76647413\",\"revision\":1,\"value\":{\"balances\":{\"a\":10,\"b\":0},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]}}},{\"ok\":true,\"result\":{\"key\":\"doc/76647413\",\"revision\":2}},{\"ok\":true,\"result\":{\"balances\":{\"a\":0},\"rejected\":[0]}},{\"ok\":true,\"result\":{\"key\":\"doc/81678478\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/76647413\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/81678478\",\"revision\":3,\"value\":{\"balances\":{\"a\":10,\"b\":0},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/76647413\",\"op\":\"get\"},{\"key\":\"doc/76647413\",\"op\":\"put\",\"value\":{\"balances\":{\"a\":10,\"b\":0},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]}},{\"key\":\"doc/76647413\",\"op\":\"evaluate\"},{\"key\":\"doc/76647413\",\"op\":\"get\"},{\"key\":\"doc/76647413\",\"op\":\"put\",\"value\":{\"balances\":{\"a\":0},\"transfers\":[{\"amount\":1,\"from\":\"x\",\"to\":\"a\"}]}},{\"key\":\"doc/76647413\",\"op\":\"evaluate\"},{\"key\":\"doc/81678478\",\"op\":\"put\",\"value\":{\"balances\":{\"a\":10,\"b\":0},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]}},{\"key\":\"doc/76647413\",\"op\":\"delete\"},{\"key\":\"doc/76647413\",\"op\":\"get\"},{\"key\":\"doc/76647413\",\"op\":\"delete\"},{\"key\":\"doc/81678478\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/45442235\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/81678478\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/76647413\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/76647413\",\"doc/81678478\",\"other/45442235\"]},{\"ok\":true,\"result\":[\"doc/76647413\",\"doc/81678478\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/45442235\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/81678478\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/45442235\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/45442235\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/81678478\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/76647413\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/45442235\",\"op\":\"get\"},{\"key\":\"other/45442235\",\"op\":\"evaluate\"},{\"key\":\"doc/76647413\",\"op\":\"evaluate\"},{\"key\":\"doc/81678478\",\"op\":\"get\"},{\"key\":\"other/45442235\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/76647413\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"business","entrypoint":"main.py","family":"bank_ledger","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Bank Ledger — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: balances (account -> nonnegative integer cents), transfers [{from,to,amount:positive integer}]. Reject missing accounts or insufficient source balance; otherwise subtract then add, including self-transfers. Return {balances,rejected:event indices}. Rejected transfers change nothing; never create accounts.\nRequired input fields: balances, transfers.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"balances\": {\n \"a\": 10,\n \"b\": 0\n },\n \"transfers\": [\n {\n \"from\": \"a\",\n \"to\": \"b\",\n \"amount\": 7\n },\n {\n \"from\": \"a\",\n \"to\": \"b\",\n \"amount\": 4\n }\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"balances\": {\n \"a\": 3,\n \"b\": 7\n },\n \"rejected\": [\n 1\n ]\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"balances\": {},\n \"transfers\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"balances\": {},\n \"rejected\": []\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"balances\":{\"a\":10,\"b\":0},\"transfers\":[{\"amount\":7,\"from\":\"a\",\"to\":\"b\"},{\"amount\":4,\"from\":\"a\",\"to\":\"b\"}]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"balances\":{\"a\":3,\"b\":7},\"rejected\":[1]}}},{\"request\":{\"input\":{\"balances\":{},\"transfers\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"balances\":{},\"rejected\":[]}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-051-bank-ledger","timeout_seconds":10,"title":"Bank Ledger — workspace service"} 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Ballot Count — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: candidates (unique strings), votes (strings). Count candidate votes, unrecognized votes invalid. Return {ranking:[{candidate,votes}],invalid}. Include zero-vote candidates. Rank by decreasing votes then ascending name.\nRequired input fields: candidates, votes.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"candidates\": [\n \"b\",\n \"a\",\n \"c\"\n ],\n \"votes\": [\n \"a\",\n \"b\",\n \"a\",\n \"x\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"ranking\": [\n {\n \"candidate\": \"a\",\n \"votes\": 2\n },\n {\n \"candidate\": \"b\",\n \"votes\": 1\n },\n {\n \"candidate\": \"c\",\n \"votes\": 0\n }\n ],\n \"invalid\": 1\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"candidates\": [],\n \"votes\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"ranking\": [],\n \"invalid\": 0\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"candidates\":[\"b\",\"a\",\"c\"],\"votes\":[\"a\",\"b\",\"a\",\"x\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"invalid\":1,\"ranking\":[{\"candidate\":\"a\",\"votes\":2},{\"candidate\":\"b\",\"votes\":1},{\"candidate\":\"c\",\"votes\":0}]}}},{\"request\":{\"input\":{\"candidates\":[],\"votes\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"invalid\":0,\"ranking\":[]}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-052-ballot-count","timeout_seconds":10,"title":"Ballot Count — workspace service"} 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Search Rank — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: documents [{id:unique string,text:string}], query string. Tokenize lowercase ASCII [a-z0-9]+. Score each document by total occurrence counts of distinct query tokens. Omit score=0 docs. Return [{id,score}] sorted by decreasing score then id.\nRequired input fields: documents, query.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"documents\": [\n {\n \"id\": \"b\",\n \"text\": \"red blue\"\n },\n {\n \"id\": \"a\",\n \"text\": \"red red\"\n },\n {\n \"id\": \"c\",\n \"text\": \"green\"\n }\n ],\n \"query\": \"RED red blue\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"id\": \"a\",\n \"score\": 2\n },\n {\n \"id\": \"b\",\n \"score\": 2\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"documents\": [],\n \"query\": \"x\"\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"documents\":[{\"id\":\"b\",\"text\":\"red blue\"},{\"id\":\"a\",\"text\":\"red red\"},{\"id\":\"c\",\"text\":\"green\"}],\"query\":\"RED red 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Log Summary — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: events [{level:string,message:string}]. Return {counts:level->count,errors:messages of exactly ERROR-level events in source order}. Levels are case-sensitive; include only encountered levels.\nRequired input fields: events.