


"""simple docstring"""






def      lowerCamelCase       (     _UpperCamelCase		:      str							)		->       bool:

							'''simple docstring'''



							if not all(x.isalpha() for x in string							):
														raise ValueError("""String must only contain alphabetic characters."""							)

							__UpperCAmelCase   :						Optional[int]      							=					sorted(string.lower()							)
							return len(_UpperCamelCase							) == len(set(_UpperCamelCase							)							)


if __name__ == "__main__":
							UpperCAmelCase    :     Optional[Any]   						=		input('Enter a string ').strip()

							UpperCAmelCase    :     Optional[Any]   						=		is_isogram(input_str)
							print(F"{input_str} is {'an' if isogram else 'not an'} isogram.")




"""simple docstring"""






def      lowerCamelCase       (     _UpperCamelCase		:      int = 4_0_0_0_0_0_0							)		->       int:

							'''simple docstring'''



							__UpperCAmelCase   :						int      							=					[0, 1]
							__UpperCAmelCase   :						Optional[Any]      							=					0
							while fib[i] <= n:
														fib.append(fib[i] + fib[i + 1]							)
														if fib[i + 2] > n:
																					break
														i += 1
							__UpperCAmelCase   :						str      							=					0
							for j in range(len(_UpperCamelCase							) - 1							):
														if fib[j] % 2 == 0:
																					total += fib[j]

							return total


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