for (int i = 1; i <= amountDays; i++) {
            int dogFood = Integer.parseInt(scanner.nextLine());
            int catFood = Integer.parseInt(scanner.nextLine());

            dogFoodEaten += dogFood;
            catFoodEaten += catFood;

            if(i % 3 ==0){
                biscuits += (dogFood + catFood) * 0.10;
            }
        }

        totalFoodEaten = (dogFoodEaten + catFoodEaten) / totalFood;