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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!

Re:好人!!太感谢了!

Posted by JokerKS at 2010-10-04 21:31:59 on Problem 1308
In Reply To:注意~!~!~!需要注意的数据 Posted by:xuhanqiu at 2006-08-18 09:48:42
> 2: 1 1 0 0 不是树 不能自己指向自己
> 3: 1 2 1 2 0 0 不是树....自己开始一直在这么WA  好郁闷 重复都不行呀~~5555
就错这俩了,
不过,这题太bt了吧……

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