PriceToTransport

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

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            double km = double.Parse(Console.ReadLine());
            string dayTime = Console.ReadLine();

            double taxiStrart = 0.70;
            double dayTaxi = 0.79;
            double nightTaxi = 0.90;
            double bus = 0.09;
            double train = 0.06;

            double result;

            if (km < 20 && dayTime == "day")
            {
                result = (dayTaxi * km) + taxiStrart;
            }
            else if (km <= 20 && dayTime == "night")
            {
                result = (nightTaxi * km) + taxiStrart;
            }
            else if (km > 20 && dayTime == "day")
            {
                result = (bus * km);
            }
            else if (km > 100 && dayTime == "night")
            {
                result = (train * km);
            }
            Console.WriteLine(result);


        }

    }
}