

def 	__snake_case		(      __UpperCamelCase     :      List[str]							,__UpperCamelCase     :      Optional[Any]  ):



      """simple docstring"""

      return int((input_a, input_a).count(0  ) == 0  )

def 	__snake_case		(      ):



      """simple docstring"""

      assert and_gate(0							,0  ) == 0
      assert and_gate(0							,1  ) == 0
      assert and_gate(1							,0  ) == 0
      assert and_gate(1							,1  ) == 1


if __name__ == "__main__":
      test_and_gate()
      print(and_gate(1, 0))
      print(and_gate(0, 0))
      print(and_gate(0, 1))
      print(and_gate(1, 1))



"""simple docstring"""







def      lowercase			(				A_       )->      bool:
  '''simple docstring'''







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

  a						:		Tuple      							=			sorted(string.lower()       )
  return len(A_       ) == len(set(A_       )       )


if __name__ == "__main__":
 __lowercase    					=      input("""Enter a string """).strip()

 __lowercase    					=      is_isogram(input_str)
 print(f'''{input_str} is {'an' if isogram else 'not an'} isogram.''')






