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样例中的两个置换看上去好像都是奇置换的样子……

Posted by Ikki at 2005-10-17 13:57:43 on Problem 1507
In Reply To:谁可以比较详细的介绍一下这个题目的算法……/lh……我不会了…… Posted by:Ikki at 2005-10-17 11:37:47


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