#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (n);i++)
#define sz(x) int(x.size())
typedef long long ll;
typedef pair<int,int> P;
constexpr int INF = 1e9;

int main() {
  int x, y;
  cin >> x >> y;
  
  if (x == y || x * x == 2 * y * y ) {
    cout << 4 << endl;
  } else if (2 * x * x > y * y && x * x < y * y) {
    cout << 8 << endl;
  } else {
    cout << 0 << endl;
  }
  return 0;
}