/*

*/
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define rep(i, n) for(int i = 0; i < (int)(n); i++)

int main(){

  string a, b;
  cin >> a;
  cin >> b;

  ll x = stoll(a, 0, 2) * stoll(b, 0, 2);
  if(x%2 == 0){
    cout << "Even" << endl;
  }else{
    cout << "Odd" << endl;
  }

  return 0;
}