using System;

public class Program

{

    public static void Main()

    {

        String line="------------------------------------------------------------";

        Console.Write("Input total price : ");

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

        Console.Write("Do you have coupon [y/Y] :");

        char coupon = char.Parse(Console.ReadLine());

        Console.WriteLine("{0}",line);

         if (coupon == 'y' || coupon == 'Y' )

         {

             Console.Write("How many Discount (%) :");

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

             int discounted = discount * price / 100;

             Console.WriteLine("Discount from coupon ({0}%) = {1} Baht.",discount,discounted);

             Console.Write("Net price = {0:N} Baht",price - discounted);

​

         }

         else if(coupon == 'n' || coupon == 'N'  &&  price >= 2000)

         {

             int dis_pro = price * 10 / 100;

             Console.WriteLine("Discount from promotion = {0} Baht.",dis_pro);

             Console.Write("Net price = {0:N} Baht",price - dis_pro);

         }

         else if(coupon == 'n' || coupon == 'N' && price < 2000)

        {

             Console.Write("Net price = {0:N} Baht.",price);        

        }

    }

}