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Re:FT...连通不了的也输出cost......

Posted by reason at 2008-09-13 16:53:33 on Problem 1679
In Reply To:FT...连通不了的也输出cost...... Posted by:hdu08p02 at 2008-09-09 16:42:56 
居然m = 0的时候输出0
如果n != 0 && m == 0 这时候生成树不存在吧
我个人认为这种情况应该输出不唯一， 因为不存在， 唯一也没有
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