Introduction - If you have any usage issues, please Google them yourself
No. 1,2, ... n of the n individuals in a clockwise direction around a circle, one person holding a password. One began to choose a positive integer as the number of reported upper limit m, from the first to embark on the clockwise direction since the beginning of the order of one off, back off m stop. reported m the person out of his password as the new m value, from him in a clockwise direction on the next person started to count off from one, it goes on like this until all the column until all.