#include <iostream>
#include <cstring>
#include <cmath>
#include <algorithm>
#include <iomanip>
using namespace std;
int main()
{
	int a,b;
	double sum = 0,cnt = 0;
	cin >> a >> b;
	sum = b * b * a * 3.14;
	while(sum < 20000)
	{
		sum += sum;
		cnt++;
	}
	cout << ++cnt;
	return 0;
}