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": [\n {\n \"level\": \"INFO\",\n \"message\": \"start\"\n },\n {\n \"level\": \"ERROR\",\n \"message\": \"bad\"\n },\n {\n \"level\": \"ERROR\",\n \"message\": \"worse\"\n }\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"counts\": {\n \"INFO\": 1,\n \"ERROR\": 2\n },\n \"errors\": [\n \"bad\",\n \"worse\"\n ]\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"events\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"counts\": {},\n \"errors\": []\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"events\":[{\"level\":\"INFO\",\"message\":\"start\"},{\"level\":\"ERROR\",\"message\":\"bad\"},{\"level\":\"ERROR\",\"message\":\"worse\"}]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"counts\":{\"ERROR\":2,\"INFO\":1},\"errors\":[\"bad\",\"worse\"]}}},{\"request\":{\"input\":{\"events\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"counts\":{},\"errors\":[]}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-054-log-summary","timeout_seconds":10,"title":"Log Summary — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":0,\"up\":10}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":6,\"up\":4}},{\"ok\":true,\"result\":{\"down\":0,\"up\":10}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":0,\"up\":10}},{\"ok\":true,\"result\":{\"down\":0,\"up\":10}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":4,\"up\":6}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":9,\"up\":1}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}},{\"ok\":true,\"result\":{\"down\":10,\"up\":0}}],\"requests\":[{\"input\":{\"downtime\":[[-10,5],[-4,9],[8,10],[-2,3],[-2,3],[2,10],[-4,-3],[-6,-1],[-10,1]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-10,-6],[-10,6],[-2,8],[1,6]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-10,7],[1,8],[-6,8],[5,10],[-2,10],[-9,-3],[-9,4],[-5,-1]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[0,3],[4,9],[-8,-2],[-7,1],[7,10],[-6,10]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[3,9],[-8,-4],[-1,10],[-6,6],[7,8]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-3,9],[-7,-3],[-7,4],[-10,4],[-1,9],[2,7],[-8,1],[-9,1],[-10,-9]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-5,7],[4,9],[-4,7],[-1,9],[-6,0],[0,1]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-1,7],[5,7],[4,8],[-5,4],[3,7],[4,6],[-9,2],[-8,-6],[-4,4]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[2,7],[1,3],[-1,4]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-6,0],[5,6],[-9,-4],[-1,10],[-5,0],[-1,8],[5,10],[-2,2],[-2,3]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-4,10],[-6,5],[-7,7],[-8,3],[7,10],[7,7],[3,9],[-3,5]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[5,6]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[7,10],[-6,-5],[-4,-1],[-8,4],[3,3],[-9,9]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[2,2],[-10,-5],[5,7],[-5,1],[-8,-3],[-4,10],[-8,-3],[0,9]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[0,4]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-7,9],[0,3],[0,3],[-6,9],[-9,3],[-1,7],[-5,9]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-6,-2],[7,8],[0,4],[0,9],[7,8],[-3,2],[-5,3],[-6,8]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-5,5],[-2,4],[-2,3],[-8,1],[-5,4],[-6,4],[8,10]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-4,5]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-7,-5],[-9,5],[-3,1],[5,9],[-5,-3],[3,10],[4,6],[2,6],[-4,-3]],\"end\":5,\"start\":-5},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-6,9],[-10,7],[-10,3],[-8,-6],[1,10],[-2,-2],[-9,4],[-6,0]],\"end\":5,\"start\":-5},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"down\":7,\"up\":3}},{\"ok\":true,\"result\":{\"down\":0,\"up\":0}},{\"ok\":true,\"result\":{\"down\":0,\"up\":5}},{\"ok\":true,\"result\":{\"down\":5,\"up\":0}},{\"ok\":true,\"result\":{\"down\":0,\"up\":5}}],\"requests\":[{\"input\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"start\":0},\"op\":\"solve\"},{\"input\":{\"downtime\":[],\"end\":0,\"start\":0},\"op\":\"solve\"},{\"input\":{\"downtime\":[],\"end\":5,\"start\":0},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-10,10]],\"end\":5,\"start\":0},\"op\":\"solve\"},{\"input\":{\"downtime\":[[1,1],[5,8]],\"end\":5,\"start\":0},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"down\":7,\"up\":3}}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"start\":0},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"down\":7,\"up\":3}}],\"requests\":[{\"input\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"start\":0},\"op\":\"solve\"},{\"input\":{\"end\":10,\"start\":0},\"op\":\"solve\"},{\"input\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"ignored_extra\":{\"nested\":true},\"start\":0},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/25626745\",\"revision\":1}},{\"ok\":true,\"result\":{\"down\":7,\"up\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/25626745\",\"revision\":1,\"value\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"start\":0}}},{\"ok\":true,\"result\":{\"key\":\"doc/25626745\",\"revision\":2}},{\"ok\":true,\"result\":{\"down\":0,\"up\":5}},{\"ok\":true,\"result\":{\"key\":\"doc/42580478\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/25626745\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/42580478\",\"revision\":3,\"value\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"start\":0}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/25626745\",\"op\":\"get\"},{\"key\":\"doc/25626745\",\"op\":\"put\",\"value\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"start\":0}},{\"key\":\"doc/25626745\",\"op\":\"evaluate\"},{\"key\":\"doc/25626745\",\"op\":\"get\"},{\"key\":\"doc/25626745\",\"op\":\"put\",\"value\":{\"downtime\":[[1,1],[5,8]],\"end\":5,\"start\":0}},{\"key\":\"doc/25626745\",\"op\":\"evaluate\"},{\"key\":\"doc/42580478\",\"op\":\"put\",\"value\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"start\":0}},{\"key\":\"doc/25626745\",\"op\":\"delete\"},{\"key\":\"doc/25626745\",\"op\":\"get\"},{\"key\":\"doc/25626745\",\"op\":\"delete\"},{\"key\":\"doc/42580478\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/19738231\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/42580478\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/25626745\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/25626745\",\"doc/42580478\",\"other/19738231\"]},{\"ok\":true,\"result\":[\"doc/25626745\",\"doc/42580478\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/19738231\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/42580478\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/19738231\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/19738231\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/42580478\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/25626745\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/19738231\",\"op\":\"get\"},{\"key\":\"other/19738231\",\"op\":\"evaluate\"},{\"key\":\"doc/25626745\",\"op\":\"evaluate\"},{\"key\":\"doc/42580478\",\"op\":\"get\"},{\"key\":\"other/19738231\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/25626745\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"business","entrypoint":"main.py","family":"uptime_report","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Uptime Report — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: integer start<=end, downtime intervals [a,b] with a<=b. Clip to [start,end), merge overlaps, count duration without double-counting. Return {down,up}, up=end-start-down.\nRequired input fields: start, end, downtime.