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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!

终于过了。。给一个测试数据

Posted by Sona at 2009-03-22 21:01:58 on Problem 3277
10
18 27 8
14 35 11
13 18 9
31 34 15
13 40 13
6 10 17
12 40 11
1 3 1
27 30 1
40 43 9

答案 465
如果你是468,那就在区间的修改操作中看看边界有没有问题吧。。

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