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是什么方法啊？我是新手！这题总是超时。

Posted by 382614159 at 2006-06-08 11:53:33 on Problem 1656
In Reply To:Re:题目的规模太小了，要是10000×10000的话估计就不能直接这样搞了... Posted by:382614159 at 2006-06-08 11:52:35 
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