TransportPrice

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

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

            double taxiDay = 0.70 + km * 0.79;
            double taxiNight = 0.70 + km * 0.90;
            double bus = 0.09 * km;
            double train = 0.06 * km;

            if (km < 20 && vreme == "day")
            {
                Console.WriteLine($"{taxiDay:F2}");
            }
            else if (km < 20 && vreme == "night")
            {
                Console.WriteLine($"{taxiNight:F2}");
            }
            else if (km >= 20 && km < 100)
            {
                Console.WriteLine($"{bus:F2}");
            }
            else if (km >= 100 )
            {
                Console.WriteLine($"{train:F2}");
            }


        }
    }
}