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Re:这题最小路径覆盖是有环的，Note that some rides may end after midnight.，2分图做有效吗

Posted by tiaotiao at 2008-09-24 18:59:16 on Problem 2060
In Reply To:这题最小路径覆盖是有环的，Note that some rides may end after midnight.，2分图做有效吗 Posted by:lynncui at 2008-08-13 00:29:34 
怎么可能有环……
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