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我刚看了下题目,直接构成就行了,N*N 的共N^2个数,构造(N^2)/2个,另一半对称就行了.

Posted by caizhicong0503 at 2008-11-04 20:51:49 on Problem 2837
In Reply To:这个题目什么思路呢??? Posted by:ACM_henry at 2008-11-04 20:37:54


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