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肯定是要反向建图的，很容易构造出反例证明直接贪心是错的。另外，如果用邻接表可以不判重。顺便赞一下STL真好用！In Reply To:不需要逆向。。。尼玛只要判重就够了 Posted by:HermioneS at 2012-02-25 23:23:00 Followed by: Post your reply here: |
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