#include <bits/stdc++.h>
using namespace std;
void solve() {
  int a, b;
  cin >> a >> b;
  cout << (a * b % 2 ? "Obb" : "Even") << endl;
}
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  solve();
  return 0;
}