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"start\": 0,\n \"end\": 10,\n \"downtime\": [\n [\n -2,\n 3\n ],\n [\n 2,\n 5\n ],\n [\n 8,\n 12\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"down\": 7,\n \"up\": 3\n }\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"start\": 0,\n \"end\": 0,\n \"downtime\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": {\n \"down\": 0,\n \"up\": 0\n }\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"downtime\":[[-2,3],[2,5],[8,12]],\"end\":10,\"start\":0},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"down\":7,\"up\":3}}},{\"request\":{\"input\":{\"downtime\":[],\"end\":0,\"start\":0},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":{\"down\":0,\"up\":0}}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-055-uptime-report","timeout_seconds":10,"title":"Uptime Report — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":true}],\"requests\":[{\"input\":{\"a\":[3,-4],\"b\":[-1,1],\"c\":[1,-1],\"d\":[4,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[-2,4],\"c\":[-1,2],\"d\":[-4,4]},\"op\":\"solve\"},{\"input\":{\"a\":[1,4],\"b\":[-2,2],\"c\":[1,1],\"d\":[3,3]},\"op\":\"solve\"},{\"input\":{\"a\":[-2,-2],\"b\":[0,-3],\"c\":[3,-4],\"d\":[-4,4]},\"op\":\"solve\"},{\"input\":{\"a\":[4,-3],\"b\":[4,4],\"c\":[2,-3],\"d\":[0,1]},\"op\":\"solve\"},{\"input\":{\"a\":[2,-3],\"b\":[3,0],\"c\":[2,4],\"d\":[2,2]},\"op\":\"solve\"},{\"input\":{\"a\":[0,-1],\"b\":[-2,2],\"c\":[-4,-4],\"d\":[2,0]},\"op\":\"solve\"},{\"input\":{\"a\":[3,-2],\"b\":[-2,-1],\"c\":[-3,-4],\"d\":[-2,-2]},\"op\":\"solve\"},{\"input\":{\"a\":[2,0],\"b\":[-2,-4],\"c\":[0,2],\"d\":[2,3]},\"op\":\"solve\"},{\"input\":{\"a\":[0,3],\"b\":[-3,2],\"c\":[4,-1],\"d\":[-2,3]},\"op\":\"solve\"},{\"input\":{\"a\":[0,-2],\"b\":[-3,0],\"c\":[-2,-3],\"d\":[-1,-4]},\"op\":\"solve\"},{\"input\":{\"a\":[3,3],\"b\":[4,1],\"c\":[1,-1],\"d\":[0,1]},\"op\":\"solve\"},{\"input\":{\"a\":[1,3],\"b\":[1,-2],\"c\":[1,-1],\"d\":[0,-4]},\"op\":\"solve\"},{\"input\":{\"a\":[-4,3],\"b\":[4,4],\"c\":[-2,1],\"d\":[-2,4]},\"op\":\"solve\"},{\"input\":{\"a\":[0,3],\"b\":[-2,-1],\"c\":[-1,0],\"d\":[-4,-4]},\"op\":\"solve\"},{\"input\":{\"a\":[-3,3],\"b\":[1,1],\"c\":[2,-4],\"d\":[2,2]},\"op\":\"solve\"},{\"input\":{\"a\":[1,-1],\"b\":[-3,3],\"c\":[1,4],\"d\":[-1,-4]},\"op\":\"solve\"},{\"input\":{\"a\":[4,0],\"b\":[-4,-1],\"c\":[4,2],\"d\":[-3,-2]},\"op\":\"solve\"},{\"input\":{\"a\":[1,-2],\"b\":[2,1],\"c\":[-2,3],\"d\":[4,-2]},\"op\":\"solve\"},{\"input\":{\"a\":[0,-1],\"b\":[2,0],\"c\":[-2,-2],\"d\":[-2,4]},\"op\":\"solve\"},{\"input\":{\"a\":[-3,3],\"b\":[2,2],\"c\":[3,0],\"d\":[1,-1]},\"op\":\"solve\"},{\"input\":{\"a\":[3,-4],\"b\":[-3,-2],\"c\":[-1,-4],\"d\":[-4,2]},\"op\":\"solve\"},{\"input\":{\"a\":[1,-4],\"b\":[-2,-1],\"c\":[0,-1],\"d\":[4,2]},\"op\":\"solve\"},{\"input\":{\"a\":[3,-3],\"b\":[-3,1],\"c\":[4,-1],\"d\":[-4,1]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":false}],\"requests\":[{\"input\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[1,0],\"c\":[2,0],\"d\":[3,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[2,0],\"c\":[1,0],\"d\":[3,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[0,0],\"c\":[-1,0],\"d\":[1,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[0,1],\"c\":[0,1],\"d\":[1,1]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[0,0],\"c\":[1,1],\"d\":[1,1]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":true}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":true}],\"requests\":[{\"input\":{\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"c\":[0,2],\"d\":[2,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[2,2],\"d\":[2,0]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2]},\"op\":\"solve\"},{\"input\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0],\"ignored_extra\":{\"nested\":true}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/50358089\",\"revision\":1}},{\"ok\":true,\"result\":true},{\"ok\":true,\"result\":{\"key\":\"doc/50358089\",\"revision\":1,\"value\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]}}},{\"ok\":true,\"result\":{\"key\":\"doc/50358089\",\"revision\":2}},{\"ok\":true,\"result\":false},{\"ok\":true,\"result\":{\"key\":\"doc/59398748\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/50358089\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/59398748\",\"revision\":3,\"value\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/50358089\",\"op\":\"get\"},{\"key\":\"doc/50358089\",\"op\":\"put\",\"value\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]}},{\"key\":\"doc/50358089\",\"op\":\"evaluate\"},{\"key\":\"doc/50358089\",\"op\":\"get\"},{\"key\":\"doc/50358089\",\"op\":\"put\",\"value\":{\"a\":[0,0],\"b\":[0,0],\"c\":[1,1],\"d\":[1,1]}},{\"key\":\"doc/50358089\",\"op\":\"evaluate\"},{\"key\":\"doc/59398748\",\"op\":\"put\",\"value\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]}},{\"key\":\"doc/50358089\",\"op\":\"delete\"},{\"key\":\"doc/50358089\",\"op\":\"get\"},{\"key\":\"doc/50358089\",\"op\":\"delete\"},{\"key\":\"doc/59398748\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/22258698\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/59398748\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/50358089\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/50358089\",\"doc/59398748\",\"other/22258698\"]},{\"ok\":true,\"result\":[\"doc/50358089\",\"doc/59398748\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/22258698\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/59398748\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/22258698\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/22258698\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/59398748\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/50358089\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/22258698\",\"op\":\"get\"},{\"key\":\"other/22258698\",\"op\":\"evaluate\"},{\"key\":\"doc/50358089\",\"op\":\"evaluate\"},{\"key\":\"doc/59398748\",\"op\":\"get\"},{\"key\":\"other/22258698\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/50358089\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"geometry","entrypoint":"main.py","family":"segment_intersection","language":"python","num_assertions":86,"num_scenarios":8,"prompt":"# Segment Intersection — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: a,b,c,d each [integer x,integer y]. Return boolean whether closed segments ab and cd intersect, including collinear overlap, endpoint touches and degenerate point-segments. Coordinates magnitude <=100000.\nRequired input fields: a, b, c, d.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": [\n 0,\n 0\n ],\n \"b\": [\n 2,\n 2\n ],\n \"c\": [\n 0,\n 2\n ],\n \"d\": [\n 2,\n 0\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": true\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": [\n 0,\n 0\n ],\n \"b\": [\n 1,\n 0\n ],\n \"c\": [\n 2,\n 0\n ],\n \"d\": [\n 3,\n 0\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": false\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"a\":[0,0],\"b\":[2,2],\"c\":[0,2],\"d\":[2,0]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":true}},{\"request\":{\"input\":{\"a\":[0,0],\"b\":[1,0],\"c\":[2,0],\"d\":[3,0]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":false}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-056-segment-intersection","timeout_seconds":10,"title":"Segment Intersection — workspace service"} 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Polygon Area — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: points, ordered integer [x,y] vertices of a simple polygon (clockwise or counterclockwise), possibly empty or fewer than three points. Return nonnegative area by shoelace, implicitly close last to first. Degenerate polygon has zero area.\nRequired input fields: points.