






from __future__ import annotations
def      a_ (      _A      ,   _A  )			->			set[str]:







				"""simple docstring"""
				snake_case__							,						snake_case__									=     set(_A  ), [start]

				while stack:
								snake_case__									=     stack.pop()
								explored.add(_A  )
								# Differences from BFS:
								# 1) pop last element instead of first one
								# 2) add adjacent elements to stack without exploring them
								for adj in reversed(graph[v]  ):
												if adj not in explored:
																stack.append(_A  )
				return explored


__UpperCamelCase					:		List[Any]	  =						{
    """A""": ["""B""", """C""", """D"""],
    """B""": ["""A""", """D""", """E"""],
    """C""": ["""A""", """F"""],
    """D""": ["""B""", """D"""],
    """E""": ["""B""", """F"""],
    """F""": ["""C""", """E""", """G"""],
    """G""": ["""F"""],
}

if __name__ == "__main__":
							import doctest

							doctest.testmod()
							print(depth_first_search(G, """A"""))












from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_sentencepiece_available


__UpperCamelCase					:		str	  =						{}

try:
							if not is_sentencepiece_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							__UpperCamelCase					:		Dict	  =						["""BartphoTokenizer"""]

if TYPE_CHECKING:
							try:
														if not is_sentencepiece_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .tokenization_bartpho import BartphoTokenizer

else:
							import sys

							__UpperCamelCase					:		Any	  =						_LazyModule(__name__, globals()["""__file__"""], _import_structure, module_spec=__spec__)




