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这题应该怎么做？谁可以提示一下。注意是提示

Posted by toontong at 2008-03-09 14:46:27 on Problem 3517

注意是提示

Followed by:

有公式的吧，不过也可以用线段树的。 (9) Thank_you 2008-03-10 14:35:24
- Re:有公式的吧，不过也可以用线段树的。 (8) 350053879 2008-03-10 15:08:17
  - 就是记录一下每个区间还剩多少人 (0) SherlockBourne 2008-03-10 15:33:01
    - Re:就是记录一下每个区间还剩多少人 (23) AngelClover 2008-03-12 22:42:55

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