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"points\": [\n [\n 0,\n 0\n ],\n [\n 4,\n 0\n ],\n [\n 4,\n 3\n ],\n [\n 0,\n 3\n ]\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 12.0\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"points\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 0\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"points\":[[0,0],[4,0],[4,3],[0,3]]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":12.0}},{\"request\":{\"input\":{\"points\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":0}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-057-polygon-area","timeout_seconds":10,"title":"Polygon Area — workspace service"} 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\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[1,3],[2,5],[6,0],[7,2],[8,0]]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"buildings\":[[1,4,3],[2,6,5],[7,8,2]]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[1,3],[2,5],[6,0],[7,2],[8,0]]}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"buildings\":[[1,4,3],[2,6,5],[7,8,2]],\"ignored_extra\":{\"nested\":true}},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/32405804\",\"revision\":1}},{\"ok\":true,\"result\":[[1,3],[2,5],[6,0],[7,2],[8,0]]},{\"ok\":true,\"result\":{\"key\":\"doc/32405804\",\"revision\":1,\"value\":{\"buildings\":[[1,4,3],[2,6,5],[7,8,2]]}}},{\"ok\":true,\"result\":{\"key\":\"doc/32405804\",\"revision\":2}},{\"ok\":true,\"result\":[[-2,3],[0,0]]},{\"ok\":true,\"result\":{\"key\":\"doc/38134089\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/32405804\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/38134089\",\"revision\":3,\"value\":{\"buildings\":[[1,4,3],[2,6,5],[7,8,2]]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/32405804\",\"op\":\"get\"},{\"key\":\"doc/32405804\",\"op\":\"put\",\"value\":{\"buildings\":[[1,4,3],[2,6,5],[7,8,2]]}},{\"key\":\"doc/32405804\",\"op\":\"evaluate\"},{\"key\":\"doc/32405804\",\"op\":\"get\"},{\"key\":\"doc/32405804\",\"op\":\"put\",\"value\":{\"buildings\":[[-2,0,3],[-2,0,3]]}},{\"key\":\"doc/32405804\",\"op\":\"evaluate\"},{\"key\":\"doc/38134089\",\"op\":\"put\",\"value\":{\"buildings\":[[1,4,3],[2,6,5],[7,8,2]]}},{\"key\":\"doc/32405804\",\"op\":\"delete\"},{\"key\":\"doc/32405804\",\"op\":\"get\"},{\"key\":\"doc/32405804\",\"op\":\"delete\"},{\"key\":\"doc/38134089\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/59837994\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/38134089\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/32405804\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/32405804\",\"doc/38134089\",\"other/59837994\"]},{\"ok\":true,\"result\":[\"doc/32405804\",\"doc/38134089\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/59837994\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/38134089\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/59837994\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/59837994\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/38134089\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/32405804\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/59837994\",\"op\":\"get\"},{\"key\":\"other/59837994\",\"op\":\"evaluate\"},{\"key\":\"doc/32405804\",\"op\":\"evaluate\"},{\"key\":\"doc/38134089\",\"op\":\"get\"},{\"key\":\"other/59837994\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/32405804\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"geometry","entrypoint":"main.py","family":"skyline","language":"python","num_assertions":82,"num_scenarios":8,"prompt":"# Skyline — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: buildings [left,right,height], integer left=previous chosen end. Return chosen IDs. Intervals are half-open, negative times allowed.\nRequired input fields: tasks.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"tasks\": [\n {\n \"id\": \"a\",\n \"start\": 0,\n \"end\": 3\n },\n {\n \"id\": \"b\",\n \"start\": 1,\n \"end\": 2\n },\n {\n \"id\": \"c\",\n \"start\": 2,\n \"end\": 4\n }\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n \"b\",\n \"c\"\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"tasks\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"tasks\":[{\"end\":3,\"id\":\"a\",\"start\":0},{\"end\":2,\"id\":\"b\",\"start\":1},{\"end\":4,\"id\":\"c\",\"start\":2}]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[\"b\",\"c\"]}},{\"request\":{\"input\":{\"tasks\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-060-task-selection","timeout_seconds":10,"title":"Task Selection — workspace service"} 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Sequence Diff — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: a,b (lists of strings, length<=100). Produce minimal insert/delete edit script via longest common subsequence. If current tokens equal, emit [\"keep\",token] and advance both. Otherwise choose deletion when remaining LCS lengths tie; else choose operation retaining longer LCS. Emit [\"delete\",token] or [\"insert\",token]; process until both exhausted.\nRequired input fields: a, b.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": [\n \"a\",\n \"b\"\n ],\n \"b\": [\n \"b\",\n \"c\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n \"delete\",\n \"a\"\n ],\n [\n \"keep\",\n \"b\"\n ],\n [\n \"insert\",\n \"c\"\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"a\": [],\n \"b\": []\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"a\":[\"a\",\"b\"],\"b\":[\"b\",\"c\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[\"delete\",\"a\"],[\"keep\",\"b\"],[\"insert\",\"c\"]]}},{\"request\":{\"input\":{\"a\":[],\"b\":[]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-061-sequence-diff","timeout_seconds":10,"title":"Sequence Diff — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[false,false,false,false,false,false,false,false]},{\"ok\":true,\"result\":[false]},{\"ok\":true,\"result\":[false,false,false,false,false]},{\"ok\":true,\"result\":[true,true,true,true,true,true,true,true,true,true,true]},{\"ok\":true,\"result\":[true,true,true,true,true]},{\"ok\":true,\"result\":[false,false,false,false]},{\"ok\":true,\"result\":[true,true,true,true,true,true,true,true,true]},{\"ok\":true,\"result\":[false,false,false,false,false,false,false,false,true,true,true]},{\"ok\":true,\"result\":[false,false,false,false,false,false,false,false,false]},{\"ok\":true,\"result\":[false,false,false,false,false,false,false,false,false]},{\"ok\":true,\"result\":[true,true,true]},{\"ok\":true,\"result\":[false,true,false,false,false,false,false,true,false,true,false]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[false,false,false]},{\"ok\":true,\"result\":[false,false,true,false,false,false]},{\"ok\":true,\"result\":[false,false,true,false,true]},{\"ok\":true,\"result\":[false,false,false,false,false,false,false,false,false,false,false]},{\"ok\":true,\"result\":[false,false]},{\"ok\":true,\"result\":[true,false]},{\"ok\":true,\"result\":[false,true]},{\"ok\":true,\"result\":[true,false,true]},{\"ok\":true,\"result\":[false,false,false,false,false]},{\"ok\":true,\"result\":[false,false,false,true,false,true,false,true]},{\"ok\":true,\"result\":[]}],\"requests\":[{\"input\":{\"accepting\":[\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[\"xxyxyy\",\"xyyyyxyxy\",\"xyxy\",\"xxyxyy\",\"yxyy\",\"\",\"yyx\",\"yxxy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[\"xxyxxyxxy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"}],\"words\":[\"xyxxyy\",\"yxyyx\",\"yyx\",\"xyxyx\",\"xxxxyxyy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\",\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"}],\"words\":[\"yxy\",\"yxxx\",\"xy\",\"yx\",\"yyxxxxxyy\",\"xyxxxxx\",\"yyx\",\"xyyyyyyxx\",\"yxxyxxy\",\"xxyyxxyyx\",\"x\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\",\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"yxyxxxxxx\",\"y\",\"xxxxyxy\",\"xyyxxxxx\",\"xxyy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\",\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"}],\"words\":[\"xxyxxyy\",\"xyxyyxxyy\",\"xxyyx\",\"yxyxyy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[\"yxxx\",\"xxy\",\"yxx\",\"yxyyxy\",\"x\",\"yyx\",\"x\",\"xyxxyxxxy\",\"y\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\",\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"yyy\",\"yy\",\"yyyyxxx\",\"yxxxyx\",\"xxyyxxyxx\",\"xyyxxxx\",\"yxxyxyx\",\"xyyx\",\"\",\"\",\"xxx\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[\"xxyyyyx\",\"\",\"yyyxyx\",\"yyyxx\",\"xxyxx\",\"y\",\"yyxxyyxxy\",\"y\",\"xxyyxxxxy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"yxyy\",\"\",\"yxxxy\",\"yyyxx\",\"y\",\"yxxyyxx\",\"xyxxxyxyx\",\"y\",\"xxyyxyxx\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\",\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"xyyyxx\",\"\",\"yyyyyy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"xxx\",\"xyxy\",\"yyyxxy\",\"yx\",\"x\",\"xxyyx\",\"xxyxyxxyy\",\"xyxy\",\"xxxxyxx\",\"xxxxxy\",\"xxyy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[\"yxxyyx\",\"yxxxyxyxx\",\"xyx\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"yxyyyxxyy\",\"xyy\",\"yxy\",\"yyxxxyyy\",\"xyy\",\"\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"yyx\",\"yxxyxy\",\"\",\"yxxyyxyx\",\"yyy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"xyyyxxyxy\",\"yyyxy\",\"yx\",\"yy\",\"xxx\",\"y\",\"xy\",\"\",\"yyx\",\"xxy\",\"xyxyyyyxy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"xxxxyyy\",\"yxxxyy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[\"xyxx\",\"xxyyxy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\",\"b\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[\"x\",\"yy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"xxyxxyxy\",\"xxxyyxy\",\"\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"yyyx\",\"yxxyy\",\"yxxyxxxx\",\"yxy\",\"\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"a\",\"symbol\":\"y\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"a\"}],\"words\":[\"xxxyyxyyx\",\"yxxxyxxx\",\"yxxxxxxxx\",\"xyxyxy\",\"x\",\"yxy\",\"xyxyx\",\"yxy\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[],\"start\":\"a\",\"transitions\":[{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"y\",\"to\":\"b\"}],\"words\":[]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[true,false,true,false]},{\"ok\":true,\"result\":[false,false]},{\"ok\":true,\"result\":[true]},{\"ok\":true,\"result\":[true,false]},{\"ok\":true,\"result\":[]}],\"requests\":[{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[],\"start\":\"s\",\"transitions\":[],\"words\":[\"\",\"a\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"s\"],\"start\":\"s\",\"transitions\":[],\"words\":[\"\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"t\"],\"start\":\"s\",\"transitions\":[{\"from\":\"s\",\"symbol\":\"é\",\"to\":\"t\"}],\"words\":[\"é\",\"éé\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"s\"],\"start\":\"s\",\"transitions\":[],\"words\":[]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[true,false,true,false]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[true,false,true,false]}],\"requests\":[{\"input\":{\"accepting\":[\"a\"],\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]},\"op\":\"solve\"},{\"input\":{\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"words\":[\"\",\"x\",\"xx\",\"y\"]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}]},\"op\":\"solve\"},{\"input\":{\"accepting\":[\"a\"],\"ignored_extra\":{\"nested\":true},\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/60219052\",\"revision\":1}},{\"ok\":true,\"result\":[true,false,true,false]},{\"ok\":true,\"result\":{\"key\":\"doc/60219052\",\"revision\":1,\"value\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]}}},{\"ok\":true,\"result\":{\"key\":\"doc/60219052\",\"revision\":2}},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"doc/77023885\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/60219052\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/77023885\",\"revision\":3,\"value\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/60219052\",\"op\":\"get\"},{\"key\":\"doc/60219052\",\"op\":\"put\",\"value\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]}},{\"key\":\"doc/60219052\",\"op\":\"evaluate\"},{\"key\":\"doc/60219052\",\"op\":\"get\"},{\"key\":\"doc/60219052\",\"op\":\"put\",\"value\":{\"accepting\":[\"s\"],\"start\":\"s\",\"transitions\":[],\"words\":[]}},{\"key\":\"doc/60219052\",\"op\":\"evaluate\"},{\"key\":\"doc/77023885\",\"op\":\"put\",\"value\":{\"accepting\":[\"a\"],\"start\":\"a\",\"transitions\":[{\"from\":\"a\",\"symbol\":\"x\",\"to\":\"b\"},{\"from\":\"b\",\"symbol\":\"x\",\"to\":\"a\"}],\"words\":[\"\",\"x\",\"xx\",\"y\"]}},{\"key\":\"doc/60219052\",\"op\":\"delete\"},{\"key\":\"doc/60219052\",\"op\":\"get\"},{\"key\":\"doc/60219052\",\"op\":\"delete\"},{\"key\":\"doc/77023885\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/19401655\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/77023885\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/60219052\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/60219052\",\"doc/77023885\",\"other/19401655\"]},{\"ok\":true,\"result\":[\"doc/60219052\",\"doc/77023885\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/19401655\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/77023885\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/19401655\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/19401655\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/77023885\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/60219052\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/19401655\",\"op\":\"get\"},{\"key\":\"other/19401655\",\"op\":\"evaluate\"},{\"key\":\"doc/60219052\",\"op\":\"evaluate\"},{\"key\":\"doc/77023885\",\"op\":\"get\"},{\"key\":\"other/19401655\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/60219052\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"languages","entrypoint":"main.py","family":"finite_automaton","language":"python","num_assertions":85,"num_scenarios":8,"prompt":"# Finite Automaton — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: start (state string), accepting (state strings), transitions [{from,symbol,to}] with unique (from,symbol) and one-code-point symbols, words (strings). Simulate DFA separately per word. Missing transition rejects immediately. Return acceptance booleans. Empty word accepted iff start accepting.\nRequired input fields: start, accepting, transitions, words.