poj1664~递归

#include<iostream>
using namespace std;

int fun(int x,int y)
{
    if(x<0) return 0;
    if(x==0||y==1) return 1;
    else return fun(x-y,y)+fun(x,y-1);

}

int main()
{
    int t;
    while(cin>>t){
    while(t--)
    {
        int m,n;
        cin>>m>>n;
        int k=fun(m,n);
        cout<<k<<endl;
    }
    }
    return 0;
}