TransportPrice

import java.util.Scanner;

    public class TransportPrice {
    public static void main(String []args){
        Scanner scanner = new Scanner(System.in);
            int distance = Integer.parseInt(scanner.nextLine());
            String dayOrNight = scanner.nextLine();
            Double price = 0.0;

            if (distance >= 100) {
                price = 0.06 * distance;  //travel with train
                } else if (distance >= 20 && distance < 100) {
                    price = 0.09 * distance; //travel with bus
                }


            if (distance < 20 ){ // travel with taxi
                if (dayOrNight.equals("day")){
                    price = (distance * 0.79) + 0.70; // day rate
                } else if (dayOrNight.equals("night")){
                    price = (distance * 0.90) + 0.70; // night rate
                }

             }


        System.out.printf("%.2f", price);


     }
}