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