

"""simple docstring"""




def 						A							(  snake_case__     ):




			'''simple docstring'''


			assert (
			    isinstance(snake_case__		,					snake_case__     ) and number_of_steps > 0
			), f"""number_of_steps needs to be positive integer, your input {number_of_steps}"""
			if number_of_steps == 1:
						return 1
			SCREAMING_SNAKE_CASE__				,		SCREAMING_SNAKE_CASE__										=   1, 1
			for _ in range(number_of_steps - 1     ):
						SCREAMING_SNAKE_CASE__				,		SCREAMING_SNAKE_CASE__										=   current + previous, current
			return current


if __name__ == "__main__":
						import doctest

						doctest.testmod()





"""simple docstring"""




def 						A							(  snake_case__		,					snake_case__     ):




			'''simple docstring'''


			SCREAMING_SNAKE_CASE__										=   len(snake_case__     )
			SCREAMING_SNAKE_CASE__										=   len(snake_case__     )
			SCREAMING_SNAKE_CASE__										=   (
			    first_str_length if first_str_length > second_str_length else second_str_length
			)
			SCREAMING_SNAKE_CASE__										=   []
			for char_count in range(snake_case__     ):
						if char_count < first_str_length:
									output_list.append(first_str[char_count]     )
						if char_count < second_str_length:
									output_list.append(second_str[char_count]     )
			return "".join(snake_case__     )


if __name__ == "__main__":
						print(alternative_string_arrange("AB", "XYZ"), end=" ")


