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直接构成？ 没有太好的想法。。。 有规律还是枚举呢？In Reply To: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 Followed by: Post your reply here: |
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