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

class GradeSwitch
{
    static void Main()
    {
        Console.Write("Enter delivery type (X: Express|R:Regular) : ");
        string t = (Console.ReadLine());


        if (t == "R" || t == "E")
        {
            if (t == "R")
            {
                Console.Write("Enter weight of book (kilograms) : ");
                int x = int.Parse(Console.ReadLine());

                if (x > 0)
                {
                    if (0 <= x * 1000 && x * 1000 <= 2000) { Console.WriteLine("You have to pay {0:f2} bt. for sending {1} Type with {2:f2} kilograms", ((x * 1000) * 0.25), t, x); }
                    if (2000 < x * 1000 && x * 1000 <= 5000) { Console.WriteLine("You have to pay {0:f2} bt. for sending {1} Type with {2:f2} kilograms", (((2 * 1000) * 0.25)) + ((x - 2) * 1000 * 0.35), t, x); }
                    if (x * 1000 > 5000) { Console.WriteLine("You have to pay {0:f2} bt. for sending {1} Type with {2:f2} kilograms", (((2 * 1000) * 0.25)) + (((3 * 1000) * 0.35)) + ((x - 5) * 1000 * 0.45), t, x); }
                }
                else { Console.WriteLine("Invalid Weight"); }
            }
            if (t == "E")
            {
                Console.Write("Enter weight of book (kilograms) : ");
                int x = int.Parse(Console.ReadLine());

                if (x > 0)
                {
                    if (0 <= x * 1000 && x * 1000 <= 2000) { Console.WriteLine("You have to pay {0:f2} bt. for sending {1} Type with {2:f2} kilograms", ((x * 1000) * 0.25) + 50, t, x); }
                    if (2000 < x * 1000 && x * 1000 <= 5000) { Console.WriteLine("You have to pay {0:f2} bt. for sending {1} Type with {2:f2} kilograms", (((2 * 1000) * 0.25)) + ((x - 2) * 1000 * 0.35) + 50, t, x); }
                    if (x * 1000 > 5000) { Console.WriteLine("You have to pay {0:f2} bt. for sending {1} Type with {2:f2} kilograms", (((2 * 1000) * 0.25)) + (((3 * 1000) * 0.35)) + ((x - 5) * 1000 * 0.45) + 50, t, x); }
                }
                else { Console.WriteLine("Invalid Weight"); }
            }
        }
        else { Console.WriteLine("Invalid Type"); }
        Console.ReadLine();
    }


}