说明：  2.1将n个人围成一圈，m为未进入游戏前的先行码，用来淘汰第一个出 局的人，然后依次给出淘汰者的密码，根据输入的密码来确定下一个淘汰是哪一个，并依次输出被淘汰的人对应的号码。 2.2用单向循环链表实现操作。
(2.1 n personal cordons m not yet entered the game before the first yards out for the first out, then eliminated were given the password, the password to determine under which a one-out, and turn out the output of the corresponding number. 2.2 List circle with a one-way operation to achieve.)