#include <iostream>
using namespace std;
int gcd(long long x,long long y){return y ? gcd(x,x%y) : x;}
int main(){
    long long a,b;
    cin >> a >> b;
    long long p = gcd(a,b);
    long long ans = (a / p) * (b / p);
    cout << ans * p * 4;
}