dichvummo

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

namespace Dichvummo
{
    class Program
    {
        static void Main(string[] args)
        {
            string name ="";
            int dichvu , thanhtien , soluong =0;
            Console.WriteLine("Chao mung ban den voi dich vu mmo");
            Console.WriteLine("Ten cua ban la");
            name = Console.ReadLine();
            Console.WriteLine("Chao"+" "+name+" "+"hay lua dich vu ban muon");
            Console.WriteLine("Nhan 1 neu ban muon mua acc HMA");
            Console.WriteLine("Nhan 2 neu ban muon mua acc Vip 72");
            Console.WriteLine("Nhan 3 neu ban muon mua acc Sockescort");
            dichvu = Convert.ToInt32(Console.ReadLine());
            switch (dichvu)
            {
                case 1:
                    Console.WriteLine("1 acc HMA gia 100.000d");
                    Console.WriteLine("Vui long cho biet so luong can mua");
                    soluong=Convert.ToInt32(Console.ReadLine());
                    if (soluong == 0)
                    {
                        Console.WriteLine("Vui long chon it nhat 1 account");
                    }
                    else if (soluong > 0 && soluong <= 10)
                    {
                        thanhtien =(soluong*100000)-(soluong * 100000) * 10/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    else if (soluong > 10 && soluong <= 20)
                    {
                        thanhtien =(soluong * 100000) - (soluong * 100000) * 20/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    else
                    {
                        thanhtien = (soluong * 100000) - (soluong * 100000) * 30/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    break;
                case 2:
                    Console.WriteLine("1 acc Vip 72 gia 200.000d");
                    Console.WriteLine("Vui long cho biet so luong can mua");
                    soluong = Convert.ToInt32(Console.ReadLine());
                    if (soluong == 0)
                    {
                        Console.WriteLine("Vui long chon it nhat 1 account");
                    }
                    else if (soluong > 0 && soluong <= 10)
                    {
                        thanhtien = (soluong * 200000) - (soluong * 200000) *10/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    else if (soluong > 10 && soluong <= 20)
                    {
                        thanhtien = (soluong * 200000) - (soluong * 200000) * 20/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    else
                    {
                        thanhtien = (soluong * 200000) - (soluong * 200000) * 30/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    break;
                case 3:
                    Console.WriteLine("1 acc Sockescort gia 300.000d");
                    Console.WriteLine("Vui long cho biet so luong can mua");
                    soluong = Convert.ToInt32(Console.ReadLine());
                    if (soluong == 0)
                    {
                        Console.WriteLine("Vui long chon it nhat 1 account");
                    }
                    else if (soluong > 0 && soluong <= 10)
                    {
                        thanhtien = (soluong * 300000) - (soluong * 300000) * 10/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    else if (soluong > 10 && soluong <= 20)
                    {
                        thanhtien = (soluong * 300000) - (soluong * 300000) * 20/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    else
                    {
                        thanhtien = (soluong * 300000) - (soluong * 300000) * 30/100;
                        Console.WriteLine("Tong so tien phai tra la" + " " + thanhtien);
                    }
                    break;
            }
            Console.WriteLine("Hoa don cua ban");
            Console.WriteLine("Ten nguoi mua" + " " + name);
            Console.WriteLine("Mua" + " " + soluong);
            Console.WriteLine("Tong gia tri" + " "+ ̶t̶̶h̶̶a̶̶n̶̶h̶̶t̶̶i̶̶e̶̶n̶);
            if (thanhtien >= 100000 && thanhtien <= 200000)
            {
                Console.WriteLine("Ban duoc cong them 5 point vao tai khoan");
            }
            else if (thanhtien > 200000 && thanhtien <= 400000)
            {
                Console.WriteLine("Ban duoc cong them 10 point vao tai khoan");
            }
            else
            {
                Console.WriteLine("Ban duoc cong them 5 point vao tai khoan");
            }
            Console.ReadLine();
        }
    }
}