#include <iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    if(n>=90)
        cout<<"Great"<<endl;
    else if(n>=70)
        cout<<"Good"<<endl;
    else if(n>=60)
        cout<<"Average"<<endl;
    else    
        cout<<"Poor"<<endl;
    return 0;
}