{"sources": [{"url": "https://api.imdnotdead.fun/artifacts/2d4b30bbc6bffbc500b37ce5e8a1ac821d6513c52a6a2377b4be3c11d97717fb", "quote": "_IncumbentStrategy = Strategy\n\nclass Strategy(_IncumbentStrategy):\n    \"\"\"Cancel a rival-retreated side for 1 callbacks, spreads 2/3 only.\"\"\""}, {"url": "https://api.imdnotdead.fun/artifacts/149883fee797ad95a91e535b7a74453587a3eb19ca87ab95f7d8585db160a8f4", "quote": "\"\"\"Exact per-spread merge: c1-pairs, c2-queue, a3-ledger, c4-all; no fixes.\"\"\"\nimport math\nfrom orderbook_pm_challenge.strate"}, {"url": "https://api.imdnotdead.fun/artifacts/db22aff7167a4798251ed3d20432509f30e511e4958799aba5b17b41bb39b4b6", "quote": "\"\"\"Exact per-spread merge: c1-pairs, c2-queue, a3-ledger, c4-all; no fixes.\"\"\"\nimport math\nfrom orderbook_pm_challenge.strate"}, {"url": "https://github.com/danrobinson/prediction-market-challenge", "quote": "a single FIFO limit order book for a binary `YES` contract"}]}