#include <iostream>
#include <vector>
#include <cmath>

using namespace std;
using int64 = long long;

int main() {
    double d1, d2;
    cin >> d1 >> d2;

    if (sqrt(d1) == sqrt(d2) || sqrt(d1) == sqrt(d2)/2) cout << 4 << endl;
    else if (sqrt(d1) > sqrt(d2) || sqrt(d1) < sqrt(2.0*d2)/4.0) cout << 0 << endl;
    else cout << 8 << endl;
}