#include<stdio.h>
int main()
{
	int h,r,t=1;
	double V;
	scanf("%d%d",&h,&r);
	V=3.14*r*r*h;
	while(20000-V>0)
	{
		t+=1;
		V+=V;
	}
	printf("%d",t);
	return 0;
}