A Mathematical Curiosity

#include <iostream>using namespace std;int main(){ int n, m;//输入 int r, a, b, c; int N;//情况 cin>>N; for(int i=0;i<N;i++) {     c = 0;  while (cin>>n>>m)  {   if (n == 0 && m == 0)    break;   r = 0;   for (a = 1; a < n; ++a)   {    for (b = 1; b <= n; ++b)    {        if(a>b)     if ((a*a+b*b +m)%(a*b) == 0)      ++r;    }   }   cout<<"Case "<<++c<<": "<<r<<endl;  }  if(i!=N-1)      cout<<endl; } return 0;}