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At first, I wondered what if there would be some circles in the graph, in which case situation would have been more complicated.

Posted by yogafrank at 2008-10-23 16:32:08 on Problem 1985 and last updated at 2008-10-23 16:32:39
In Reply To:原来是树啊! Posted by:daringQQ at 2006-07-15 01:01:11
And with the aim to test the code which works for poj2631, I did some slight changes and then submitted the code. What surprised most is that the code has also been accepted but the run time has reached 1100ms, which is relatively a long one.

Hope those whose run time is 60ms could share the experiences.

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