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