#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define LOL cout<<'\n';
#define MOD 1000000007
#define sz(x) ((int)x.size())
#define INF LONG_LONG_MAX
#define NINF LONG_LONG_MIN

int gcd(int a, int b) 
{ 
    if (b == 0) 
        return a; 
    return gcd(b, a % b);     
} 

void solve(){
  int a,b; cin>>a>>b;
  if(b>a) swap(a,b);
  int c=gcd(a,b);
  if(c&1) cout<<"Odd";
  else cout<<"Even";
  LOL
}

signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0); cout.tie(0);
  solve();
  return 0;
}