#include using namespace std; #define REP(i,n) for(int i=0; i<(int)(n); i++) #define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++) #define ALL(x) (x).begin(), (x).end() const double PI = acos(-1); long long gcd(long long a, long long b) { if (b == 0) return a; return gcd(b, a%b); } // override function template of std::gcd long long gcd(int a, int b) { return gcd((long long)a, (long long)b); } int main() { ios_base::sync_with_stdio(0); cin.tie(0); long long a, b; cin >> a >> b; cout << gcd(a+b, gcd(a+b, a) * gcd(a+b, b)) << endl; return 0; }