using System;
public class Program
{
public static void Main()
Console.Write("Enter a Number : ");
int no;
no = Convert.ToInt32(Console.ReadLine());
int k;
k = 0;
for (int i = 1; i <= no; i++)
if (no % i == 0)
k++;
}
if (k == 2)
Console.WriteLine("Good job");
else
Console.WriteLine("sorry");
Console.ReadLine();