#include<bit/stdc++.h>
using namespae 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";
}
retrn 0;
}