#include <bits/stdc++.h>
using namespace std;
int main()
{
  int a=0;
  cin>>a;
  if(a>=90 && a<=100)
  {
    cout<<"Great";
  }
  if(a>=70 && a<=89)
  {
    cout<<"Good";
  }
  if(a>=60 && a<=69)
  {
    cout<<"Average";
  }
  if(a>=0 && a<=59)
  {
    cout<<"Poor";
  }
    return 0;