#include <iostream>
using namespace std;
int main() {
    string A, B;
    cin >> A >> B;
    int a=A.length();
    int b=B.length();
    if (A[a-1]=='0' || B[b-1]=='0') {
        cout << "Even" << endl;
    } else {
        cout << "Odd" << endl;
    }
    return 0;
}