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这题用匹配怎么做啊~

Posted by choupigwb at 2008-10-17 10:48:02 on Problem 2289
之前做过类似的,二分答案,再化成N——(M*mid)的二分匹配,但是这题N*N*M超内存~不知道怎么做了,大牛指教下~。

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