#include <bits/stdc++.h>
using namespace std;
 
int main() {
  long long A,B;
  long long H=0;
  cin>>A>>B;
  for(long long X=1;X<=__gcd(A,B)/2;X++){
    if(__gcd(A,B)%X==0&&__gcd(A,B)%X==0){
      H++;
    }
  }
  if((H+1)%2==0){
    cout<<"Even"<<endl;
  }
  else{
    cout<<"Odd"<<endl;
  }
}