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Re:这题怎么做?完全没思路。。。

Posted by sss868 at 2008-02-02 14:17:40 on Problem 3494
In Reply To:这题怎么做?完全没思路。。。 Posted by:RebornACM at 2008-01-31 21:04:40
> 看上去有点像DP,给点提示吧

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