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又是内存池出问题 鄙视下自己。。。

Posted by abilitytao at 2009-09-26 21:43:29 on Problem 1904 and last updated at 2009-09-26 21:52:18
pS:这题 出的解法实在巧妙,将一个匹配问题转化成强连通分量来做,很有回味的余地啊。写个解题报告好了。。。

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