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

int main() {
	string A, B;
	cin >> A >> B;
	int a = A.back() - '0', b = B.back() - '0';
	if (a * b % 2 == 0){
		cout << "Even" << '\n';
	} else {
		cout << "Odd" << '\n';
	}
}