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有界度生成树不是np-hard的问题吗

Posted by hawk at 2004-01-10 12:40:36 on Problem 1639
In Reply To:度限制生成树，一个从最小生成树修改的贪心 Posted by:dynamic at 2004-01-10 11:38:59 
可以贪心？还是这个题目有特殊条件？
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