using namespace std;

#include <iostream>
#include <vector>
#include <utility>
#include <algorithm>

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

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

}