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"start\": \"a\",\n \"accepting\": [\n \"a\"\n ],\n \"transitions\": [\n {\n \"from\": \"a\",\n \"symbol\": \"x\",\n \"to\": \"b\"\n },\n {\n \"from\": \"b\",\n \"symbol\": \"x\",\n \"to\": \"a\"\n }\n ],\n \"words\": [\n \"\",\n \"x\",\n \"xx\",\n \"y\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n true,\n false,\n true,\n false\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"start\": \"s\",\n \"accepting\": [],\n \"transitions\": [],\n \"words\": [\n \"\",\n \"a\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n false,\n false\n ]\n }\n 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Content Manifest — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: files (object of logical file path -> text). Do not read filesystem. Return [{path,bytes,sha256}] sorted by path; bytes is length of UTF-8 encoding and sha256 is lowercase hexadecimal SHA-256 of that encoding. No newline insertion or Unicode normalization.\nRequired input fields: files.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"files\": {\n \"empty\": \"\"\n }\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n {\n \"path\": \"empty\",\n \"bytes\": 0,\n \"sha256\": \"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855\"\n }\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"files\": {}\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"files\":{\"empty\":\"\"}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[{\"bytes\":0,\"path\":\"empty\",\"sha256\":\"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855\"}]}},{\"request\":{\"input\":{\"files\":{}},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-063-content-manifest","timeout_seconds":10,"title":"Content Manifest — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[[-3,0],[-3,1],[-2,-1],[-2,3],[-1,2],[0,-1],[1,3],[2,1],[3,2],[3,3]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[-3,1],[-3,2],[-2,-3],[-2,-2],[-2,3],[-1,-2],[-1,-1],[-1,3],[0,-1],[0,4],[1,1],[1,2],[1,3],[2,2],[2,3]]},{\"ok\":true,\"result\":[[-2,-2],[0,0],[2,1]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[-3,1],[0,-2],[1,0],[2,-2],[2,2],[3,2]]},{\"ok\":true,\"result\":[[-3,-1],[-2,0],[-2,2],[-1,2],[0,3],[1,-3],[1,-1],[1,1],[2,1],[3,-3],[3,-2],[3,3]]},{\"ok\":true,\"result\":[[2,1],[2,2],[3,1],[3,2]]},{\"ok\":true,\"result\":[[-4,1],[-3,0],[-3,1],[-3,2],[-2,0],[-2,1],[-2,3],[-1,2],[-1,3]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[-3,-1],[-3,0],[-3,1],[-2,2],[-2,3],[-1,-1],[-1,0],[-1,2],[-1,4],[0,0],[1,-2],[1,0],[2,-2],[2,0],[2,2],[2,4],[3,-1]]},{\"ok\":true,\"result\":[[-2,-2],[-2,0],[-1,0],[2,-3],[2,-1],[3,-2],[3,-1],[4,-2]]},{\"ok\":true,\"result\":[[-4,-3],[-4,-2],[-3,-3],[-3,-2],[-3,-1],[-2,-3],[-2,0],[-2,2],[-2,3],[-1,-3],[-1,0],[-1,2],[-1,3],[0,-2],[0,0],[0,1],[0,2],[0,4],[1,2],[1,4],[2,1],[2,2],[3,2],[3,3]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[-4,-1],[-4,0],[-2,-2],[-2,2],[-1,-2],[-1,2],[0,-2],[0,-1],[0,3],[1,0],[1,1],[1,2],[2,1]]},{\"ok\":true,\"result\":[[-2,-3],[-2,2],[0,-3],[3,1]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[2,2],[3,2]]},{\"ok\":true,\"result\":[[1,-3],[1,-2],[2,-3],[2,-2]]},{\"ok\":true,\"result\":[[-1,1],[-1,3],[0,-3],[0,3],[1,-2],[1,0],[1,1],[3,2]]},{\"ok\":true,\"result\":[[-4,2],[-3,-1],[-3,1],[-3,2],[-3,3],[-2,0],[-1,-1]]}],\"requests\":[{\"input\":{\"live\":[[-3,0],[2,1],[-1,2],[-2,3],[3,2],[-3,1],[-2,-1],[3,3],[0,-1],[1,3],[3,3]],\"steps\":0},\"op\":\"solve\"},{\"input\":{\"live\":[],\"steps\":3},\"op\":\"solve\"},{\"input\":{\"live\":[[-2,1],[-1,-2],[-2,-2],[-1,2],[-1,-3],[0,2],[1,3],[0,0],[0,1],[1,-2],[1,-1],[-2,-1],[0,-3],[-3,-2],[-1,0],[0,-1]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[0,0],[2,1],[-2,-2]],\"steps\":0},\"op\":\"solve\"},{\"input\":{\"live\":[[1,2]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[2,2],[-3,1],[3,2],[1,0],[2,-2],[0,-2],[2,2]],\"steps\":0},\"op\":\"solve\"},{\"input\":{\"live\":[[1,-1],[0,3],[1,1],[3,-3],[-2,0],[3,3],[-3,-1],[1,-3],[-2,2],[-1,2],[2,1],[3,-2]],\"steps\":0},\"op\":\"solve\"},{\"input\":{\"live\":[[3,2],[-2,1],[-2,-2],[0,-1],[3,1],[2,0],[2,2]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[-3,0],[-3,2],[-2,-3],[3,-1],[3,0],[-1,2],[-2,-2],[-3,2],[-2,2],[-3,1],[1,3],[-2,3],[3,-1],[3,3],[2,2]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[-3,1],[-1,0]],\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[[-2,0],[1,-3],[3,-1],[-3,2],[0,0],[1,0],[-3,3]],\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[[3,-3],[1,0],[-1,3],[-1,1],[3,3],[-2,1],[2,1],[-1,0],[1,3],[3,0],[-2,0],[0,-1],[2,2],[3,0],[2,2],[-2,-2],[1,2],[1,-1],[2,2]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[-1,-1],[-2,1],[-3,-3],[3,3],[1,-2],[2,-1],[3,-2],[3,-2],[-2,-1],[3,-1],[3,-3]],\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[[-1,0],[1,1],[3,-1],[-1,3],[2,3],[0,0],[-1,-3],[2,-1],[-2,-2],[1,3],[0,1],[0,3],[-3,-2],[-3,-1]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[2,-3],[0,1],[-3,-3],[2,3],[0,-2],[3,2],[1,-1],[3,1],[1,3],[2,-3]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[2,-1],[-3,3],[-3,-1],[-3,-3],[-1,-2],[-1,-2],[-2,0]],\"steps\":3},\"op\":\"solve\"},{\"input\":{\"live\":[[3,-3],[-2,1],[0,3],[-3,-3],[0,3],[-2,0],[2,1]],\"steps\":3},\"op\":\"solve\"},{\"input\":{\"live\":[[-1,2],[2,1],[-1,2],[0,-3],[1,1],[-3,1],[2,-1],[0,1],[-1,-2],[2,-1],[-2,-1],[2,3],[1,3],[-2,0],[-3,1],[-1,-2],[3,-3]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[0,-3],[-2,2],[-2,-3],[3,1]],\"steps\":0},\"op\":\"solve\"},{\"input\":{\"live\":[[-3,2],[-1,-3],[2,2],[2,1]],\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[[-2,3],[-2,3],[-1,3],[-3,-2],[2,-3],[3,1],[2,3],[2,2]],\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[[3,2],[1,-1],[-1,2],[-2,-3],[-3,3],[-2,3],[-3,1],[-1,3],[1,-3],[1,-1],[3,-3],[1,-1],[-2,3],[1,3],[2,2],[2,-2],[-2,-2]],\"steps\":4},\"op\":\"solve\"},{\"input\":{\"live\":[[1,1],[1,-2],[1,0],[0,3],[-1,1],[0,-3],[-1,3],[3,2]],\"steps\":0},\"op\":\"solve\"},{\"input\":{\"live\":[[-2,2],[-3,3],[-2,-2],[-1,0],[-3,1],[3,-2],[3,2],[2,1],[-1,0],[-1,0],[-2,0],[-2,2],[-1,2],[-3,2],[-3,-2]],\"steps\":1},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":[[-1,1],[0,1],[1,1]]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":[[0,0],[0,1],[1,0],[1,1]]},{\"ok\":true,\"result\":[[-1,0],[1,2]]},{\"ok\":true,\"result\":[[0,0],[0,1],[0,2]]}],\"requests\":[{\"input\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[],\"steps\":10},\"op\":\"solve\"},{\"input\":{\"live\":[[0,0]],\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[[0,0],[0,1],[1,0],[1,1]],\"steps\":5},\"op\":\"solve\"},{\"input\":{\"live\":[[1,2],[1,2],[-1,0]],\"steps\":0},\"op\":\"solve\"},{\"input\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":2},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[-1,1],[0,1],[1,1]]}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":1},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":[[-1,1],[0,1],[1,1]]}],\"requests\":[{\"input\":{\"steps\":1},\"op\":\"solve\"},{\"input\":{\"live\":[[0,0],[0,1],[0,2]]},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"live\":[[0,0],[0,1],[0,2]],\"steps\":1},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/36467953\",\"revision\":1}},{\"ok\":true,\"result\":[[-1,1],[0,1],[1,1]]},{\"ok\":true,\"result\":{\"key\":\"doc/36467953\",\"revision\":1,\"value\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":1}}},{\"ok\":true,\"result\":{\"key\":\"doc/36467953\",\"revision\":2}},{\"ok\":true,\"result\":[[0,0],[0,1],[0,2]]},{\"ok\":true,\"result\":{\"key\":\"doc/94115708\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/36467953\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/94115708\",\"revision\":3,\"value\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":1}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/36467953\",\"op\":\"get\"},{\"key\":\"doc/