#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
int main(){
    string A,B;cin >> A >> B;
    ll X = stoll(A, 0, 2);
    ll Y = stoll(B, 0, 2);
    if(X%2==0||Y%2==0)cout << "Even" << endl;
    else cout << "Odd" << endl;
}