M个人坐在一圈，开始数数，报到K或K的倍数的人出去，然后继续报数，直到最后剩下一个人，问最后剩下的人是谁？多少号？请大家自己设计算法，自己编程实现。(M sat in a circle and began to count, multiple report K or K people go out, and then continue to count off, until the last person left, who is the last person? What number? Please design your own algorithms, their own programming. M=50,)