def 		__lowerCamelCase							(UpperCAmelCase__       :							Dict ,	UpperCAmelCase__       :							Any ,	UpperCAmelCase__       :							Tuple ,	UpperCAmelCase__       :							Tuple ,	UpperCAmelCase__       :							int ,	UpperCAmelCase__       :							Union[str, Any]					):
					if index == r:
										for j in range(UpperCAmelCase__					):
															print(data[j] ,	end=" "					)
										print(" "					)
										return
					#  When no more elements are there to put in data[]
					if i >= n:
										return
					# current is included, put next at next location
					SCREAMING_SNAKE_CASE           =    arr[i]
					combination_util(UpperCAmelCase__ ,	UpperCAmelCase__ ,	UpperCAmelCase__ ,	index + 1 ,	UpperCAmelCase__ ,	i + 1					)
					# current is excluded, replace it with
					# next (Note that i+1 is passed, but
					# index is not changed)
					combination_util(UpperCAmelCase__ ,	UpperCAmelCase__ ,	UpperCAmelCase__ ,	UpperCAmelCase__ ,	UpperCAmelCase__ ,	i + 1					)
					# The main function that prints all combinations
					# of size r in arr[] of size n. This function
					# mainly uses combinationUtil()





def 		__lowerCamelCase							(UpperCAmelCase__       :							Tuple ,	UpperCAmelCase__       :							Tuple ,	UpperCAmelCase__       :							Optional[int]					):
					# A temporary array to store all combination one by one
					SCREAMING_SNAKE_CASE           =    [0] * r
					# Print all combination using temporary array 'data[]'
					combination_util(UpperCAmelCase__ ,	UpperCAmelCase__ ,	UpperCAmelCase__ ,	0 ,	UpperCAmelCase__ ,	0					)


if __name__ == "__main__":
							# Driver code to check the function above
							_lowerCamelCase   :				Tuple     			=						[10, 20, 30, 40, 50]
							print_combination(arr, len(arr), 3)
							# This code is contributed by Ambuj sahu





from __future__ import annotations

from collections.abc import Iterator


class   lowercase      :




							def __init__(  self				:   str		,							_UpperCamelCase				:   int )   ->			None:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE           =    value
												SCREAMING_SNAKE_CASE           =    None
												SCREAMING_SNAKE_CASE           =    None



class   lowercase      :




							def __init__(  self				:   str		,							_UpperCamelCase				:   Node )   ->			None:



												'''simple docstring'''

												SCREAMING_SNAKE_CASE           =    tree




							def 		__snake_case(  self				:   int		,							_UpperCamelCase				:   Node | None )   ->			int:



												'''simple docstring'''

												if node is None:
																	return 0
												return node.value + (
												    self.depth_first_search(node.left ) + self.depth_first_search(node.right )
												)





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



												'''simple docstring'''

												yield self.depth_first_search(self.tree )


if __name__ == "__main__":
							import doctest

							doctest.testmod()




