using System;

public class Program

{

    public static void Main()

    {

        start:

        Console.WriteLine("Welcome to schoolstoreys");

        Console.WriteLine("How many rulers would you like to buy?");

        byte ruler = byte.Parse(Console.ReadLine());

        decimal price1 = ruler * 1.50M;

        Console.WriteLine("You spent " + price1.ToString("C")+ " on rulers" );

        Console.WriteLine("---------------------------------");

        Console.WriteLine("                                 ");

        Console.Write("And how many rolls of tape? ");

        byte tape = byte.Parse(Console.ReadLine());

        decimal price2 = tape * 3.23M;

        Console.WriteLine("You spent " +price2.ToString("C") + " on rolls of tape");

        Console.WriteLine("---------------------------------");

        Console.WriteLine("                                 ");

        Console.WriteLine("Alright how many markers?");

        byte marker = byte.Parse(Console.ReadLine());

        decimal price3 = marker * 4.12M;

        Console.WriteLine("You spent " +price3.ToString("C") + " on markers");

        Console.WriteLine("---------------------------------");

        Console.WriteLine("                                 ");

        Console.WriteLine("Finally how many notebooks would you like?");

        byte notebooks = byte.Parse(Console.ReadLine());

        decimal price4 = notebooks * 1.23M;

        Console.WriteLine("You spent " + price4.ToString("C") + " on notebooks");

        decimal subtotal = price1 + price2 + price3 + price4;

        Console.WriteLine("---------------------------------");

        Console.WriteLine("                                 ");

        if (subtotal>1 && subtotal <=50)

        {

            decimal shipping = 7.99M;

            Console.WriteLine("The shipping fee will be "+ shipping.ToString("C"));

            Console.WriteLine("-----------------------------");

            Console.WriteLine("Your subtotal is " + subtotal.ToString("C"));

        Console.WriteLine("---------------------------------");

        Console.WriteLine("                                 ");

        decimal tax = subtotal * 8.625M/100M;

        decimal taxed = subtotal + tax;

        decimal gtotal = taxed + shipping;

        Console.WriteLine("Your total after tax and shipping is " + gtotal.ToString("C"));

        }

        else if (subtotal>50&&subtotal<=100)

        {

            decimal shipping = 9.99M;

             Console.WriteLine("The shipping fee will be " + shipping.ToString("C"));

            Console.WriteLine("-----------------------------");

            Console.WriteLine("Your subtotal is " + subtotal.ToString("C"));

        Console.WriteLine("---------------------------------");

        Console.WriteLine("                                 ");

        decimal tax = subtotal * 8.625M/100M;

        decimal taxed = subtotal + tax;

        decimal gtotal = taxed + shipping;

        Console.WriteLine("Your total after tax and shipping is " + gtotal.ToString("C"));

        }

        else if (subtotal >100)

        {

            decimal shipping = 0M;

            Console.WriteLine("The shipping fee will be " +shipping.ToString("C"));

            Console.WriteLine("-----------------------------");

            Console.WriteLine("Your subtotal is " + subtotal.ToString("C"));

        Console.WriteLine("---------------------------------");

        Console.WriteLine("                                 ");

        decimal tax = subtotal * 8.625M/100M;

        decimal taxed = subtotal + tax;

        decimal gtotal = taxed + shipping;

        Console.WriteLine("Your total after tax and shipping is " + gtotal.ToString("C"));

        }

        else 

        {

            Console.WriteLine("You need to spend money");

        }

        Console.WriteLine("Would you like to purchase more? (y/n)");

        string choice = Console.ReadLine();

        if (choice == "Y" || choice == "y")

        {goto start;

        }

        else 

        {

            Console.WriteLine("Okay!");

        }

    }

}