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Re:怎么判断不过，impossible？

Posted by 996195670 at 2014-06-12 00:32:12 on Problem 3087 and last updated at 2014-06-12 00:32:57
In Reply To:怎么判断不过，impossible？ Posted by:pclimbing at 2010-08-17 11:37:26

这是完全洗牌，会出现重复的，只要保留一开始的然后判断就可以了

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