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每次把a1和e[a2]合并，a2和e[a1]合并就行了In Reply To:查并集怎么做的?我用的看起来已经不是并集了,仅仅是路径压缩的时候类似而已 Posted by:ArXoR at 2005-03-05 23:19:20 Followed by:
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