根据7游戏做的一个小程序，

元旦晚会上，有n个学生围坐成一圈，开始玩一种数字7游戏。围坐成一圈的学生按顺时针顺序编号，第一个学生的编号为1，最后一个学生的编号为n。第一个学生从1开始报数，按顺时针方向，下一个学生接着报下一个数。每当有学生报出来的数是7的倍数，或者是一个含有数字7的数时，则该学生出列退出游戏，下一个学生接着报下一个数。当剩下最后一个学生时，这个学生要为大家表演一个节目。-According to 7 games do a small procedure, New Year s party, there are n students into a circle around and began playing a number of 7 games. Students into a circle around clockwise sequentially numbered, the first students numbered 1, the final number of students n. The first students from 1 to start off, according to a clockwise direction, under a student and then a few reported. Whenever there is a number of students out is a multiple of 7, or a number 7 contains a few hours, the students set out to withdraw from the game, the next a student and then a few reported. When the last remaining student, the student must perform a program for everyone.