#include <iostream>
using namespace std;

int pascal(int n,int k)
{
	if(k==0)
		return 1;
	
	if(k==n)
		return 1;

	return pascal(n-1,k-1) + pascal(n-1,k);
}

int main() {
	int n,k;
	cout<<"Enter the values of n and k";
	cin>>n>>k;
	cout<<endl<<pascal(n,k);
	return 0;
}