#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;
  }
  
  for(ll i=3;i*i<=m;i+=2){
    ll cnt=0;
    while(m>1 && m%i==0){
      cnt++;
      m/=i;
    }
    if(cnt%2==1){
      cout<<"Even"<<endl;
      return 0;
    }
  }
  
  cout<<"Odd"<<endl;

  return 0;
}