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这人写程序怎么那么快？？？？？

Posted by frkstyc at 2005-07-18 19:55:19 on Problem 2489
In Reply To:线段树就非得插入线段么? ==〉 Good!真好人。=_+ Posted by:patina at 2005-07-18 19:46:20

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嗯, 而且一次就AC (0) c0500448242 2005-07-18 19:56:29
- 调过了样例就交了，看来算法对很重要，不过，我的巨慢无比 (0) patina 2005-07-18 20:22:55
  - 能在时限内出来就可以了，TUD比赛的时候这个题限90秒 (0) frkstyc 2005-07-18 20:25:47
    - 但是我很想知道别人怎么<1000ms的，:) (0) patina 2005-07-18 20:27:16
      - 我也想知道 (0) c0500448242 2005-07-18 20:33:55
        呵呵，好好想想吧，想办法把O(nlogn)-O(nlogn)搞成O(nlogn)-O(n)就行了 (0) frkstyc 2005-07-18 20:42:41
        斜率相同的那些线段覆盖大概也许似乎的确可以做到O(n)??那就不能排序了....怎么搞呢？ (0) palmtenor 2005-07-18 20:47:05
        我说的同组统计的时间，分组还是要O(nlogn)的 (0) frkstyc 2005-07-18 20:48:11

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