int main() {
#define PI 3.14
	int h, r;
	double v;
	scanf("%d %d", &h, &r);
	v = PI* r * r * h;
	float n=0;
	n = 20000/v ;
	int buckets=0;

	if (buckets != (int)n)
	{
		buckets = ++n;
		printf("%d", buckets);
	}
	else
	printf("%d", n);
	return 0;

}```