#include <iostream> #include <vector> #include <cstdio> #include <algorithm> #include <cassert> #include <utility> #include <string> #include <cmath> #include <set> #include <functional> #include <map> #include <queue> #include <stack> #include <iomanip> using namespace std; #define rep(i,n) for(int i = 0; i < n; ++i) #define show(x) cout << #x << " = " << x << endl; typedef long long ll; typedef pair<int,int> pii; int main(){ ll a,b; cin >> a >> b; ll hoge = __gcd(a,b); cout << __gcd(hoge,a/hoge+b/hoge)*hoge << endl; }