

from __future__ import annotations

class     a__  :
			"""simple docstring"""







			def __init__(			self					,					lowercase				)     ->  None:
							'''simple docstring'''






							A__						=	data
							A__						=	None
							A__						=	None



def     lowerCAmelCase__							(		SCREAMING_SNAKE_CASE_:							Node | None					)	->					None:  # In Order traversal of the tree




				'''simple docstring'''





				if tree:
								display(tree.left					)
								print(tree.data					)
								display(tree.right					)



def     lowerCAmelCase__							(		SCREAMING_SNAKE_CASE_:							Node | None					)	->					int:




				'''simple docstring'''





				return 1 + max(depth_of_tree(tree.left					)		,				depth_of_tree(tree.right					)					) if tree else 0



def     lowerCAmelCase__							(		SCREAMING_SNAKE_CASE_:							Node					)	->					bool:




				'''simple docstring'''





				if not tree:
								return True
				if tree.left and tree.right:
								return is_full_binary_tree(tree.left					) and is_full_binary_tree(tree.right					)
				else:
								return not tree.left and not tree.right



def     lowerCAmelCase__							(		)	->					None:  # Main function for testing.




				'''simple docstring'''





				A__						=	Node(1					)
				A__						=	Node(2					)
				A__						=	Node(3					)
				A__						=	Node(4					)
				A__						=	Node(5					)
				A__						=	Node(6					)
				A__						=	Node(7					)
				A__						=	Node(8					)
				A__						=	Node(9					)

				print(is_full_binary_tree(SCREAMING_SNAKE_CASE_					)					)
				print(depth_of_tree(SCREAMING_SNAKE_CASE_					)					)
				print("Tree is: "					)
				display(SCREAMING_SNAKE_CASE_					)


if __name__ == "__main__":
	main()


'''simple docstring'''

def 			__UpperCamelCase       (   UpperCAmelCase     ):
 lowercase__				:    List[str]  =					0
 while num > 0:
  digit_sum += num % 10
  num //= 10
 return digit_sum
def 			__UpperCamelCase       (   UpperCAmelCase = 100     ):
 lowercase__				:    Dict  =					1
 lowercase__				:    Optional[int]  =					2

 for i in range(2		,     max_n + 1     ):
  lowercase__				:    List[str]  =					pre_numerator
  lowercase__				:    Optional[Any]  =					2 * i // 3 if i % 3 == 0 else 1
  lowercase__				:    Union[str, Any]  =					cur_numerator
  lowercase__				:    int  =					e_cont * pre_numerator + temp

 return sum_digits(UpperCAmelCase     )


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

