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"content": "import re\nfrom datetime import datetime, timedelta, timezone\n\n_WEEKDAYS = (\"Mon\", \"Tue\", \"Wed\", \"Thu\", \"Fri\", \"Sat\", \"Sun\")\n\n_MONTHS = {\n \"Jan\": 1,\n \"Feb\": 2,\n \"Mar\": 3,\n \"Apr\": 4,\n \"May\": 5,\n \"Jun\": 6,\n \"Jul\": 7,\n \"Aug\": 8,\n \"Sep\": 9,\n \"Oct\": 10,\n \"Nov\": 11,\n \"Dec\": 12,\n}\n\n_HTTP_DATE_RE = re.compile(\n r\"(Mon|Tue|Wed|Thu|Fri|Sat|Sun), \"\n r\"([0-9]{2}) \"\n r\"(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) \"\n r\"([0-9]{4}) \"\n r\"([0-9]{2}):([0-9]{2}):([0-9]{2}) GMT\"\n)\n\n\ndef _ascii_decimal_only(value):\n return all(\"0\" <= ch <= \"9\" for ch in value)\n\n\ndef _digits_to_int(value):\n try:\n return int(value)\n except ValueError:\n result = 0\n chunk_size = 9\n for i in range(0, len(value), chunk_size):\n chunk = value[i:i + chunk_size]\n result = result * (10 ** len(chunk)) + int(chunk)\n return result\n\n\ndef retry_after(value, now):\n \"\"\"Parse an HTTP Retry-After header according to the task contract.\"\"\"\n if not isinstance(value, str):\n return None\n\n value = value.strip()\n if not value:\n return None\n\n if _ascii_decimal_only(value):\n return _digits_to_int(value)\n\n match = _HTTP_DATE_RE.fullmatch(value)\n if match is None:\n return None\n\n dow_name, day, month_name, year, hour, minute, second = match.groups()\n\n try:\n parsed = datetime(\n int(year),\n _MONTHS[month_name],\n int(day),\n int(hour),\n int(minute),\n int(second),\n tzinfo=timezone.utc,\n )\n except ValueError:\n return None\n\n if _WEEKDAYS[parsed.weekday()] != dow_name:\n return None\n\n try:\n delta = parsed - now\n except (TypeError, ValueError, OverflowError):\n return None\n\n if delta <= timedelta(0):\n return 0\n\n seconds = delta.days * 86400 + delta.seconds\n if delta.microseconds > 0:\n seconds += 1\n\n return seconds\n", "contentRedacted": false, "publishedContentSha256": "284b2aaebe83aceb670d58e6c09de64c07363dea48e9651d1649fb46ae380589" } ], "disclosure": "Synthetic inputs and observed execution. Original-byte hashes retained; selected source and oracle outputs reproduced. Private provider transcripts remain local.", "reviewedEvidence": { "provenance": "Synthetic test input; actual installed CLI execution; reviewed public-safe evidence fixture.", "runId": "20261016T124951Z_aider_byok_qwen_qwen3.8-flash_d64870", "task": "Synthetic benchmark task: Retry-After parsing. Implement `retry_after(value, now)` in solution.py using only Python standard library. now is an aware UTC datetime. Return a nonnegative integer number of seconds or None for invalid input. Strings containing only ASCII decimal digits after surrounding whitespace return that integer. Otherwise accept an RFC HTTP-date of form `Wed, 21 Oct 2015 07:28:00 GMT`, case sensitive, validated weekday must agree with date. For a valid HTTP date return max(0, ceil((date-now).total_seconds())). Reject non-string inputs, signs, fractions, non-ASCII digits, extra text, and non-GMT timezone names. Do not change any other source file. Hidden tests are unavailable. Write the implementation to disk and finish. Do not install dependencies, access network, use other models, or edit unrelated paths.\n", "freeze": { "task_sha256": "6c229fd3a8dda211432b4ff70838fa0cb73b325bc778da52ab0cdd280619a5fe", "oracle_sha256": "3675736119622cac168d711045426c6678bd08212b9bedf1aab71126a7ef1a76", "starter_sha256": "595a2a41e7bfd09ad28045cb3be95f0126d702eb25e6f53c723c0b77c46b44e2", "frozen_before_execution_at": 1792154991.377455 }, "candidateCode": "import re\nfrom datetime import datetime, timedelta, timezone\n\n_WEEKDAYS = (\"Mon\", \"Tue\", \"Wed\", \"Thu\", \"Fri\", \"Sat\", \"Sun\")\n\n_MONTHS = {\n \"Jan\": 1,\n \"Feb\": 2,\n \"Mar\": 3,\n \"Apr\": 4,\n \"May\": 5,\n \"Jun\": 6,\n \"Jul\": 7,\n \"Aug\": 8,\n \"Sep\": 9,\n \"Oct\": 10,\n \"Nov\": 11,\n \"Dec\": 12,\n}\n\n_HTTP_DATE_RE = re.compile(\n r\"(Mon|Tue|Wed|Thu|Fri|Sat|Sun), \"\n