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搜索才是王道!

Posted by DongSJ at 2011-11-03 22:35:52 on Problem 3185
不费脑筋,只要大概分析一下数据范围能过就行,应该是比赛的时候速度最快(指解出题目的时间,不是程序运行时间)的思路。

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