#include<bits/stdc++.h>

using namespace std;
using ll = long long;

bool is_integer(double x){
    return floor(x) == x;
}

int main(){
    double xp,yp;
    
    cin >> xp >> yp;
    
    double ans = 0;
    
    double dist = sqrt(xp*xp + yp*yp);
    
    if(is_integer(dist)){
        ans = dist + 0.5;
    }else{
        ans = ceil(dist);
    }
    ans *= 2;
    cout << (ll)ans << endl;
}