#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

int main(){
    string A, B;
    cin >> A >> B;
    if(A.back() == '1' && B.back() == '1') cout << "Odd" << endl;
    else cout << "Even" << endl; 
    return 0;
}