

'''simple docstring'''





from typing import List, Optional

from tokenizers import ByteLevelBPETokenizer

from ...tokenization_utils_fast import PreTrainedTokenizerFast
from ...utils import logging
from .tokenization_blenderbot_small import BlenderbotSmallTokenizer


UpperCamelCase_    						=       logging.get_logger(__name__)

UpperCamelCase_    						=       {
    """vocab_file""": """vocab.json""",
    """merges_file""": """merges.txt""",
    """tokenizer_config_file""": """tokenizer_config.json""",
}

UpperCamelCase_    						=       {
    """vocab_file""": {
        """facebook/blenderbot_small-90M""": """https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/vocab.json"""
    },
    """merges_file""": {
        """facebook/blenderbot_small-90M""": """https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/merges.txt"""
    },
    """tokenizer_config_file""": {
        """facebook/blenderbot_small-90M""": (
            """https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/tokenizer_config.json"""
        )
    },
}

UpperCamelCase_    						=       {
    """facebook/blenderbot_small-90M""": 512,
}





class 		__SCREAMING_SNAKE_CASE							(			lowercase__      ):
				lowerCamelCase_		       =    VOCAB_FILES_NAMES
				lowerCamelCase_		       =    PRETRAINED_VOCAB_FILES_MAP
				lowerCamelCase_		       =    PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
				lowerCamelCase_		       =    BlenderbotSmallTokenizer







				def __init__(       self     :		Tuple		,					UpperCAmelCase__     :		Union[str, Any]=None		,					UpperCAmelCase__     :		Optional[int]=None		,					UpperCAmelCase__     :		Optional[Any]="<|endoftext|>"		,					UpperCAmelCase__     :		Dict="<|endoftext|>"		,					UpperCAmelCase__     :		List[str]="<|endoftext|>"		,					UpperCAmelCase__     :		List[Any]=False		,					UpperCAmelCase__     :		Optional[Any]=True		,					**UpperCAmelCase__     :		Optional[int]		,					):
										'''simple docstring'''
										super().__init__(
										    ByteLevelBPETokenizer(
										        vocab=UpperCAmelCase__		,					merges=UpperCAmelCase__		,					add_prefix_space=UpperCAmelCase__		,					trim_offsets=UpperCAmelCase__		,					)		,					bos_token=UpperCAmelCase__		,					eos_token=UpperCAmelCase__		,					unk_token=UpperCAmelCase__		,					**UpperCAmelCase__		,					)
										lowercase :							int    		=add_prefix_space







				def  lowerCamelCase_	(       self     :		Any		,					UpperCAmelCase__     :		str		,					UpperCAmelCase__     :		Tuple=None   ):
										'''simple docstring'''
										lowercase :							Any    		=[self.bos_token_id] + token_ids_a + [self.eos_token_id]
										if token_ids_a is None:
																return output

										return output + [self.eos_token_id] + token_ids_a + [self.eos_token_id]







				def  lowerCamelCase_	(       self     :		Union[str, Any]		,					UpperCAmelCase__     :		List[int]		,					UpperCAmelCase__     :		Optional[List[int]] = None   ):
										'''simple docstring'''
										lowercase :							Optional[Any]    		=[self.sep_token_id]
										lowercase :							str    		=[self.cls_token_id]

										if token_ids_a is None:
																return len(cls + token_ids_a + sep   ) * [0]
										return len(cls + token_ids_a + sep + sep + token_ids_a + sep   ) * [0]








'''simple docstring'''





from collections import defaultdict






def 				_lowerCAmelCase			(   __magic_name__						:     int						)				->  int:
						lowercase :							Optional[Any]    		=1
						lowercase :							Union[str, Any]    		=True
						for v in tree[start]:
												if v not in visited:
																		ret += dfs(__magic_name__						)
						if ret % 2 == 0:
												cuts.append(__magic_name__						)
						return ret






def 				_lowerCAmelCase			(   )				->  int:
						dfs(1						)


if __name__ == "__main__":
							UpperCamelCase_						,   UpperCamelCase_    						=       10, 9
							UpperCamelCase_    						=       defaultdict(list)
							UpperCamelCase_    						=       {}
							UpperCamelCase_    						=       []
							UpperCamelCase_    						=       0
							UpperCamelCase_    						=       [(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)





