#include #define rep(i, n) for (int i = 0; i < (int)(n); i++) using namespace std; typedef long long ll; typedef vector vi; typedef vector vl; // 最大公約数 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 x = gcd(A, B); if (x != 1) { cout << "Even" << endl; } else { cout << "Odd" << endl; } } // 1000000000000000000 1000000000000000000