"""simple docstring"""


def 					UpperCAmelCase    (		UpperCAmelCase						,					UpperCAmelCase					)				->      list[str]:
     return [sentence[i : i + ngram_size] for i in range(len(UpperCAmelCase					) - ngram_size + 1					)]


if __name__ == "__main__":
    from doctest import testmod

    testmod()





'''simple docstring'''






from math import ceil







def 				UpperCamelCase_			(    A__					:   int = 10_01					):
  '''simple docstring'''





  lowerCAmelCase_			:      List[Any]			=   1

  for i in range(1							,    int(ceil(n / 2.0					)					)					):
    lowerCAmelCase_			:      int			=   2 * i + 1
    lowerCAmelCase_			:      Tuple			=   2 * i
    lowerCAmelCase_			:      Tuple			=   total + 4 * odd**2 - 6 * even

  return total


if __name__ == "__main__":
  import sys

  if len(sys.argv) == 1:
    print(solution())
  else:
    try:
      __A					:  str											=      int(sys.argv[1])
      print(solution(n))
    except ValueError:
      print("Invalid entry - please enter a number")



