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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!

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Posted by frkstyc at 2006-10-18 15:43:55 on Problem 1990
In Reply To:.....一个保存点的个数一个保存所有点坐标的和... Posted by:wywcgs at 2006-10-18 15:34:31


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