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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!

没有无法到达的情况

Posted by craig04 at 2013-08-22 16:53:12 on Problem 3626 and last updated at 2013-08-22 16:53:31
In Reply To:wa的同学提供参考 Posted by:jackjie at 2012-08-02 11:54:39
> 当无法到达目标的时候,什么也不输出
RT

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