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Re:Travel的unique是怎么定义的?

Posted by CO2 at 2006-10-21 14:33:23
In Reply To:Travel的unique是怎么定义的? Posted by:zhuzeyuan at 2006-10-21 14:30:24
> 题目说的含糊不清啊,sample为什么有3个?

tourist wants his or her route to have a unique path compared with others.

就是说 某个人的一条路径 a->b->c->...-->x中 一定要存在一个i->j,这段路是所有其他人的路线所不具备的。


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