






def 			_a   (		SCREAMING_SNAKE_CASE_							:       Any = 50  ):
					__lowerCAmelCase            = [[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() = }''')










def 			_a   (		SCREAMING_SNAKE_CASE_							:       list[int]  ):
					__lowerCAmelCase            = len(SCREAMING_SNAKE_CASE_  )
					for i in range(SCREAMING_SNAKE_CASE_  ):
										for j in range(i + 1   ,   SCREAMING_SNAKE_CASE_  ):
															if numbers[j] < numbers[i]:
																				__lowerCAmelCase     ,							__lowerCAmelCase            = numbers[j], numbers[i]
					return numbers


if __name__ == "__main__":
					UpperCamelCase__					    =    input("""Enter numbers separated by a comma:\n""").strip()
					UpperCamelCase__					    =    [int(item) for item in user_input.split(""",""")]
					print(exchange_sort(unsorted))




