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Divide Tree(0785)问题描述As we all know that we can consider a tree as a graph. Now give you a tree with nodes having its weight. We define the weight of ... 阅读全文
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March of the PenguinsTime Limit:8000MSMemory Limit:65536KTotal Submissions:4378Accepted:1988DescriptionSomewhere near the south pole, a number of peng... 阅读全文
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EscapeDescriptionBH is in a maze,the maze is a matrix,he wants to escape!InputThe input consists of multiple test cases.For each case,the first line c... 阅读全文
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同swustoj 11BilliardTime Limit:1000MSMemory Limit:65536KTotal Submissions:1362Accepted:842DescriptionIn a billiard table with horizontal side a inches ... 阅读全文