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晕,我们期末考的就是这个题,证明存在解(所以这题肯定有解?)

Posted by windbells at 2005-07-11 21:25:44 on Problem 2438
In Reply To:请教大家对这题的解法 Posted by:c0500446123 at 2005-05-29 21:28:10
> 这题成为今天的第二简单题,实在太弱了
> 1.请教大家用什么方法做出来的?(应该都是搜吧?)
> 2.如果把n扩大到1000甚至2000,有更好的方法吗?

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