new_contents: """ Project Euler problem #6. """
  
  
  def problem():
      """ Solve the problem.
  
      Find the difference between the sum of the squares of the first one hundred
      natural numbers and the square of the sum.
  
      Answer: 25164150
  
      """
      sum_of_squares = sum([n ** 2 for n in range(101)])
      square_of_sums = sum(range(101)) ** 2
      return square_of_sums - sum_of_squares
  
  
  if __name__ == '__main__':
      print problem()
  
subject: Solve 6.