



from typing import Literal

UpperCAmelCase							=       """ABCDEFGHIJKLMNOPQRSTUVWXYZ"""

def       A_   (						__a  :					str			,		__a  :					str			,		__a  :					Literal["encrypt", "decrypt"]		):

				"""simple docstring"""
				a__					   =		LETTERS if mode == """decrypt""" else key
				a__					   =		key if mode == """decrypt""" else LETTERS
				a__					   =		""""""
				# loop through each symbol in the message
				for symbol in message:
								if symbol.upper() in chars_a:
												# encrypt/decrypt the symbol
												a__					   =		chars_a.find(symbol.upper()		)
												if symbol.isupper():
																translated += chars_b[sym_index].upper()
												else:
																translated += chars_b[sym_index].lower()
								else:
												# symbol is not in LETTERS, just add it
												translated += symbol
				return translated

def       A_   (						__a  :					str			,		__a  :					str		):

				"""simple docstring"""
				return translate_message(__a			,		__a			,		"""encrypt"""		)

def       A_   (						__a  :					str			,		__a  :					str		):

				"""simple docstring"""
				return translate_message(__a			,		__a			,		"""decrypt"""		)

def       A_   (						):

				"""simple docstring"""
				a__					   =		"""Hello World"""
				a__					   =		"""QWERTYUIOPASDFGHJKLZXCVBNM"""
				a__					   =		"""decrypt"""  # set to 'encrypt' or 'decrypt'

				if mode == "encrypt":
								a__					   =		encrypt_message(__a			,		__a		)
				elif mode == "decrypt":
								a__					   =		decrypt_message(__a			,		__a		)
				print(F'''Using the key {key}, the {mode}ed message is: {translated}'''		)


if __name__ == "__main__":
	import doctest

	doctest.testmod()
	main()






from __future__ import annotations

class 			__snake_case   :







							'''simple docstring'''






							def __init__(				self	,	a_ = 0		):
											a__					   =		value
											a__					   =		None
											a__					   =		None




def       A_   (						__a  :					Node | None			,		__a  :					Node | None		):

				"""simple docstring"""
				if treea is None:
								return treea
				if treea is None:
								return treea

				a__					   =		treea.value + treea.value
				a__					   =		merge_two_binary_trees(treea.left			,		treea.left		)
				a__					   =		merge_two_binary_trees(treea.right			,		treea.right		)
				return treea

def       A_   (						__a  :					Node | None		):

				"""simple docstring"""
				if root:
								print(root.value		)
								print_preorder(root.left		)
								print_preorder(root.right		)


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

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

	print("""Tree1 is: """)
	print_preorder(treea)
	print("""Tree2 is: """)
	print_preorder(treea)
	UpperCAmelCase							=       merge_two_binary_trees(treea, treea)
	print("""Merged Tree is: """)
	print_preorder(merged_tree)

