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想错了,考虑太少了,的确是二分图

Posted by 0huzi0 at 2009-04-13 16:14:01 on Problem 1422
In Reply To:这一题用队列拓扑,记录首尾最大差值就可以了吧 Posted by:0huzi0 at 2009-04-12 22:14:59


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