PhoneBill_Telerik

using System;
namespace PhoneBill
{
    class Program
    {
        static void Main(string[] args)
        {
            int texts = int.Parse(Console.ReadLine());
            int minutes = int.Parse(Console.ReadLine());
            double planCost = 12.00;
            double totalTax = 0.00;

            if (texts < 20 && minutes < 60)
            {
                Console.WriteLine("0 additional messages for 0.00 levas");
                Console.WriteLine("0 additional minutes for 0.00 levas");
                Console.WriteLine("0.00 additional taxes");
                Console.WriteLine("12.00 total bill");
            }
            else
            {
                double chargeText = 0.00;
                double chargeMinutes = 0.00;
                double taxOnText = 0.00;
                double taxOnMins = 0.00;

                if (texts > 20)
                {
                    chargeText = (texts - 20) * 0.06;
                    taxOnText = 0.2 * chargeText;
                    totalTax += taxOnText;
                    Console.WriteLine($"{texts - 20} additional messages for {chargeText:F2} levas");
                }
                if (minutes > 60)
                {
                    chargeMinutes = (minutes - 60) * 0.1;
                    taxOnMins = 0.2 * chargeMinutes;
                    totalTax += taxOnMins;
                    Console.WriteLine($"{minutes - 60} additional minutes for {chargeMinutes:F2} levas");
                }
                Console.WriteLine($"{totalTax:f2} additional taxes");
                Console.WriteLine($"{planCost + taxOnText + taxOnMins + chargeText + chargeMinutes:F2} total bill");
            }
        }
    }
}