p_CheapestTransport

import java.util.Scanner;
import java.lang.String;

public class CheapestTransport {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);

        int kM = Integer.parseInt(console.nextLine());
        String time = console.nextLine();

        double taxiDay = 0.79;
        double taxiNight = 0.90;
        double serviceFee = 0.70;
        double bus = 0.09;
        double train =  0.06;
        double cheapestTransport = 0;

        if(kM <= 20){
            if(time.equals("day")){
                cheapestTransport = kM * taxiDay + serviceFee;
                System.out.printf("taxi: %.2f", cheapestTransport);
            }else{
                cheapestTransport = kM * taxiNight +serviceFee;
                System.out.printf("taxi: %.2f", cheapestTransport);
            }
        }else if(kM > 20 && kM <= 100){
            cheapestTransport = kM * bus;
            System.out.printf("bus: %.2f", cheapestTransport);
        }else if(kM > 100){
            cheapestTransport = kM * train;
            System.out.printf("train: %.2f", cheapestTransport);
        }

    }
}