这是一个约瑟夫环问题，也可以看作是一个有趣的小游戏。有n个人围成一圈，每人手持一个密码；从第一个人开始报数，报到上限值就出列，并报出自己的密码，直到最后一个出列。-This is an issue of Joseph ring can also be seen as an interesting little game. There are n individuals form a circle, each armed with a password　from the beginning the first person reported that the number of columns to report the upper limit on out and report their own passwords, until the last one out of the column.