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理解了... 是可达的意思吧. 可惜比赛时一直没把题目意思看清，浪费太多时间了In Reply To:D的Pku上的分析是不是有问题？那种解法是完全针对最小路径覆盖做的啊？如果这样一个图，应该输出什么？ Posted by:Bluebird at 2005-08-28 17:04:42 Followed by:
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