#include <stdio.h>

int tri(double x, double y, double z)
{
	if((x >= y + z || y >= x + z || z >= x + y) || (x <= 0 || y <= 0 || z <= 0))
		return 0;
	if(x == y && y == z)
		return 1;
	if((x == y && y != z) || (x == z && z != y) || (y == z && z != x))
		return 2;
	else
		return 3;
}

int main(void)
{
	double i;
	double j;
	double k;
	#if !MOOSHAK
	printf("Introduza as medidas do triangulo:\n");
	#endif
	scanf("%lf %lf %lf", &i, &j, &k);
	printf("%d\n", tri(i, j, k));
	return 0;
}