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我觉得还是算最多输几轮，然后再用N去减更好。

Posted by 11119999 at 2006-08-17 14:29:24 on Problem 1323 
这样做可以省很多空间，而且时间也会快不少的。。。不过要先排个序，然后就去一个一个往后顺序找就可以了，可以复杂度虽然也是0 M×N的，但是最优CASE时候只是0 N的，嘿嘿。
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