


from __future__ import annotations




def    a   (							A__      ,    A__							)	-> List[Any]:




      '''simple docstring'''

      SCREAMING_SNAKE_CASE__       :  Tuple						     =		position
      SCREAMING_SNAKE_CASE__       :  Optional[Any]						     =		[
          (y + 1, x + 2),
          (y - 1, x + 2),
          (y + 1, x - 2),
          (y - 1, x - 2),
          (y + 2, x + 1),
          (y + 2, x - 1),
          (y - 2, x + 1),
          (y - 2, x - 1),
      ]
      SCREAMING_SNAKE_CASE__       :  Tuple						     =		[]

      for position in positions:
            SCREAMING_SNAKE_CASE__       :  List[str]						     =		position
            if 0 <= y_test < n and 0 <= x_test < n:
                  permissible_positions.append(__lowerCamelCase							)

      return permissible_positions




def    a   (							A__							)	-> int:




      '''simple docstring'''

      return not any(elem == 0 for row in board for elem in row							)




def    a   (							A__      ,    A__      ,    A__							)	-> Tuple:




      '''simple docstring'''

      if is_complete(__lowerCamelCase							):
            return True

      for position in get_valid_pos(__lowerCamelCase      ,    len(__lowerCamelCase							)							):
            SCREAMING_SNAKE_CASE__       :  Dict						     =		position

            if board[y][x] == 0:
                  SCREAMING_SNAKE_CASE__       :  Any						     =		curr + 1
                  if open_knight_tour_helper(__lowerCamelCase      ,    __lowerCamelCase      ,    curr + 1							):
                        return True
                  SCREAMING_SNAKE_CASE__       :  Optional[int]						     =		0

      return False




def    a   (							A__							)	-> Dict:




      '''simple docstring'''

      SCREAMING_SNAKE_CASE__       :  Optional[Any]						     =		[[0 for i in range(__lowerCamelCase							)] for j in range(__lowerCamelCase							)]

      for i in range(__lowerCamelCase							):
            for j in range(__lowerCamelCase							):
                  SCREAMING_SNAKE_CASE__       :  List[str]						     =		1
                  if open_knight_tour_helper(__lowerCamelCase      ,    (i, j)      ,    1							):
                        return board
                  SCREAMING_SNAKE_CASE__       :  List[Any]						     =		0

      SCREAMING_SNAKE_CASE__       :  str						     =		f"""Open Kight Tour cannot be performed on a board of size {n}"""
      raise ValueError(__lowerCamelCase							)


if __name__ == "__main__":
    import doctest

    doctest.testmod()








def      UpperCamelCase   (       __lowerCamelCase	:					str = "The quick brown fox jumps over the lazy dog"							,   ):
       snake_case			:  Dict     							= set()

       # Replace all the whitespace in our sentence
       snake_case			:  List[Any]     							= input_str.replace(" "							,   ""       )
       for alpha in input_str:
              if "a" <= alpha.lower() <= "z":
                     frequency.add(alpha.lower()       )
       return len(__lowerCamelCase       ) == 26


def      UpperCamelCase   (       __lowerCamelCase	:					str = "The quick brown fox jumps over the lazy dog"							,   ):
       snake_case			:  Optional[int]     							= [False] * 26
       for char in input_str:
              if char.islower():
                     snake_case			:  Dict     							= True
              elif char.isupper():
                     snake_case			:  Optional[Any]     							= True
       return all(__lowerCamelCase       )


def      UpperCamelCase   (       __lowerCamelCase	:					str = "The quick brown fox jumps over the lazy dog"							,   ):
       return len({char for char in input_str.lower() if char.isalpha()}       ) == 26


def      UpperCamelCase   (       ):
       from timeit import timeit

       snake_case			:  Tuple     							= "from __main__ import is_pangram, is_pangram_faster, is_pangram_fastest"
       print(timeit("is_pangram()"							,   setup=__lowerCamelCase       )       )
       print(timeit("is_pangram_faster()"							,   setup=__lowerCamelCase       )       )
       print(timeit("is_pangram_fastest()"							,   setup=__lowerCamelCase       )       )
       # 5.348480500048026, 2.6477354579837993, 1.8470395830227062
       # 5.036091582966037, 2.644472333951853,  1.8869528750656173


if __name__ == "__main__":
   import doctest

   doctest.testmod()
   benchmark()





