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看来是TC做多了,已经对这种复杂度 熟视无睹了 - -

Posted by wywcgs at 2008-03-22 21:36:12 on Problem 3443
In Reply To:一个动态规划…… Posted by:wywcgs at 2008-03-22 21:32:07
> 2^13保存木棍的使用情况,然后设当前最短的那根木棍长度是x, 另两根是x+a和x+b
> 每次拓展必然要先拓展最短的那根木棍,这样可知a和b的范围不会超过最长那根木棍的长度
> 所状态最多只有2^13 * 26 * 26个……如果限定a <= b那么状态数还能除2
> 每次选择一个木棍拓展,所以复杂度就是2^13 * 26 * 26 / 2 * 13 = 360W左右

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