#include<iostream>
#include<cstdio>
#include<cctype>
#include<string.h>
#include<math.h>
#include<cmath>
#include<algorithm>
#include<iomanip>
using namespace std;
int main()
{
	int n;
	cin>>n;
	if(n>=90&&n<=100)
	{
		cout<<"Great";
	}
	else if(n>=70&&n<=89)
	{
		cout<<"Good";
	}
	else if(n>=60&&n<=69)
	{
		cout<<"Average";
	}
	else
	{
		cout<<"Poor";
	} 
	return 0;
}