#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(long long)(n);++i)
#define all(a) a.begin(), a.end()
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
 
const int MOD=1e9+7;
const ll INF=1e18;
const int MAX=510000;
const double pi=acos(-1);
int dx[8] = {1,0,-1,0,1,1,-1,-1};
int dy[8] = {0,1,0,-1,-1,1,1,-1};

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false); 
  
  ll a,b;
  cin >> a >> b;
  int cnt = 0;
  for(ll i=1;i*i<=a;i++){
    if(a%i == 0 && b%i == 0){
      ++cnt;
      if(a%(a/i) ==0 && b%(a/i) == 0)++cnt;
    }
  }
  if(cnt&1)cout << "Odd" << endl;
  else cout << "Even" << endl;
  return 0;
}