using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        //Membership Type

        Console.WriteLine("Bronze");

        Console.WriteLine("Silver");

        Console.WriteLine("Gold");

        Console.WriteLine("Platinum");

        //Ask users to provide number

        Console.WriteLine("Please enter the program number");

        int iInput;

        string strInput = Console.ReadLine();

        //Validate Number

        bool IsValidNumber = Int32.TryParse(strInput, out iInput);

        if (IsValidNumber == false)

        {

            Console.WriteLine("Please enter a valid number");

            return;

        }

        //Is the number between 1 and 4

        if (iInput < 1 || iInput > 4)

        {

            Console.WriteLine("Error Please enter number between 1 and 4");

            return;

        }

        switch (iInput)

        { 

            case 1:

                Console.WriteLine(" Bronze Membership selected. Your discount rate is: 5%");

                break;

            case 2:

                Console.WriteLine(" Silver Membership selected. Your discount rate is: 10%");

                break;

            case 3:

                Console.WriteLine(" Gold Membership selected. Your discount rate is: 15%");

                break;

            case 4:

                Console.WriteLine("Platinum Membership selected. Your discount rate is: 20%");

                break;

            default:

                Console.WriteLine("Invalid Input");

                break;

        }

    }

}