






'''simple docstring'''



from __future__ import annotations

SCREAMING_SNAKE_CASE							=						{
    'A': ['B', 'C', 'E'],
    'B': ['A', 'D', 'E'],
    'C': ['A', 'F', 'G'],
    'D': ['B'],
    'E': ['A', 'B', 'D'],
    'F': ['C'],
    'G': ['C'],
}
class UpperCAmelCase_       :




      """simple docstring"""




      def __init__(			self      :		Union[str, Any]  ,   UpperCAmelCase      :		dict[str, list[str]]  ,   UpperCAmelCase      :		str		)	->	None:


       '''simple docstring'''

       lowercase       : Any						=graph
       # mapping node to its parent in resulting breadth first tree
       lowercase       : dict[str, str | None]						={}
       lowercase       : int						=source_vertex






      def 					A__   (			self      :		Optional[Any]		)	->	None:


       '''simple docstring'''

       lowercase       : str						={self.source_vertex}
       lowercase       : Optional[int]						=None
       lowercase       : List[str]						=[self.source_vertex]  # first in first out queue

       while queue:
        lowercase       : Optional[int]						=queue.pop(0		)
        for adjacent_vertex in self.graph[vertex]:
         if adjacent_vertex not in visited:
          visited.add(UpperCAmelCase		)
          lowercase       : Optional[Any]						=vertex
          queue.append(UpperCAmelCase		)






      def 					A__   (			self      :		Dict  ,   UpperCAmelCase      :		str		)	->	str:


       '''simple docstring'''

       if target_vertex == self.source_vertex:
        return self.source_vertex

       lowercase       : int						=self.parent.get(UpperCAmelCase		)
       if target_vertex_parent is None:
        lowercase       : List[str]						=(
            f'No path from vertex: {self.source_vertex} to vertex: {target_vertex}'
        )
        raise ValueError(UpperCAmelCase		)

       return self.shortest_path(UpperCAmelCase		) + f'->{target_vertex}'


if __name__ == "__main__":
      SCREAMING_SNAKE_CASE							=						Graph(graph, 'G')
      g.breath_first_search()
      print(g.shortest_path('D'))
      print(g.shortest_path('G'))
      print(g.shortest_path('Foo'))











'''simple docstring'''



def 				lowercase_					(     __A			:							int       ,   __A			:							int      )							->   int:



 """simple docstring"""




 return 1 if input_a == input_a else 0


def 				lowercase_					(     )							->   None:



 """simple docstring"""




 assert xnor_gate(0       ,   0      ) == 1
 assert xnor_gate(0       ,   1      ) == 0
 assert xnor_gate(1       ,   0      ) == 0
 assert xnor_gate(1       ,   1      ) == 1


if __name__ == "__main__":
      print(xnor_gate(0, 0))
      print(xnor_gate(0, 1))
      print(xnor_gate(1, 0))
      print(xnor_gate(1, 1))



