套板子+阅读理解
A.PACM Team
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B.Expected Number of Nodes
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C. Shuffle Cards
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D.Encrypted String Matching
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E. Sort String
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F.Sum Of Digit
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G.Sum Of Digit
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H.Diff-prime Pairs
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签到
I.Expected Size of Random Convex Hull
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J.Distance to Work
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圆和多边形面积并
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模板是个好东西，希望我也有