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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int nCr(int n,int r){
  5.     if(r==0)
  6.         return 1;
  7.     return nCr(n-1,r-1)*n/r;
  8. }
  9. int main() {
  10. 	int n,r;
  11. 	cin>>n>>r;
  12. 	cout<<nCr(n,r)<<endl;
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 4336KB
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https://ideone.com/Iv5PBC
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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