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这个题目，存在环，应该是没有意义的，dfs可取吧In Reply To:真受不了那些用dfs还贴代码的人，那是题目数据太弱，不是你写对了，给你一组数据你跑一辈子也跑不完。 Posted by:illuminator at 2013-03-28 20:30:47 Followed by:
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