KursovaRabota_Transport

import java.util.Scanner;

public class Transport {
    public static void main(String[] args) {


        Scanner sc = new Scanner(System.in);


        int n = Integer.parseInt(sc.nextLine());
        String time = sc.nextLine();
        double price = 0;


        if (n < 20 && time.equals("day")) {
            price = 0.70 + n * 0.79;
        }  else if (n < 20 && time.equals("night")) {
            price = 0.70 + n * 0.90;
        }

        if (n >= 20 && n < 100) {
            price = n * 0.09;
        }

        if (n >= 100) {
            price = n * 0.06;
        }

        System.out.println(price);
    }
}