08. Pet Shop

package com.company;

import java.util.Scanner;

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

        int countDog = Integer.parseInt(scanner.nextLine());
        int countCat = Integer.parseInt(scanner.nextLine());

        double onePackDog = 2.50;
        double onePackCat = 4;

        double totalDog = countDog * onePackDog;
        double totalCat = countCat * onePackCat;

        double totalSum = totalCat + totalDog;

//        System.out.printf("%f lv.", totalSum);
        System.out.println(totalSum + " lv.");
    }
}