using System;

public class Program

{

    public static void Main()

    {

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

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

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

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

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

        if(choice == 'y' || choice == 'Y'){

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

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

            float discount = price * per / 100f;

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

            Console.WriteLine("Net Price = {0:N} Baht .",price-discount);

        }

        else if ((choice == 'n' || choice == 'N')){ 

            if (price >= 2000){

            float discount = price * 10 / 100f;

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

            Console.WriteLine("Net Price = {0:N} Baht .",price-discount);

            }

            else{

                Console.WriteLine("net Price = {0:N} Bath.",price);

            }

        }

    }

}