Transport Price

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

namespace Transport_Price
{
    class Program
    {
        static void Main(string[] args)
        {
            double TaxyStart = 0.7d;
            double TaxiDay = 0.79d;
            double TaxiNight = 0.9d;
            double Autobus = 0.09d;
            double Train = 0.06d;
            double PriceTaxi = 0.0d;
            double PriceBus = 0.0d;
            double PriceTrain = 0.0d;
            double Distance = double.Parse(Console.ReadLine());
            string daynight = Console.ReadLine();
            if (daynight == "day")
            {
                if (Distance < 20)
                {
                    PriceTaxi = TaxyStart + TaxiDay * Distance;
                    Console.WriteLine(PriceTaxi);
                }
                else if (Distance >= 20 && Distance < 100)
                {
                    PriceTaxi = TaxyStart + TaxiDay * Distance;
                    PriceBus = Autobus * Distance;
                    double result = Math.Min(PriceTaxi, PriceBus);
                    Console.WriteLine("{0:0.00}",result);
                }
                else if (Distance >= 100)
                {
                    PriceTaxi = TaxyStart + TaxiDay * Distance;
                    PriceBus = Autobus * Distance;
                    PriceTrain = Train * Distance;
                    double result = Math.Min(PriceTaxi, Math.Min(PriceBus, PriceTrain));
                    Console.WriteLine("{0:0.00}", result);
                }
            }
            if (daynight == "night")
            {
                if (Distance < 20)
                {
                    PriceTaxi = TaxyStart + TaxiNight * Distance;
                    Console.WriteLine("{0:0.00}", PriceTaxi);
                }
                else if (Distance >= 20 && Distance < 100)
                {
                    PriceTaxi = TaxyStart + TaxiNight * Distance;
                    PriceBus = Autobus * Distance;
                    double result = Math.Min(PriceTaxi, PriceBus);
                    Console.WriteLine("{0:0.00}", result);
                }
                else if (Distance >= 100)
                {
                    PriceTaxi = TaxyStart + TaxiNight * Distance;
                    PriceBus = Autobus * Distance;
                    PriceTrain = Train * Distance;
                    double result = Math.Min(PriceTaxi, Math.Min(PriceBus, PriceTrain));
                    Console.WriteLine("{0:0.00}", result);
                }
            }
        }
    }
}