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明显是后者。你应该再仔细读一下输出要求。

Posted by ImLazy at 2008-09-17 22:12:26 on Problem 3687 and last updated at 2008-09-17 22:14:07
In Reply To:Re:这题数据有问题???看这组数据 Posted by:timeloop at 2008-09-17 21:11:58


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