02. Family Trip

package examPrep;

import java.util.Scanner;

public class P02FamilyTrip {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        double budget = Double.parseDouble(scanner.nextLine());
        int countNights = Integer.parseInt(scanner.nextLine());
        double priceNight = Double.parseDouble(scanner.nextLine());
        int percentExpenses = Integer.parseInt(scanner.nextLine());

        if (countNights > 7) {
            priceNight = priceNight * 0.95;
        }

        double allNightsSum = countNights * priceNight;
        double otherExpenses = budget * (percentExpenses / 100.0);
        double totalSum = allNightsSum + otherExpenses;

        double diff = Math.abs(budget - totalSum);
        if (budget >= totalSum) {
            System.out.printf("Ivanovi will be left with %.2f leva after vacation.", diff);
        } else {
            System.out.printf("%.2f leva needed.", diff);
        }
    }
}