def square_of_sum(number: int) -> int:
    sum: int = 0
    for integer in range(1, number + 1):
        sum += integer
    return sum**2


def sum_of_squares(number: int) -> int:
    sum: int = 0
    for integer in range(1, number + 1):
        sum += integer**2
    return sum


def difference_of_squares(number: int) -> int:
    return square_of_sum(number) - sum_of_squares(number)