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Codeforces
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Codeforces Round 689 (Div. 2, based on Zed Code Competition)
2020/12/11 22:35120 分钟1461
Codeforces
AString GenerationString Generation
800
仅原文
BFind the SpruceFind the Spruce
1400
仅原文
CRandom EventsRandom Events
1500
仅原文
DDivide and SummarizeDivide and Summarize
1600
仅原文
EWater LevelWater Level
2200
仅原文
FMathematical ExpressionMathematical Expression
2700
仅原文