Този while цикъл така и не го разбрах явно.... Само тази задача не успях да реша от пробния изпит. Ще се радвам да ми кажете къде бъркам.

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

        int performerMoney = Integer.parseInt(scan.nextLine());

        String command = scan.nextLine();

        int count = 0;
        int pricePerGuest = 0;
        int diff = 0;
        int totalMoney = 0;

        while (!command.equals("The restaurant is full")) {
            int guests = Integer.parseInt(scan.nextLine());

            if (guests < 5) {
                pricePerGuest = 100;
            } else {
                pricePerGuest = 70;
            }

            count = count + guests;

            totalMoney = pricePerGuest * count;

            diff = Math.abs(totalMoney - performerMoney);
        }

        if (diff < performerMoney) {
            System.out.printf("You have %d guests and %d leva left.", count, diff);
        } else {
            System.out.printf("You have %d guests and %d leva income, but no singer.", count, totalMoney);
        }

    }
}