#include<iostream>
#include<cmath>
#define EPS 1e-5
using namespace std;

int x, y;
int main() {
cin >> x >> y;
int z = x*x * y*y;
double r = sqrt( (double)z ) + EPS;
int ans = r * 2 + 1;
cout << ans << endl;
return 0;
}