#include <bits/stdc++.h>

using namespace std;
using llong = long long;
using ldbl = long double;
using lpair = pair<llong, llong>;

#define ALL(x) x.begin(), x.end()

constexpr llong mod = 1e9+7;
constexpr llong inf = mod * mod;

int main() {
  string a, b;
  cin >> a >> b;

  cout << (a.back() == '0' || b.back() == '0' ? "Even" : "Odd") << endl; 

  return 0;
}