Здравей колега,

Не знам дали си намери грешката,но може би няма сгрешени теастове.

Ето ти един код (100/100).

https://pastebin.com/eu2JKXUG

Ето решение и на java за тези които им трябва.

public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String fruit = scanner.nextLine();
        String size = scanner.nextLine();
        int orderSets = Integer.parseInt(scanner.nextLine());

        double fruitPrice = 0;
        double sizeNumber = 0;

        switch (fruit) {
            case "Watermelon":
                if (size.equals("small")) {
                    sizeNumber = 2;
                    fruitPrice = 56;
                } else if (size.equals("big")) {
                    sizeNumber = 5;
                    fruitPrice = 28.7;
                }
                break;
            case "Mango":
                if (size.equals("small")) {
                    sizeNumber = 2;
                    fruitPrice = 36.6;
                } else if (size.equals("big")) {
                    sizeNumber = 5;
                    fruitPrice = 19.6;
                }
                break;
            case "Pineapple":
                if (size.equals("small")) {
                    sizeNumber = 2;
                    fruitPrice = 42.1;
                } else if (size.equals("big")) {
                    sizeNumber = 5;
                    fruitPrice = 24.8;
                }
                break;
            case "Raspberry":
                if (size.equals("small")) {
                    sizeNumber = 2;
                    fruitPrice = 20;
                } else if (size.equals("big")) {
                    sizeNumber = 5;
                    fruitPrice = 15.2;
                }
                break;
        }
        double result = sizeNumber * fruitPrice * orderSets;

        if (result >= 400 && result <= 1000) {
            result *= 0.85;
        } else if (result > 1000) {
            result *= 0.5;
        }
System.out.printf("%.2f Lv.",result);
    }
}