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终于把他搞定了，两个月前不可能做的题

Posted by sunmoonstar_love at 2005-08-10 11:07:57 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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