r\"([0-9]{2}) \"\n r\"(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) \"\n r\"([0-9]{4}) \"\n r\"([0-9]{2}):([0-9]{2}):([0-9]{2}) GMT\"\n)\n\n\ndef _ascii_decimal_only(value):\n return all(\"0\" <= ch <= \"9\" for ch in value)\n\n\ndef _digits_to_int(value):\n try:\n return int(value)\n except ValueError:\n result = 0\n chunk_size = 9\n for i in range(0, len(value), chunk_size):\n chunk = value[i:i + chunk_size]\n result = result * (10 ** len(chunk)) + int(chunk)\n return result\n\n\ndef retry_after(value, now):\n \"\"\"Parse an HTTP Retry-After header according to the task contract.\"\"\"\n if not isinstance(value, str):\n return None\n\n value = value.strip()\n if not value:\n return None\n\n if _ascii_decimal_only(value):\n return _digits_to_int(value)\n\n match = _HTTP_DATE_RE.fullmatch(value)\n if match is None:\n return None\n\n dow_name, day, month_name, year, hour, minute, second = match.groups()\n\n try:\n parsed = datetime(\n int(year),\n _MONTHS[month_name],\n int(day),\n int(hour),\n int(minute),\n int(second),\n tzinfo=timezone.utc,\n )\n except ValueError:\n return None\n\n if _WEEKDAYS[parsed.weekday()] != dow_name:\n return None\n\n try:\n delta = parsed - now\n except (TypeError, ValueError, OverflowError):\n return None\n\n if delta <= timedelta(0):\n return 0\n\n seconds = delta.days * 86400 + delta.seconds\n if delta.microseconds > 0:\n seconds += 1\n\n return seconds\n", "oracle": { "passed": 20, "total": 20, "cases": [ { "input": "0", "expected": 0, "actual": 0, "pass": true }, { "input": " 120\t", "expected": 120, "actual": 120, "pass": true }, { "input": "0007", "expected": 7, "actual": 7, "pass": true }, { "input": "-1", "expected": null, "actual": null, "pass": true }, { "input": "+1", "expected": null, "actual": null, "pass": true }, { "input": "1.5", "expected": null, "actual": null, "pass": true }, { "input": "１２", "expected": null, "actual": null, "pass": true }, { "input": "١٢", "expected": null, "actual": null, "pass": true }, { "input": "", "expected": null, "actual": null, "pass": true }, { "input": null, "expected": null, "actual": null, "pass": true }, { "input": 4, "expected": null, "actual": null, "pass": true }, { "input": "Wed, 21 Oct 2015 07:28:00 GMT", "expected": 1, "actual": 1, "pass": true }, { "input": "Wed, 21 Oct 2015 07:28:01 GMT", "expected": 2, "actual": 2, "pass": true }, { "input": "Wed, 21 Oct 2015 07:27:00 GMT", "expected": 0, "actual": 0, "pass": true }, { "input": "Tue, 21 Oct 2015 07:28:00 GMT", "expected": null, "actual": null, "pass": true }, { "input": "Wed, 21 Oct 2015 07:28:00 UTC", "expected": null, "actual": null, "pass": true }, { "input": "wed, 21 Oct 2015 07:28:00 GMT", "expected": null, "actual": null, "pass": true }, { "input": "Wed, 31 Feb 2015 07:28:00 GMT", "expected": null, "actual": null, "pass": true }, { "input": "Wed, 21 Oct 2015 07:28:00 GMT trailing", "expected": null, "actual": null, "pass": true }, { "input": "Wed, 21 Oct 2015 07:28:00 +0000", "expected": null, "actual": null, "pass": true } ] }, "providerCalls": [ { "requestEvidence": "artifacts/agent_comparison_completion_repair_20261016/matrix/20261016T124951Z_aider_byok_qwen_qwen3.8-flash_d64870/d8690b55c3b74896a3259bd3449dd67d.request.json", "requestSha256": "dff63f4ce6de2d1b40003cfcbf795a85e7ef6f34ec0195c7b0649a09ccb5d3f0", "responseSha256": "be63ae11f8456a19fd87e71d6bdc0efe889cd947c28dd1c0674bdbf6bd83d9ed", "httpStatus": 200, "requestedModel": "byok/qwen/qwen3.8-flash", "resolvedModel": "byok/qwen/qwen3.8-flash", "backendModel": "qwen/qwen3.8-flash", "resolutionSource": "explicit_byok_route", "generationControls": { "max_tokens": 8192, "temperature": 0, "reasoning_choice": { "mode": "default" }, "auto_failover": false, "stream": true }, "inputTokens": 934, "outputTokens": 10463, "totalTokens": 11397, "costUsd": 0.00505771, "energyWh": null, "finishReasons": [ "stop" ], "additiveReasoningTokens": null, "nestedReasoningTokens": 9814 } ], "gatewayBefore": { "status": "healthy", "service": "local_gateway", "mode": "full", "port": 6120, "timestamp": "2026-10-16T12:49:51.459470+00:00", "uptime_seconds": 1000.7704999446869, "server_start_time": 1792153990.688971, "git_sha": "a5d8f6a1c4fc2bd9144502167f3eaa8461dcfc25", "build_time": "2026-10-16T08:32:43-04:00", "version": "a5d8f6a1c4fc2bd9144502167f3eaa8461dcfc25", "interop_min": 1, "interop_max": 1, "dependencies": { "event_stream": "http://localhost:6102" }, "lightrag": { "enabled": true, "status": "online", "files_indexed": 8020, "url": "http://127.0.0.1:6150" }, "cloud_relay": { "connected": true, "authenticated": true }, "context_status": { "summary": "ok", "target_context": 65536, "providers": [ { "provider": "ollama", "status": "ok", "actual_context": 131072, "target_context": 65536, "model": "deepseek-r1:7b" }, { "provider": "lmstudio", "status": "ok", "actual_context": 262144, "target_context": 65536, "model": "verdict-4-35b-toolterse-v5-mlx" }, { "provider": "llamacpp", "status": "context_unknown", "actual_context": null, "target_context": 65536, "model": null } ] } }, "gatewayAfter": { "status": "healthy", "service": "local_gateway", "mode": "full", "port": 6120, "timestamp": "2026-10-16T12:53:32.757778+00:00", "uptime_seconds": 1222.0688099861145, "server_start_time": 1792153990.688971, "git_sha": "a5d8f6a1c4fc2bd9144502167f3eaa8461dcfc25", "build_time": "2026-10-16T08:32:43-04:00", "version": "a5d8f6a1c4fc2bd9144502167f3eaa8461dcfc25", "interop_min": 1, "interop_max": 1, "dependencies": { "event_stream": "http://localhost:6102" }, "lightrag": { "enabled": true, "status": "online", "files_indexed": 8020, "url": "http://127.0.0.1:6150" }, "cloud_relay": { "connected": true, "authenticated": true }, "context_status": { "summary": "ok", "target_context": 65536, "providers": [ { "provider": "ollama", "status": "ok", "actual_context": 131072, "target_context": 65536, "model": "deepseek-r1:7b" }, { "provider": "lmstudio", "status": "ok", "actual_context": 262144, "target_context": 65536, "model": "verdict-4-35b-toolterse-v5-mlx" }, { "provider": "llamacpp", "status": "context_unknown", "actual_context": null, "target_context": 65536, "model": null } ] } }, "rawArtifacts": "artifacts/agent_comparison_completion_repair_20261016/matrix/20261016T124951Z_aider_byok_qwen_qwen3.8-flash_d64870", "rawResultSha256": "d6cc36eeea14c517cc863147e720fce5881a2d2d483f5c594d56edd245de3741", "rawEvidenceHashes": { "health_before.json": "83ae25dc8d55204fd40a22c64f83ca26a81cad406585a37f94f77ec4326ee9a4", "stdout.txt": "c76f177857d27f1b17dbb88edd589392b323dc38eb2a4776252964053384f207", "policy.json": "3163bbcc22b8d5d499225c93837b6be7a119a160855c41ab97209f56c997537d", "health_after.json": "c5445dc2e0b79ed87642a09deb77f03f6704cd4eddcdc4618ef9923354bbd4f3", "model_preflight.json": "7183c4f9fe5dff10e46562c7c992d7be725eafcc070afd4c51a947c3a46847f8", "sandbox_preflight.json": "8415d156075475eba2b82a04636f833e85484020de5e6424f6140cd0ac61390f", "budget_ledger_at_terminal.json": "413d9196de33caef272d5080d6a8611e2eb0d79bb7cb925f27479610efe557b2", 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160000, "total_token_budget": 400000, "max_turns": 24, "proxy_read_timeout_seconds": 270, "verdict_stream_idle_timeout_seconds": 240, "aider_request_timeout_seconds": 240, "reasoning": { "mode": "default" }, "models": "exact pins, no failover", "task_file": "solution.py", "hidden_oracle_fed_to_agent": false, "producer_location": "outside candidate workspace; candidate read denied", "aider_context": "live exact catalog context metadata; history ceiling=min(inputbudget,context/2)", "appendix_model_changed": true }, "catalogCostEstimate": { "estimatedUsd": 0.00505771, "inputUsdPerMtok": 0.15, "outputUsdPerMtok": 0.47, "source": "model-selection/selection.json", "formula": "(provider inputTokens * catalog inputUsdPerMtok + provider outputTokens * catalog outputUsdPerMtok) / 1000000; no cache discounts; not a charge receipt" } } }