2010年puzzleup竞赛第2题
时间：2010年07月24日作者：amao查看次数:1,197 次评论次数：1
原题：http://www.puzzleup.com/2010/puzzle/?220
A group of people is sitting around a round table. They give a coffee break. When they return to the table after the break, they sit down randomly. Interestingly, they notice that the six closest persons sitting next to each one of them (three to the left, and three to the right) are completely different from the six closest persons in the previous setting.
At least how many persons should be there?
==============
注：关于puzzleup竞赛，参见这里
声明: 本文采用 BY-NC-SA 协议进行授权 | 数学建模网—SHUMO.COM
转载请注明转自《2010年puzzleup竞赛第2题》
发表评论
去看看 。
[回复]