#include<iostream>
#include<cmath>

#define REP(i,a,b) for(int i=(int)(a);i<(int)(b);++i)

using namespace std;

int main(){
  int X, Y;
  cin >> X >> Y;
  cout << ceil((sqrt(X * X + Y * Y) + 1e-6) * 2) << endl;
  return 0;
}