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坑爹啊。。

Posted by 331895686 at 2012-08-03 19:24:17 on Problem 3522
太坑爹了。。
因为忘记加freopen,调了好久啊。。
先用枚举下限+二分答案+并查集做了一遍,后来看了大家的讨论,枚举答案+kruskal也过了。。。T。T泪奔

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