






from .dependency_versions_table import deps
from .utils.versions import require_version, require_version_core


# define which module versions we always want to check at run time
# (usually the ones defined in `install_requires` in setup.py)
#
# order specific notes:
# - tqdm must be checked before tokenizers

A_       :Dict       =						[
    '''python''',
    '''tqdm''',
    '''regex''',
    '''requests''',
    '''packaging''',
    '''filelock''',
    '''numpy''',
    '''tokenizers''',
    '''huggingface-hub''',
    '''safetensors''',
    '''accelerate''',
    '''pyyaml''',
]

for pkg in pkgs_to_check_at_runtime:
							if pkg in deps:
														if pkg == "tokenizers":
																					# must be loaded here, or else tqdm check may fail
																					from .utils import is_tokenizers_available

																					if not is_tokenizers_available():
																												continue  # not required, check version only if installed
														elif pkg == "accelerate":
																					# must be loaded here, or else tqdm check may fail
																					from .utils import is_accelerate_available

																					# Maybe switch to is_torch_available in the future here so that Accelerate is hard dep of
																					# Transformers with PyTorch
																					if not is_accelerate_available():
																												continue  # not required, check version only if installed

														require_version_core(deps[pkg])
							else:
														raise ValueError(f"can't find {pkg} in {deps.keys()}, check dependency_versions_table.py")






def 							A     (       a_							,a_=None					)     ->						Union[str, Any]:
					require_version(deps[pkg]							,a_					)


from collections import defaultdict




def       _snake_case	(   lowerCAmelCase							:   int	):
		"""simple docstring"""







		SCREAMING_SNAKE_CASE_  :		Any				      =    1
		SCREAMING_SNAKE_CASE_  :		Tuple				      =    True
		for v in tree[start]:
				if v not in visited:
						ret += dfs(lowerCAmelCase	)
		if ret % 2 == 0:
				cuts.append(lowerCAmelCase	)
		return ret




def       _snake_case	(   ):
		"""simple docstring"""







		dfs(1	)


if __name__ == "__main__":
		__lowerCamelCase   ,						__lowerCamelCase					:	Union[str, Any]       =  10, 9
		__lowerCamelCase					:	Optional[int]       =  defaultdict(list)
		__lowerCamelCase					:	dict[int, bool]       =  {}
		__lowerCamelCase					:	list[int]       =  []
		__lowerCamelCase					:	Optional[Any]       =  0
		__lowerCamelCase					:	Any       =  [(2, 1), (3, 1), (4, 3), (5, 2), (6, 1), (7, 2), (8, 6), (9, 8), (10, 8)]
		for u, v in edges:
				tree[u].append(v)
				tree[v].append(u)
		even_tree()
		print(len(cuts) - 1)
