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Re:我只能想到O(n^2)的，昨天比赛时还写废了。。期待好办法。。

Posted by charlescpp at 2007-10-25 09:03:41 on Problem 3431
In Reply To:我只能想到O(n^2)的，昨天比赛时还写废了。。期待好办法。。 Posted by:richardxx at 2007-10-25 08:35:56 
> rt
n^2的怎么做
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