

from __future__ import annotations






class _UpperCamelCase							:
   '''simple docstring'''







   def __init__(     self							:	Any , a							:	int = 0		)							->    None:

    """simple docstring"""

    SCREAMING_SNAKE_CASE				: str			       =    value
    SCREAMING_SNAKE_CASE				: Node | None			       =    None
    SCREAMING_SNAKE_CASE				: Node | None			       =    None

def 	lowerCamelCase__	(   _a							,     _a):
 if treea is None:
  return treea
 if treea is None:
  return treea

 SCREAMING_SNAKE_CASE				: str			       =    treea.value + treea.value
 SCREAMING_SNAKE_CASE				: Optional[int]			       =    merge_two_binary_trees(treea.left							,     treea.left)
 SCREAMING_SNAKE_CASE				: Any			       =    merge_two_binary_trees(treea.right							,     treea.right)
 return treea

def 	lowerCamelCase__	(   _a):
 if root:
  print(root.value)
  print_preorder(root.left)
  print_preorder(root.right)


if __name__ == "__main__":
   a_         =      Node(1)
   a_         =      Node(2)
   a_         =      Node(3)
   a_         =      Node(4)

   a_         =      Node(2)
   a_         =      Node(4)
   a_         =      Node(6)
   a_         =      Node(9)
   a_         =      Node(5)

   print('Tree1 is: ')
   print_preorder(treea)
   print('Tree2 is: ')
   print_preorder(treea)
   a_         =      merge_two_binary_trees(treea, treea)
   print('Merged Tree is: ')
   print_preorder(merged_tree)


from __future__ import annotations

from typing import Any






class _UpperCamelCase							:
			'''simple docstring'''







			def __init__(     self							:	Dict , a							:	Any , a							:	Any		)							->    None:  # noqa: A002

				"""simple docstring"""

				SCREAMING_SNAKE_CASE				: str			       =    item
				SCREAMING_SNAKE_CASE				: List[Any]			       =    next






class _UpperCamelCase							:
			'''simple docstring'''







			def __init__(     self							:	Optional[int]		)							->    None:

				"""simple docstring"""

				SCREAMING_SNAKE_CASE				: Node | None			       =    None
				SCREAMING_SNAKE_CASE				: List[Any]			       =    0
			def 							__UpperCamelCase	(     self							:	Union[str, Any] , a							:	Any		)							->    None:

				"""simple docstring"""

				SCREAMING_SNAKE_CASE				: Any			       =    Node(a , self.head		)
				self.size += 1
			def 							__UpperCamelCase	(     self							:	Dict		)							->    Any:

				"""simple docstring"""

				if self.head is None:
					return None
				else:
					SCREAMING_SNAKE_CASE				: Optional[int]			       =    self.head.item
					SCREAMING_SNAKE_CASE				: Dict			       =    self.head.next
					self.size -= 1
					return item
			def 							__UpperCamelCase	(     self							:	Any		)							->    bool:

				"""simple docstring"""

				return self.head is None
			def __str__(     self							:	Union[str, Any]		)							->    str:

				"""simple docstring"""

				if self.is_empty():
					return ""
				else:
					SCREAMING_SNAKE_CASE				: Union[str, Any]			       =    self.head
					SCREAMING_SNAKE_CASE				: str			       =    ""
					SCREAMING_SNAKE_CASE				: list[str]			       =    []
					while iterate:
						item_list.append(str(iterate.item		)		)
						SCREAMING_SNAKE_CASE				: str			       =    iterate.next

					SCREAMING_SNAKE_CASE				: List[str]			       =    " --> ".join(a		)

					return item_str






			def __len__(     self							:	List[Any]		)							->    int:

				"""simple docstring"""

				return self.size