






"""simple docstring"""






def 					_A			(__a = 50							) ->       int:
    """simple docstring"""






    SCREAMING_SNAKE_CASE_      :  Tuple    						=		[[0] * 3 for _ in range(length + 1							)]

    for row_length in range(length + 1							):
        for tile_length in range(2    ,				5							):
            for tile_start in range(row_length - tile_length + 1							):
                different_colour_ways_number[row_length][tile_length - 2] += (
                    different_colour_ways_number[row_length - tile_start - tile_length][
                        tile_length - 2
                    ]
                    + 1
                )

    return sum(different_colour_ways_number[length]							)


if __name__ == "__main__":
  print(f'''{solution() = }''')










'''simple docstring'''







def  SCREAMING_SNAKE_CASE_       (UpperCamelCase				,			UpperCamelCase      )      ->       int:
							return abs(UpperCamelCase      ) if a == 0 else greatest_common_divisor(b % a				,			UpperCamelCase      )





def  SCREAMING_SNAKE_CASE_       (UpperCamelCase				,			UpperCamelCase      )      ->       int:
							while y:  # --> when y=0 then loop will terminate and return x as final GCD.
														lowerCamelCase__  ,		lowerCamelCase__					:	Tuple         =       y, x % y
							return abs(UpperCamelCase      )





def  SCREAMING_SNAKE_CASE_       ()      ->       Tuple:
							try:
														lowerCamelCase__					:	Dict         =       input("""Enter two integers separated by comma (,): """      ).split(""","""      )
														lowerCamelCase__					:	Any         =       int(nums[0]      )
														lowerCamelCase__					:	Optional[Any]         =       int(nums[1]      )
														print(
														    f'''greatest_common_divisor({num_a}, {num_a}) = '''
														    f'''{greatest_common_divisor(UpperCamelCase				,			UpperCamelCase      )}'''      )
														print(f'''By iterative gcd({num_a}, {num_a}) = {gcd_by_iterative(UpperCamelCase				,			UpperCamelCase      )}'''      )
							except (IndexError, UnboundLocalError, ValueError):
														print("""Wrong input"""      )


if __name__ == "__main__":
			main()

