



def 							__lowercase     (				__lowerCAmelCase							:       Tuple     ):
							return str(__lowerCAmelCase     ) == str(__lowerCAmelCase     )[::-1]






def 							__lowercase     (				__lowerCAmelCase							:       List[Any]     ):
							return int(__lowerCAmelCase     ) + int(str(__lowerCAmelCase     )[::-1]     )






def 							__lowercase     (				__lowerCAmelCase							:       Optional[int] = 1_0_0_0_0     ):
							a__    =  []
							for num in range(1      ,					__lowerCAmelCase     ):
														a__    =  0
														a__    =  num
														while iterations < 5_0:
																					a__    =  sum_reverse(__lowerCAmelCase     )
																					iterations += 1
																					if is_palindrome(__lowerCAmelCase     ):
																												break
														else:
																					lychrel_nums.append(__lowerCAmelCase     )
							return len(__lowerCAmelCase     )


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








from math import pi






def 							__lowercase     (				__lowerCAmelCase							:       int      ,					__lowerCAmelCase							:       int     ):
							return 2 * pi * radius * (angle / 3_6_0)


if __name__ == "__main__":
						print(arc_length(90, 10))




