#include <iostream>
#include <bitset>
using namespace std;
int main(void){
    string s, t;
    cin >> s >> t;
    bitset<70> a(s), b(t);
    unsigned long long c = a.to_ullong() * b.to_ullong();
    if (c%2 == 0) {
        cout << "Even" << endl;
    }
    else cout << "Odd" << endl;
}