#include<bits/stdc++.h>
using namespace std;
using ll = long long;

ll gcd(ll a, ll b) {
    if(b == 0)
        return a;
    else
        return gcd(b,a%b);
}

int main() {
    ll A,B; cin >> A >> B;
    ll g = gcd(A,B);
    A /= g; B /= g;
    cout << g * gcd(A+B,g) << endl;
}