a     :			int					    =						{
    """0000""": """0""",
    """0001""": """1""",
    """0010""": """2""",
    """0011""": """3""",
    """0100""": """4""",
    """0101""": """5""",
    """0110""": """6""",
    """0111""": """7""",
    """1000""": """8""",
    """1001""": """9""",
    """1010""": """a""",
    """1011""": """b""",
    """1100""": """c""",
    """1101""": """d""",
    """1110""": """e""",
    """1111""": """f""",
}
def 		snake_case__  (		lowercase				):
   lowerCAmelCase_:       Optional[Any]         =  str(lowercase				).strip()

   # Exceptions
   if not binary_str:
      raise ValueError("Empty string was passed to the function"				)
   lowerCAmelCase_:       Union[str, Any]         =  binary_str[0] == "-"
   lowerCAmelCase_:       Optional[Any]         =  binary_str[1:] if is_negative else binary_str
   if not all(char in "01" for char in binary_str				):
      raise ValueError("Non-binary value was passed to the function"				)

   lowerCAmelCase_:       List[str]         =  (
       "0" * (4 * (divmod(len(lowercase				)       ,							4				)[0] + 1) - len(lowercase				)) + binary_str
   )

   lowerCAmelCase_:       Dict         =  []
   for x in range(0       ,							len(lowercase				)       ,							4				):
      hexadecimal.append(BITS_TO_HEX[binary_str[x : x + 4]]				)
   lowerCAmelCase_:       str         =  "0x" + "".join(lowercase				)

   return "-" + hexadecimal_str if is_negative else hexadecimal_str


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

 testmod()
def 		snake_case__  (		lowercase = 998001				):

   # fetches the next number
   for number in range(n - 1       ,							9999       ,							-1				):
      lowerCAmelCase_:       str         =  str(lowercase				)

      # checks whether 'str_number' is a palindrome.
      if str_number == str_number[::-1]:
         lowerCAmelCase_:       List[str]         =  999

         # if 'number' is a product of two 3-digit numbers
         # then number is the answer otherwise fetch next number.
         while divisor != 99:
            if (number % divisor == 0) and (len(str(number // divisor				)				) == 3.0):
               return number
            divisor -= 1
   raise ValueError("That number is larger than our acceptable range."				)


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