#include using namespa

#include using namespace std;int fun(int n, int minNum, int maxNum) {\tint tot, i;\tif (n == 0)\t\treturn 1;\ttot = 0;\tfor (i = minNum; i <= maxNum; i  )\t\ttot  = fun(n - 1, i   1, maxNum);\treturn tot;}int main() {\tint n, m;\tcin >> n >> m;\tcout << fun(m, 1, n) << endl;\treturn 0;}

输入：6 3

输出：_________