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状态dp也可以,就是内存……不过不会mle

Posted by frkstyc at 2006-01-13 11:39:34 on Problem 2088
In Reply To:谁能告诉我一种好的方法啊 Posted by:gridwang at 2006-01-13 11:28:34
> 我的办法是遍历全排列。
> 如果某个子排列大于420秒就剪枝,最大可剪掉(n-1)!
> 可是超时
> 哪位大侠给个好的办法啊

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