阅读程序写结果
#include<iostream>using namespace std; int solve(int n,int m){ int i,sum; if(m==1) return 1; sum=0; for(i=1;i<n;i++) sum+= solve(i,m-1); return sum;} int main(){ int n,m; cin>>n>>m; cout<<solve(n,m)<<endl; return 0;}输入：7 4