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

int main(){
    string a,b;
    cin >> a >> b;
    int la = a.length();
    int lb = b.length();
    if(a[la-1] == '0' || b[lb-1] == '0'){
        cout << "Even" << endl;
    }else{
        cout << "Odd" << endl;
    }
}