#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(v) v.begin(), v.end()
typedef long long ll;

#include <bits/stdc++.h>
using namespace std;

int main() {
  ll a,b;
  cin>>a>>b;
  
  ll m=gcd(a,b);
  
  ll cnt2=0;
  while(m>1 && m%2==0){
      cnt2++;
      m/=2;
    }
  if(cnt2%2==1){
    cout<<"Even"<<endl;
    return 0;
  }
  
  map<ll,ll> c;
  for(ll i=3;i*i<=m;i+=2){
    while(m>1 && m%i==0){
      c[i]++;
      m/=i;
    }
  }
  
  bool flag=true;
  for(auto x:c){
    if(x.second%1==0) flag=false;
  }
  
  if(b) cout<<"Odd"<<endl;
  else cout<<"Even"<<endl;

  return 0;
}