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应该怎么做呢？

Posted by xiaxia at 2006-03-25 00:11:05 on Problem 2785
In Reply To:Re:是数据范围太大了 Posted by:xiaxia at 2006-03-24 23:50:34

Followed by:

枚举两个两个的和，O(n^2lgn) (0) frkstyc 2006-03-25 00:12:56
- 枚举a b 然后枚举c d 然后检查其中相反数？ (0) first 2006-03-25 00:19:08
  - en (0) frkstyc 2006-03-25 00:21:49
    - 我竟然枚举abcd了，枚举就是n^2阿那个lgn怎么来的望赐教 (0) first 2006-03-25 00:25:38
- 是把他们排序才有N^2logN的吧，我这样做了，结果超时 (0) zerocool_08 2006-03-25 00:29:41
  - 为什么要排序呢开始我用map做的枚举abcd tle了 (0) first 2006-03-25 00:42:08
    - 弱弱的问一下，map是什么东西，是STL里的东西吗？ (0) zerocool_08 2006-03-25 00:45:23
      - right (0) frkstyc 2006-03-25 00:54:40

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