#include <iostream>
#include <string>

using namespace std;

int main() {
    string A, B;
    cin >> A >> B;

    if (*A.rbegin() == '1' && *B.rbegin() == '1') {
        cout << "Odd" << endl;
    } else {
        cout << "Even" << endl;
    }
    return 0;
}