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Re:刚开始TLE,后来我也是这么改过以后就A了,但是为什么呢,难道这不是等效的么?

Posted by 1030202872 at 2010-10-25 11:58:30 on Problem 1042
In Reply To:刚开始TLE,后来我也是这么改过以后就A了,但是为什么呢,难道这不是等效的么? Posted by:1030202872 at 2010-10-24 22:37:59
知道了,原来可以为负的。。。。。。。。。。。。

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