


def 		__lowerCAmelCase   (							_UpperCamelCase		)    ->				set:






      '''simple docstring'''

      lowerCamelCase__:						Optional[Any]							   = set()
      # edges = list of graph's edges
      lowerCamelCase__:						List[Any]							   = get_edges(lowerCamelCase_		)

      # While there are still elements in edges list, take an arbitrary edge
      # (from_node, to_node) and add his extremity to chosen_vertices and then
      # remove all arcs adjacent to the from_node and to_node
      while edges:
            lowerCamelCase__:						str							   = edges.pop()
            chosen_vertices.add(lowerCamelCase_		)
            chosen_vertices.add(lowerCamelCase_		)
            for edge in edges.copy():
                  if from_node in edge or to_node in edge:
                        edges.discard(lowerCamelCase_		)
      return chosen_vertices

def 		__lowerCAmelCase   (							_UpperCamelCase		)    ->				set:






      '''simple docstring'''

      lowerCamelCase__:						List[Any]							   = set()
      for from_node, to_nodes in graph.items():
            for to_node in to_nodes:
                  edges.add((from_node, to_node)		)
      return edges


if __name__ == "__main__":
      import doctest

      doctest.testmod()

      # graph = {0: [1, 3], 1: [0, 3], 2: [0, 3, 4], 3: [0, 1, 2], 4: [2, 3]}
      # print(f"Matching vertex cover:\n{matching_min_vertex_cover(graph)}")










import os

try:
 from .build_directory_md import good_file_paths
except ImportError:
 from build_directory_md import good_file_paths  # type: ignore

SCREAMING_SNAKE_CASE			: int				   =					list(good_file_paths())
assert filepaths, "good_file_paths() failed!"

SCREAMING_SNAKE_CASE			: Dict				   =					[file for file in filepaths if file != file.lower()]
if upper_files:
 print(F"{len(upper_files)} files contain uppercase characters:")
 print("\n".join(upper_files) + "\n")

SCREAMING_SNAKE_CASE			: List[Any]				   =					[file for file in filepaths if " " in file]
if space_files:
 print(F"{len(space_files)} files contain space characters:")
 print("\n".join(space_files) + "\n")

SCREAMING_SNAKE_CASE			: Any				   =					[file for file in filepaths if "-" in file]
if hyphen_files:
 print(F"{len(hyphen_files)} files contain hyphen characters:")
 print("\n".join(hyphen_files) + "\n")

SCREAMING_SNAKE_CASE			: str				   =					[file for file in filepaths if os.sep not in file]
if nodir_files:
 print(F"{len(nodir_files)} files are not in a directory:")
 print("\n".join(nodir_files) + "\n")

SCREAMING_SNAKE_CASE			: Tuple				   =					len(upper_files + space_files + hyphen_files + nodir_files)
if bad_files:
 import sys

 sys.exit(bad_files)


