using System;

public class Program

{

    public static void Main()

    {

        int G;

        Console.WriteLine("write your final grada (1-10) and 1¨11 tell you passed or falled");

        G=int.Parse(Console.ReadLine());

        switch (G)

        {

            case 0:

            case 1:

            case 2:

            case 3:

            case 4:

            case 5:

            case 6:

                Console.WriteLine("oh no you failed!");

                break;

            case 7:

            case 8:

            case 9:

            case 10:

                Console.WriteLine("Grat!! you passed");

                break;

            default:

                Console.WriteLine();

                Console.WriteLine("hey, it is impossible to have that grade");

                break;

        }

    }

}