#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)) cout << 4 << endl;
    else if (sqrt(d1) < sqrt(d2)) cout << 0 << endl;
    else cout << 8 << endl;
}