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循环交换费用只会变大

Posted by 00448242 at 2005-07-15 19:03:21 on Problem 1062
In Reply To:关键是:是不是要循环交换啊??就是图中有环出现 Posted by:wcp at 2005-07-15 17:47:35 
图中可能会有圈
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