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更好的办法是搜……搜就可以0ms

Posted by frkstyc at 2006-02-19 18:32:16 on Problem 2088
In Reply To:状态DP? Posted by:wywcgs at 2006-02-19 18:31:05 
> 我只想到了n^2 * 2^n 的方法，有更简单的么
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