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两点补充

Posted by aoxboxcox at 2012-12-29 14:52:59 on Problem 1343 and last updated at 2013-02-28 17:01:29
(1)虽然标题有Rooted字样,但让比较的树是不区分root的。图同构即归一类。
(2)所有结点ID都从1到n。

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