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添加一个虚根，它连向所有没有入读的点。然后参照1155进行DPIn Reply To:Re:哪位大大解释一下这个题目怎么做吧 Posted by:maomivan at 2007-08-14 20:20:21 > > 我是这么做的，效率不是很高。。。。 > 建一棵二叉树（加一些权重无穷大的节点将n叉树转化为2叉树），然后DP。 Followed by: Post your reply here: |
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