





"""simple docstring"""




def  a_       (							_lowercase = 20     ):

						try:
												_UpperCamelCase    :      Any						     =					int(_lowercase     )
						except (TypeError, ValueError):
												raise TypeError('''Parameter n must be int or castable to int.'''     )
						if n <= 0:
												raise ValueError('''Parameter n must be greater than or equal to one.'''     )
						_UpperCamelCase    :      int						     =					0
						while 1:
												i += n * (n - 1)
												_UpperCamelCase    :      str						     =					0
												for j in range(2 ,		_lowercase     ):
																		if i % j != 0:
																								_UpperCamelCase    :      str						     =					1
																								break
												if nfound == 0:
																		if i == 0:
																								_UpperCamelCase    :      Optional[Any]						     =					1
																		return i
						return None


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










"""simple docstring"""




def  a_       (							_lowercase ,		_lowercase     ):
						sequence.append(_lowercase     )

						_UpperCamelCase    :      int						     =					0
						while sequence[index] != target:
												index += 1

						sequence.pop()

						if index == len(_lowercase     ):
												return None

						return index


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

						UpperCamelCase_     =input("""Enter a single number to be found in the list:\n""")
						UpperCamelCase_     =int(target_input)
						UpperCamelCase_     =sentinel_linear_search(sequence, target)
						if result is not None:
												print(F"{target} found at positions: {result}")
						else:
												print("""Not found""")



