Difficult problem about cycle

Правка en1, от bhikkhu, 2016-09-12 06:02:25

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=2874

I don't know how should I dissect the problem. Can anbody post an analysis?

Теги cycle detection

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en1 Английский bhikkhu 2016-09-12 06:02:25 219 Initial revision (published)