有n个小孩围成一圈（编号从1~n），从编号为1的小孩开始顺序循环报数1~m，凡报m者出圈，直到圈中所剩唯一者（称为获胜者）。给定正整数n及m，计算获胜者的编号。-There are n children form a circle (number from 1 ~ n), from the number of children of 1 cycle at the beginning of the order of the number of 1 ~ m, where m is reported from the circle, until the only remaining person in the circle (known as the winner persons). Given positive integer n and m, calculate the number of winners.