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北京大学《ACM/ICPC大学生程序设计竞赛训练》暑期课面向全球招生!

这道题目千万注意!!!!!!!!

Posted by huzijin at 2010-07-25 11:37:10 on Problem 3277
1. __int64 
2. 40000 条线段,离散化得到80000个点,所以,线段树区间数应开3*80000
3.区间用半开半闭,插入的时候只插双闭区间

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