#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <utility>
#include <string>
#include <queue>
#include <stack>

using namespace std;

typedef long long int ll;
typedef pair<int, int> Pii;

const ll mod = 998244353;

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);

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

  if (a.back() == '1' && b.back() == '1') cout << "Odd" << endl;
  else cout << "Even" << endl;

  return 0;
}