08. Fuel Tank - Part 2 (ternary operator)

using System;

namespace FuelTank2
{
    class Program
    {
        static void Main(string[] args)
        {
            string fuel = Console.ReadLine();
            double liter = double.Parse(Console.ReadLine());
            string cart = Console.ReadLine();
            double sum = 0;

            if (fuel == "Gas")
            {
                sum = cart == "No" ? 0.93 : 0.85;
            }
            else if (fuel == "Gasoline")
            {
                sum = cart == "No" ? 2.22 : 2.04;
            }
            else if (fuel == "Diesel")
            {
                sum = cart == "No" ? 2.33 : 2.21;
            }

            sum = liter > 25 ? sum *= 0.9 : liter >= 20 ? sum *= 0.92 : sum;

            Console.WriteLine($"{sum * liter:F2} lv.");
        }
    }
}