#include <iostream>
using namespace std;
 
int binomial(int n,int k){
  int m=n;
  int p=1;
  for(int i=1; i<k; i++){
    m *= (n-i);
    p *= (i+1);
  }
 return m/p;
}
 
int main(){
  cout << "(16 3)=" << binomial(16,3) << endl;
  cout << "(16 7)=" << binomial(16,7) << endl;
  cout << "(49 6)=" << binomial(49,6) << endl;
}