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

int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    string A, B;
    cin>>A;
    cin>>B;

    uint a = A[A.size()-1] - '0';
    uint b = B[B.length() -1] - '0';
    if (a*b%2) cout << "Odd\n"; else cout << "Even\n";

    return 0;
}