input: Write a function to determine if two integers are equal. If they are equal, return "The two integers are equal"; otherwise, return "The two integers are not equal". If either integer is not provided, return "Input not provided".
  assert check_equality(10, 10)=="The two integers are equal"
  assert check_equality(5, 10)=="The two integers are not equal"
  assert check_equality(None, 10)=="Input not provided"
  assert check_equality(5, None)=="Input not provided"
  assert check_equality(None, None)=="Input not provided"
output: def check_equality(a=None, b=None):
      if a is None or b is None:
          return "Input not provided"
      elif a == b:
          return "The two integers are equal"
      else:
          return "The two integers are not equal"