#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (n);i++)
#define sz(x) int(x.size())
typedef long long ll;
typedef long double ld;
typedef pair<int,int> P;

int main() {
  ll a, b;
  cin >> a >> b;
  ll g = gcd(a, b);
  if (g % 3 == 0 || g % 3 == 1) {
    if (g % 4 == 1 || g % 4 == 0) {
      cout << "Odd" << endl;
      return 0;
    }
  }
  cout << "Even" << endl;
  return 0;
}