using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace last
{
    class Program
    {
        static void Main(string[] args)
        {
            string ten, loai_san_pham = "";
            int so_luong = 0;
            int HMA = 200000;
            int VIP72 = 600000;
            int sock = 400000;
            int tong_tien = 0;
            int tien_giam = 0;
            Console.WriteLine("Chao mung den voi cua hang MMO");
            Console.WriteLine("Shop chung toi chi ban 3 loai san pham : HMA , VIP72 , sock");
            Console.WriteLine("HMA co gia 200 000/1 tai khoan");
            Console.WriteLine("VIP72 co gia 600 000/1 tai khoan");
            Console.WriteLine("Con sock co gia 400 000/1 tai khoan");
            Console.WriteLine("Ten ban la gi ?");
            ten = (Console.ReadLine());
            Console.WriteLine("Ban muon mua loai tai khoan nao nhi ?(nhap dung dinh dang HMA, VIP72, sock)");
            loai_san_pham = (Console.ReadLine());
            Console.WriteLine("Ban muon mua bao nhieu tai khoan?");
            so_luong = Convert.ToInt32(Console.ReadLine());
            switch (loai_san_pham)
            {
                case "HMA":
                    tong_tien = HMA * so_luong;
                    break;
                case "VIP72":
                    tong_tien = VIP72 * so_luong;
                    break;
                case "sock":
                    tong_tien = sock * so_luong;
                    break;
                default:
                    Console.WriteLine("Ban nhap sai roi , tat di bat lai nha ^^");
                    break;
            }

            if (so_luong >= 1 && so_luong <= 10)
            {
                tien_giam = tong_tien * 1 / 10;
            }
            else if (so_luong > 10 && so_luong < 20)
            {
                Console.WriteLine("");
                tien_giam = tong_tien * 2 / 10;
            }
            else
            {
                tien_giam = tong_tien * 3 / 10;
            }
            int tien_phai_tra = tong_tien - tien_giam;
            Console.WriteLine("Hoa don");
            Console.WriteLine("Ten khach hang : " + ten);
            Console.WriteLine("so tien khi chua giam gia: " + tong_tien);
            Console.WriteLine("So tien giam gia : " + tien_giam);
            Console.WriteLine("So tien phai tra la: " + tien_phai_tra);
            if (tien_phai_tra >= 100000 && tien_phai_tra <= 200000)
            {
                Console.WriteLine("Ban duoc tang 5 point vao acc");
                Console.ReadLine();
            }
            else if (tien_phai_tra > 200000 && tien_phai_tra <= 400000)
            {
                Console.WriteLine("Ban duoc tang 10 point vao acc");
                Console.ReadLine();
            }
            else if (tien_phai_tra > 400000) ;
            {
                Console.WriteLine("Ban duoc tang 15 point vao acc");
                Console.ReadLine();
            }
            Console.ReadLine();
        }
    }
}