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A-Magic Mirror Jessie has a magic mirror. Every morning she will ask the mirror: 'Mirror mirror tell me, who is the most beautiful girl in the world?' 阅读全文
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题解报告:poj 2955 Brackets(括号匹配) Description We give the following inductive definition of a “regular brackets” sequence: the empty sequence is a regular 阅读全文
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Description There is an old stone game.At the beginning of the game the player picks n(1<=n<=50000) piles of stones in a line. The goal is to merge th 阅读全文