code: 
  
  
  def 							UpperCAmelCase				(     UpperCAmelCase      )->		tuple[int, int]:
  
  
  
  
  
  
  
  					'''simple docstring'''
  
  
  
  					if len(UpperCAmelCase      ) == 1:
  										return a[0], a[0]
  					else:
  										# split A into half.
  										SCREAMING_SNAKE_CASE_	      =       a[: len(UpperCAmelCase      ) // 2]
  										SCREAMING_SNAKE_CASE_	      =       a[len(UpperCAmelCase      ) // 2 :]
  
  										# 2 sub problems, 1/2 of original size.
  										SCREAMING_SNAKE_CASE_      ,SCREAMING_SNAKE_CASE_	      =       max_difference(UpperCAmelCase      )
  										SCREAMING_SNAKE_CASE_      ,SCREAMING_SNAKE_CASE_	      =       max_difference(UpperCAmelCase      )
  
  										# get min of first and max of second
  										# linear time
  										SCREAMING_SNAKE_CASE_	      =       min(UpperCAmelCase      )
  										SCREAMING_SNAKE_CASE_	      =       max(UpperCAmelCase      )
  
  										# 3 cases, either (small1, big1),
  										# (min_first, max_second), (small2, big2)
  										# constant comparisons
  										if biga - smalla > max_second - min_first and biga - smalla > biga - smalla:
  															return smalla, biga
  										elif biga - smalla > max_second - min_first:
  															return smalla, biga
  										else:
  															return min_first, max_second
  
  
  if __name__ == "__main__":
  		import doctest
  
  		doctest.testmod()
  
  
  
style_context: 
  
  
  def 							UpperCAmelCase				(     UpperCAmelCase      )->		bool:
  
  
  
  
  
  
  
  					'''simple docstring'''
  
  
  
  					if not isinstance(UpperCAmelCase				,UpperCAmelCase      ):
  										SCREAMING_SNAKE_CASE_	      =       f'''Input value of [number={number}] must be an integer'''
  										raise TypeError(UpperCAmelCase      )
  					if number < 0 or number % 2 == 1:
  										return False
  					SCREAMING_SNAKE_CASE_	      =       int(number**0.5      )
  					return number == number_sqrt * (number_sqrt + 1)
  
  
  if __name__ == "__main__":
  		import doctest
  
  		doctest.testmod()
  
  
  