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如果有卫星频道的城市间可以随意联系，那么，就多了很多条长度为0的边，那么最小生成树中的很多条边都可以去掉了，那么最小生成树就不成立了啊

Posted by btw616 at 2010-08-03 18:28:21 on Problem 2349 



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