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Re:可能存在两条边连接两个顶点In Reply To:Re:可能存在两条边连接两个顶点 Posted by:xiaoxiao at 2004-03-16 18:14:57 > 就是有环,比如: > 1 2 > 2 1 > 0 0 > > 1 1 > 0 0 > 两种情况都不是树。 那如果想输入只有根结点的树, 应该是怎么输入的呢? Followed by:
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