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10628. Count on a treeProblem code: COTYou are given a tree with N nodes.The tree nodes are numbered from 1 to N.Each node has an integer weight.We wi... 阅读全文
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1022: [SHOI2008]小约翰的游戏JohnTime Limit: 1 SecMemory Limit: 162 MBSubmit: 1189Solved: 734[Submit][Status]Description小约翰经常和他的哥哥玩一个非常有趣的游戏:桌子上有n堆石子,小约翰和他的哥... 阅读全文
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1557. Can you answer these queries IIProblem code: GSS2Being a completist and a simplist, kid Yang Zhe cannot solve but get Wrong Answer from most of... 阅读全文