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

int main(){
 long long a,b;
 cin >> a >> b;
  
  int cnt=0;
  for(long long i=1LL;i<a;i++){
    if(a%i==0 && b%i==0) cnt++;
  }

  if(cnt%2==0) cout<< "Even "<<endl;
  else cout<< "Odd "<<endl;

 return 0;
}