from __future__ import annotations

from collections.abc import Iterator
from typing import Any
class 	_a  :



	"""simple docstring"""



	def __init__(   self       ,  lowerCAmelCase_       ):
		_lowercase   =data
		_lowercase   =None


	def __str__(   self       ):
		return F'''{self.data}'''

class 	_a  :



	"""simple docstring"""



	def __init__(   self       ):
		_lowercase   =None
		_lowercase   =None


	def __iter__(   self       ):
		_lowercase   =self.front
		while node:
			yield node.data
			_lowercase   =node.next


	def __len__(   self       ):
		return len(tuple(iter(self       )       )       )


	def __str__(   self       ):
		return " <- ".join(str(lowerCAmelCase_       ) for item in self       )


	def __lowerCAmelCase      (   self       ):
		return len(self       ) == 0


	def __lowerCAmelCase      (   self       ,  lowerCAmelCase_       ):
		_lowercase   =Node(lowerCAmelCase_       )
		if self.is_empty():
			_lowercase   =_lowercase   =node
		else:
			assert isinstance(self.rear       ,  lowerCAmelCase_       )
			_lowercase   =node
			_lowercase   =node


	def __lowerCAmelCase      (   self       ):
		if self.is_empty():
			raise IndexError("dequeue from empty queue"       )
		assert isinstance(self.front       ,  lowerCAmelCase_       )
		_lowercase   =self.front
		_lowercase   =self.front.next
		if self.front is None:
			_lowercase   =None
		return node.data


	def __lowerCAmelCase      (   self       ):
		_lowercase   =_lowercase   =None


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

						testmod()












"""simple docstring"""





from __future__ import annotations


class   _lowercase			:


      def __init__(     self					:						int				, a					:						int = 0    ):





            """simple docstring"""







            __snake_case   :     Optional[Any]	      =value
            __snake_case   :     Node | None	      =None
            __snake_case   :     Node | None	      =None



def      __lowercase       (     a			:					Node | None							,		a			:					Node | None			)       ->       Node | None:
      if treea is None:
            return treea
      if treea is None:
            return treea

      __snake_case   :     Dict	      =treea.value + treea.value
      __snake_case   :     int	      =merge_two_binary_trees(treea.left							,		treea.left			)
      __snake_case   :     List[str]	      =merge_two_binary_trees(treea.right							,		treea.right			)
      return treea



def      __lowercase       (     a			:					Node | None			)       ->       None:
      if root:
            print(root.value			)
            print_preorder(root.left			)
            print_preorder(root.right			)


if __name__ == "__main__":
    UpperCamelCase_						:					List[str]      				=			Node(1)
    UpperCamelCase_						:					List[Any]      				=			Node(2)
    UpperCamelCase_						:					Optional[Any]      				=			Node(3)
    UpperCamelCase_						:					int      				=			Node(4)

    UpperCamelCase_						:					int      				=			Node(2)
    UpperCamelCase_						:					List[str]      				=			Node(4)
    UpperCamelCase_						:					Any      				=			Node(6)
    UpperCamelCase_						:					Union[str, Any]      				=			Node(9)
    UpperCamelCase_						:					Dict      				=			Node(5)

    print("""Tree1 is: """)
    print_preorder(treea)
    print("""Tree2 is: """)
    print_preorder(treea)
    UpperCamelCase_						:					Optional[Any]      				=			merge_two_binary_trees(treea, treea)
    print("""Merged Tree is: """)
    print_preorder(merged_tree)


