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Re:该题根本不用并查集。树的性质。。附AC代码,,In Reply To:Re:该题根本不用并查集。树的性质。。附AC代码,, Posted by:SKT_SOO at 2017-09-29 04:45:49 > Every node except the root has exactly one edge pointing to it. > > 完全不管边的方向讲道理是会跪的吧。 Followed by: Post your reply here: |
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