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

using ll = long long;
const ll mod = 1e9+7;

int main() {
    string A, B;
    cin >> A >> B;
    int P(A[A.size()-1]-'0'), Q(B[B.size()-1]-'0');
    if((P*Q) % 2) {
        cout << "Odd" << endl;
    }else {
        cout << "Even" << endl;
    }
    return 0;
}