36467953\",\"op\":\"put\",\"value\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":1}},{\"key\":\"doc/36467953\",\"op\":\"evaluate\"},{\"key\":\"doc/36467953\",\"op\":\"get\"},{\"key\":\"doc/36467953\",\"op\":\"put\",\"value\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":2}},{\"key\":\"doc/36467953\",\"op\":\"evaluate\"},{\"key\":\"doc/94115708\",\"op\":\"put\",\"value\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":1}},{\"key\":\"doc/36467953\",\"op\":\"delete\"},{\"key\":\"doc/36467953\",\"op\":\"get\"},{\"key\":\"doc/36467953\",\"op\":\"delete\"},{\"key\":\"doc/94115708\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/39921183\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/94115708\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/36467953\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/36467953\",\"doc/94115708\",\"other/39921183\"]},{\"ok\":true,\"result\":[\"doc/36467953\",\"doc/94115708\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/39921183\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/94115708\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/39921183\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/39921183\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/94115708\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/36467953\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/39921183\",\"op\":\"get\"},{\"key\":\"other/39921183\",\"op\":\"evaluate\"},{\"key\":\"doc/36467953\",\"op\":\"evaluate\"},{\"key\":\"doc/94115708\",\"op\":\"get\"},{\"key\":\"other/39921183\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/36467953\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"simulation","entrypoint":"main.py","family":"cellular_automaton","language":"python","num_assertions":84,"num_scenarios":8,"prompt":"# Cellular Automaton — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: live (integer [row,column] pairs, duplicates ignored), steps (0..20). Simulate Conway Life on infinite 2D grid, eight neighbors: live survives with 2 or 3, dead born with 3. Return sorted unique live pairs lexicographically. Initial <=50 cells.\nRequired input fields: live, steps.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"live\": [\n [\n 0,\n 0\n ],\n [\n 0,\n 1\n ],\n [\n 0,\n 2\n ]\n ],\n \"steps\": 1\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": [\n [\n -1,\n 1\n ],\n [\n 0,\n 1\n ],\n [\n 1,\n 1\n ]\n ]\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"live\": [],\n \"steps\": 10\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": []\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"live\":[[0,0],[0,1],[0,2]],\"steps\":1},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[[-1,1],[0,1],[1,1]]}},{\"request\":{\"input\":{\"live\":[],\"steps\":10},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":[]}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-064-cellular-automaton","timeout_seconds":10,"title":"Cellular Automaton — workspace service"} {"acceptance_tests":"[{\"name\":\"generated-domain\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":-201},{\"ok\":true,\"result\":-40},{\"ok\":true,\"result\":11},{\"ok\":true,\"result\":2},{\"ok\":true,\"result\":-8},{\"ok\":true,\"result\":90},{\"ok\":true,\"result\":-10},{\"ok\":true,\"result\":-1},{\"ok\":true,\"result\":0},{\"ok\":true,\"result\":-1},{\"ok\":true,\"result\":-15},{\"ok\":true,\"result\":6},{\"ok\":true,\"result\":-5900},{\"ok\":true,\"result\":-57},{\"ok\":true,\"result\":-1479},{\"ok\":true,\"result\":326},{\"ok\":true,\"result\":-43},{\"ok\":true,\"result\":43},{\"ok\":true,\"result\":11},{\"ok\":true,\"result\":-8},{\"ok\":true,\"result\":-154},{\"ok\":true,\"result\":-21},{\"ok\":true,\"result\":-41},{\"ok\":true,\"result\":-11}],\"requests\":[{\"input\":{\"tokens\":[\"28\",\"-36\",\"*\",\"5\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-50\",\"72\",\"-\",\"3\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"19\",\"-73\",\"-\",\"8\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"6\",\"-2\",\"-\",\"4\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"33\",\"-67\",\"+\",\"4\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"90\",\"7\",\"*\",\"7\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-41\",\"-2\",\"+\",\"4\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"62\",\"75\",\"-\",\"8\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"27\",\"26\",\"-\",\"4\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-94\",\"92\",\"+\",\"2\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"1\",\"-16\",\"+\",\"1\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-27\",\"88\",\"+\",\"9\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"100\",\"-59\",\"*\",\"1\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-17\",\"27\",\"*\",\"8\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-87\",\"68\",\"*\",\"4\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-89\",\"-11\",\"*\",\"3\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-35\",\"-51\",\"+\",\"2\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"83\",\"47\",\"+\",\"3\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"87\",\"4\",\"-\",\"7\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-74\",\"8\",\"+\",\"8\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-84\",\"-70\",\"+\",\"1\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"14\",\"57\",\"-\",\"2\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-88\",\"5\",\"+\",\"2\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-44\",\"27\",\"-\",\"6\",\"/\"]},\"op\":\"solve\"}]}]},{\"name\":\"domain-boundaries\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":12},{\"ok\":true,\"result\":-2},{\"ok\":true,\"result\":-2},{\"ok\":true,\"result\":42},{\"ok\":true,\"result\":14},{\"ok\":true,\"result\":33333333333333333333}],\"requests\":[{\"input\":{\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"-7\",\"3\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"7\",\"-3\",\"/\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"42\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"2\",\"3\",\"4\",\"*\",\"+\"]},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"100000000000000000001\",\"3\",\"/\"]},\"op\":\"solve\"}]}]},{\"name\":\"protocol-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":12}],\"requests\":[\"{broken\",\"\",\"null\",\"[]\",\"42\",{},{\"op\":1},{\"op\":\"unknown\"},{\"op\":\"solve\"},{\"input\":[],\"op\":\"solve\"},{\"input\":{},\"op\":\"solve\"},{\"input\":{\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]},\"op\":\"solve\"}]}]},{\"name\":\"required-fields\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":12}],\"requests\":[{\"input\":{},\"op\":\"solve\"},{\"input\":{\"ignored_extra\":{\"nested\":true},\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]},\"op\":\"solve\"}]}]},{\"name\":\"document-lifecycle\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}},{\"ok\":true,\"result\":[]},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/2916487\",\"revision\":1}},{\"ok\":true,\"result\":12},{\"ok\":true,\"result\":{\"key\":\"doc/2916487\",\"revision\":1,\"value\":{\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]}}},{\"ok\":true,\"result\":{\"key\":\"doc/2916487\",\"revision\":2}},{\"ok\":true,\"result\":33333333333333333333},{\"ok\":true,\"result\":{\"key\":\"doc/60959275\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"doc/2916487\",\"revision