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还是没作出来，给一下提示吧：）

Posted by threestonehan at 2004-11-28 14:33:35 on Problem 1703
In Reply To:郁闷中！ Posted by:hujk2008 at 2004-10-23 15:16:58

Followed by:

并查集 (0) windbells 2004-11-28 20:56:42
- 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 (0) ArXoR 2005-03-05 23:19:20
  - 每次把a1和e[a2]合并，a2和e[a1]合并就行了 (0) TN 2005-03-06 12:47:19
    - 呃...没看懂...我想想 (75) ArXoR 2005-03-06 13:16:48
      - 两种方法是并查集的两种实现（至少我是这么觉得的） (79) TN 2005-03-06 13:18:12

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