





def    A				(							UpperCAmelCase  ,  UpperCAmelCase				):
					_snake_case       :					Dict				       =   ""
					for word_or_phrase in separated:
										if not isinstance(UpperCAmelCase  ,  UpperCAmelCase				):
															raise Exception("join() accepts only strings to be joined"				)
										joined += word_or_phrase + separator
					return joined.strip(UpperCAmelCase				)


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

							testmod()






def    A				(							UpperCAmelCase				):
					return str(UpperCAmelCase				) == str(UpperCAmelCase				)[::-1]







def    A				(							UpperCAmelCase				):
					return int(UpperCAmelCase				) + int(str(UpperCAmelCase				)[::-1]				)







def    A				(							UpperCAmelCase = 10_000				):
					_snake_case       :					Optional[int]				       =   []
					for num in range(1  ,  UpperCAmelCase				):
										_snake_case       :					Optional[Any]				       =   0
										_snake_case       :					Optional[int]				       =   num
										while iterations < 50:
															_snake_case       :					Optional[Any]				       =   sum_reverse(UpperCAmelCase				)
															iterations += 1
															if is_palindrome(UpperCAmelCase				):
																				break
										else:
															lychrel_nums.append(UpperCAmelCase				)
					return len(UpperCAmelCase				)


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