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Re:本题是我的第50题ac，纪念一下。使用方法是只有一个点入度为0，且其他结点入度为1.In Reply To:Re:本题是我的第50题ac，纪念一下。使用方法是只有一个点入度为0，且其他结点入度为1. Posted by:manchester__united at 2010-03-18 15:39:51 只有一个点入度为0，其他节点入度为1只是必要条件，并不是成树的充分条件 Followed by: Post your reply here: |
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