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Codeforces
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Codeforces Round 488 by NEAR (Div. 1)
2018/06/17 00:35150 分钟993
Codeforces
ATwo SquaresTwo Squares
1600
仅原文
BOpen CommunicationOpen Communication
1900
仅原文
CCareful ManeuveringCareful Maneuvering
2100
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DCompute PowerCompute Power
2500
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ENikita and Order StatisticsNikita and Order Statistics
2300
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FThe Moral DilemmaThe Moral Dilemma
3200
仅原文