//(c) kreator, '98
//passion in harmony
#include <stdio.h>
#include <math.h>

float fakto(int n)
{
	int i;
	float brb=1.;
	for(i=1;i<=n;++i) brb*=i; //brb=brb*i;
	return brb;
}

void main(void)
{
	int n, r;
	float binjom;

	printf("Unesi zadani cijeli broj n i r ");
	scanf("%d %d", &n, &r);
	binjom=fakto(n)/(fakto(n-r)*fakto(r));
	printf("n: %d, r: %d, binom: %f\n", n, r, binjom);
}