rt

#include<bits/stdc++.h>
using namespace std;
int h,r,cnt;
int main(){
	cin >> h >> r;
	double v=h*r*r*3.14;
	while(1){
		if(v>=2000){
			cout << cnt;
			return 0;
		}
		v+=v;
		cnt++;
	}
	return 0;
}