\":4}},{\"error\":\"not_found\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/60959275\",\"revision\":3,\"value\":{\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]}}},{\"ok\":true,\"result\":{\"revision\":4,\"size\":1}}],\"requests\":[{\"op\":\"status\"},{\"op\":\"list\"},{\"key\":\"doc/2916487\",\"op\":\"get\"},{\"key\":\"doc/2916487\",\"op\":\"put\",\"value\":{\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]}},{\"key\":\"doc/2916487\",\"op\":\"evaluate\"},{\"key\":\"doc/2916487\",\"op\":\"get\"},{\"key\":\"doc/2916487\",\"op\":\"put\",\"value\":{\"tokens\":[\"100000000000000000001\",\"3\",\"/\"]}},{\"key\":\"doc/2916487\",\"op\":\"evaluate\"},{\"key\":\"doc/60959275\",\"op\":\"put\",\"value\":{\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]}},{\"key\":\"doc/2916487\",\"op\":\"delete\"},{\"key\":\"doc/2916487\",\"op\":\"get\"},{\"key\":\"doc/2916487\",\"op\":\"delete\"},{\"key\":\"doc/60959275\",\"op\":\"get\"},{\"op\":\"status\"}]}]},{\"name\":\"listing-and-json-values\",\"sessions\":[{\"expected\":[{\"ok\":true,\"result\":{\"key\":\"other/1805970\",\"revision\":1}},{\"ok\":true,\"result\":{\"key\":\"doc/60959275\",\"revision\":2}},{\"ok\":true,\"result\":{\"key\":\"doc/2916487\",\"revision\":3}},{\"ok\":true,\"result\":{\"key\":\"../é/😀\",\"revision\":4}},{\"ok\":true,\"result\":[\"../é/😀\",\"doc/2916487\",\"doc/60959275\",\"other/1805970\"]},{\"ok\":true,\"result\":[\"doc/2916487\",\"doc/60959275\"]},{\"ok\":true,\"result\":[]},{\"ok\":true,\"result\":{\"key\":\"other/1805970\",\"revision\":1,\"value\":null}},{\"error\":\"invalid_input\",\"ok\":false},{\"error\":\"invalid_input\",\"ok\":false},{\"ok\":true,\"result\":{\"key\":\"doc/60959275\",\"revision\":2,\"value\":[true,false,{\"x\":[1,null]}]}},{\"ok\":true,\"result\":{\"key\":\"other/1805970\",\"revision\":5}},{\"ok\":true,\"result\":{\"revision\":5,\"size\":4}}],\"requests\":[{\"key\":\"other/1805970\",\"op\":\"put\",\"value\":null},{\"key\":\"doc/60959275\",\"op\":\"put\",\"value\":[true,false,{\"x\":[1,null]}]},{\"key\":\"doc/2916487\",\"op\":\"put\",\"value\":{}},{\"key\":\"../é/😀\",\"op\":\"put\",\"value\":\"value\"},{\"op\":\"list\"},{\"op\":\"list\",\"prefix\":\"doc/\"},{\"op\":\"list\",\"prefix\":\"missing\"},{\"key\":\"other/1805970\",\"op\":\"get\"},{\"key\":\"other/1805970\",\"op\":\"evaluate\"},{\"key\":\"doc/2916487\",\"op\":\"evaluate\"},{\"key\":\"doc/60959275\",\"op\":\"get\"},{\"key\":\"other/1805970\",\"op\":\"put\",\"value\":null},{\"op\":\"status\"}]}]},{\"name\":\"store-errors\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"not_found\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"key\":\"\",\"op\":\"put\",\"value\":1},{\"key\":\"doc/2916487\",\"op\":\"put\"},{\"key\":1,\"op\":\"put\",\"value\":null},{\"op\":\"get\"},{\"key\":[],\"op\":\"delete\"},{\"op\":\"list\",\"prefix\":null},{\"key\":\"missing\",\"op\":\"evaluate\"},{\"op\":\"status\"}]}]},{\"name\":\"unsupported-transactions\",\"sessions\":[{\"expected\":[{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"error\":\"invalid_request\",\"ok\":false},{\"ok\":true,\"result\":{\"revision\":0,\"size\":0}}],\"requests\":[{\"op\":\"begin\"},{\"commands\":[],\"op\":\"batch\"},{\"op\":\"history\"},{\"op\":\"status\"}]}]}]","category":"languages","entrypoint":"main.py","family":"expression_eval","language":"python","num_assertions":83,"num_scenarios":8,"prompt":"# Expression Eval — workspace service\n\nBuild a complete project from an EMPTY directory, using Python 3.11+ and only the standard library. Create main.py as the entry point; any number of supporting files is allowed. No starter implementation is provided.\nRun: python main.py (max-tier invocation adds --state-dir DIRECTORY).\nRead one JSON object per stdin line, write exactly one JSON response per request line, flush it immediately, and continue after an error. No banners or diagnostics on stdout. EOF exits cleanly. Values are finite JSON; object key order is irrelevant, array order matters. Float results use tolerance 1e-9 (absolute or relative). Do not read any benchmark/evaluator files.\nSuccess response: {\"ok\":true,\"result\":RESULT}. Error response: {\"ok\":false,\"error\":CODE} with no extra fields.\nEvery tier supports {\"op\":\"solve\",\"input\":OBJECT}. Compute the domain result specified below without changing workspace state. input must be an object containing all required domain fields; otherwise error invalid_input. Other domain constraints are guarantees about supplied inputs, not additional validation requirements.\nMalformed JSON, a nonobject request, a missing/nonstring op, missing/mistyped command fields, or an unavailable/unknown operation: invalid_request. An empty or whitespace-only line is malformed JSON and receives invalid_request. Ignore extra command fields except the max-tier token field. Domain input fields beyond required ones are ignored.\nKeys are arbitrary nonempty strings (Unicode and / allowed), never filesystem paths. Each fresh evaluation scenario starts empty. An error changes no state. Commands are sequential, one client; concurrency is not required.\n\nAlso implement an in-memory document workspace, initially empty, shared across request lines:\n* {\"op\":\"put\",\"key\":K,\"value\":V}: store any JSON value (including null), replacing if present. Each successful put increments global revision by 1, even if unchanged. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}.\n* {\"op\":\"get\",\"key\":K}: result {\"key\":K,\"value\":STORED_VALUE,\"revision\":REVISION_OF_LAST_PUT_FOR_K}. Missing key: not_found.\n* {\"op\":\"delete\",\"key\":K}: delete existing key and increment global revision by 1. Result {\"key\":K,\"revision\":NEW_GLOBAL_REVISION}. Missing key: not_found, no increment.\n* {\"op\":\"list\",\"prefix\":P}: result sorted list of keys starting with P; prefix optional, defaults \"\", must be a string.\n* {\"op\":\"evaluate\",\"key\":K}: solve the stored document as domain input without modifying it. Missing key: not_found; nonobject or missing required domain fields: invalid_input.\n* {\"op\":\"status\"}: result {\"revision\":GLOBAL_REVISION,\"size\":NUMBER_OF_KEYS}. Reads never increment revision. Global revision begins at 0. Deep JSON values must not alias or be mutated by computation.\n\nDomain contract:\nInput: tokens, a valid postfix integer expression as strings with binary operators +,-,*,/. Return integer result. Division truncates toward zero, including negative operands; all divisors nonzero. Other tokens are signed base-10 integers. All intermediate magnitudes <=2^100; expression leaves exactly one value.\nRequired input fields: tokens.\n\nExamples:\n[\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"tokens\": [\n \"5\",\n \"2\",\n \"-\",\n \"4\",\n \"*\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": 12\n }\n },\n {\n \"request\": {\n \"op\": \"solve\",\n \"input\": {\n \"tokens\": [\n \"-7\",\n \"3\",\n \"/\"\n ]\n }\n },\n \"response\": {\n \"ok\": true,\n \"result\": -2\n }\n }\n]","protocol_version":"1.0","public_tests":"[{\"request\":{\"input\":{\"tokens\":[\"5\",\"2\",\"-\",\"4\",\"*\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":12}},{\"request\":{\"input\":{\"tokens\":[\"-7\",\"3\",\"/\"]},\"op\":\"solve\"},\"response\":{\"ok\":true,\"result\":-2}}]","subset":"intermediate","target_model_parameters":"8–16B","task_id":"kcb-intermediate-065-expression-eval","timeout_seconds":10,"title":"Expression Eval — workspace service"}