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

namespace mehonatmash
{
    class Program
    {
        static void Main(string[] args)
        {
            double add , excess;
            Console.WriteLine("the beverage machine menu: ");
            Console.WriteLine("1.Instant Coffe(1)..2.40");
            Console.WriteLine("2.Black Coffe(2)....2.10");
            Console.WriteLine("3.Tea(3)............1.60");
            Console.WriteLine("4.Shoko(4)..........2.50");
            Console.WriteLine("5.Soup(5)...........3.10");
            Console.WriteLine("6.Cola(6)...........3.30");
            Console.WriteLine("7.Orange Juice(7)...3.20");
            Console.Write("Enter the code of the drink you want to buy---> ");
            int code = int.Parse(Console.ReadLine());
            Console.Write("Enter the amount of money--> ");
            double mon = double.Parse(Console.ReadLine());
            if(code == 1)
            {
                if(mon - 2.40 == 0)
                {
                    Console.WriteLine("you chose the beverage Instant Coffe that its price is 2.40, thank you for using our machine");
                }
                else if(mon - 2.40 < 0)
                {
                    add = mon - 2.40;
                    Console.WriteLine("you chose the beverage Instant Coffe that its price is 2.40 but you entered only: " + mon + " the amount of money you need to add is: " + add );
                }
                else if (mon - 2.40 > 0)
                {
                    excess = mon - 2.40;
                    if(excess % 20 == 0)
                    Console.WriteLine("you chose the beverage Instant Coffe that its price is 2.40");
                    Console.WriteLine("you are going to get excess of ");
                }
            }
            if (code == 2)
            {
                if (mon - 2.10 == 0)
                {
                    Console.WriteLine("you chose the beverage Black Coffe that its price is 2.10, thank you for using our machine");
                }
                else if (mon - 2.10 < 0)
                {
                    add = mon - 2.10;
                    Console.WriteLine("you chose the beverage Black Coffe that its price is 2.10 but you entered only: " + mon + " the amount of money you need to add is: " + add);
                }
                else if (mon - 2.10 > 0)
                {
                    excess = mon - 2.10;
                    Console.WriteLine("you chose the beverage Black Coffe that its price is 2.10");
                }
            }
            if (code == 3)
            {
                if (mon - 1.60 == 0)
                {
                    Console.WriteLine("you chose the beverage Tea that its price is 1.60, thank you for using our machine");
                }
                else if (mon - 1.60 < 0)
                {
                    add = mon - 1.60;
                    Console.WriteLine("you chose the beverage Tea that its price is 1.60 but you entered only: " + mon + " the amount of money you need to add is: " + add);
                }
                else if (mon - 1.60 > 0)
                {
                    excess = mon - 1.60;
                    Console.WriteLine("you chose the beverage Tea that its price is 1.60");
                }
            }
            if (code == 4)
            {
                if (mon - 2.50 == 0)
                {
                    Console.WriteLine("you chose the beverage Shoko that its price is 2.50, thank you for using our machine");
                }
                else if (mon - 2.50 < 0)
                {
                    add = mon - 2.50;
                    Console.WriteLine("you chose the beverage Shoko that its price is 2.50 but you entered only: " + mon + " the amount of money you need to add is: " + add);
                }
                else if (mon - 2.50 > 0)
                {
                    excess = mon - 2.50;
                    Console.WriteLine("you chose the beverage Shoko that its price is 2.50");
                }
            }
            if (code == 5)
            {
                if (mon - 3.10 == 0)
                {
                    Console.WriteLine("you chose the beverage Soup that its price is 3.10, thank you for using our machine");
                }
                else if (mon - 3.10 < 0)
                {
                    add = mon - 3.10;
                    Console.WriteLine("you chose the beverage Soup that its price is 3.10 but you entered only: " + mon + " the amount of money you need to add is: " + add);
                }
                else if (mon - 3.10 > 0)
                {
                    excess = mon - 3.10;
                    Console.WriteLine("you chose the beverage Soup that its price is 3.10");
                }
            }
            if (code == 6)
            {
                if (mon - 3.30 == 0)
                {
                    Console.WriteLine("you chose the beverage Cola that its price is 3.30, thank you for using our machine");
                }
                else if (mon - 3.30 < 0)
                {
                    add = mon - 3.30;
                    Console.WriteLine("you chose the beverage Cola that its price is 3.30 but you entered only: " + mon + " the amount of money you need to add is: " + add);
                }
                else if (mon - 3.30 > 0)
                {
                    excess = mon - 3.30;
                    Console.WriteLine("you chose the beverage Cola that its price is 3.30");
                }
            }
            if (code == 7)
            {
                if (mon - 3.20 == 0)
                {
                    Console.WriteLine("you chose the beverage Orange Juice that its price is 3.20, thank you for using our machine");
                }
                else if (mon - 3.20 < 0)
                {
                    add = mon - 3.20;
                    Console.WriteLine("you chose the beverage Orange Juice that its price is 3.20 but you entered only: " + mon + " the amount of money you need to add is: " + add);
                }
                else if (mon - 3.20 > 0)
                {
                    excess = mon - 3.20;
                    Console.WriteLine("you chose the beverage Orange Juice that its price is 3.20");
                }
            }
        }
    }
}