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这道题用DP!

Posted by suncongbo at 2016-09-27 21:12:42 on Problem 1163
一开始用搜索写的时间复杂度O(2^(n-1))空间复杂度O(n^2)永远是TLE,MLE,RE。。直到后来学了DP。。发现巨撮。。

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