


'''simple docstring'''





from queue import PriorityQueue
from typing import Any

import numpy as np
def   _UpperCamelCase				(						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						)						->float | int:
   for nxt, d in graph[v]:
      if nxt in visited_forward:
         continue
      UpperCAmelCase							=     cst_fwd.get(lowerCAmelCase_  ,						np.inf   )
      UpperCAmelCase							=     cst_fwd[v] + d
      if new_cost_f < old_cost_f:
         queue.put((new_cost_f, nxt)   )
         UpperCAmelCase							=     new_cost_f
         UpperCAmelCase							=     v
      if nxt in visited_backward:
         if cst_fwd[v] + d + cst_bwd[nxt] < shortest_distance:
            UpperCAmelCase							=     cst_fwd[v] + d + cst_bwd[nxt]
   return shortest_distance
def   _UpperCamelCase				(						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_   )						->int:
   UpperCAmelCase							=     -1

   UpperCAmelCase							=     set()
   UpperCAmelCase							=     set()
   UpperCAmelCase							=     {source: 0}
   UpperCAmelCase							=     {destination: 0}
   UpperCAmelCase							=     {source: None}
   UpperCAmelCase							=     {destination: None}
   UpperCAmelCase							=     PriorityQueue()
   UpperCAmelCase							=     PriorityQueue()

   UpperCAmelCase							=     np.inf

   queue_forward.put((0, source)   )
   queue_backward.put((0, destination)   )

   if source == destination:
      return 0

   while not queue_forward.empty() and not queue_backward.empty():
      UpperCAmelCase				,  UpperCAmelCase							=     queue_forward.get()
      visited_forward.add(lowerCAmelCase_   )

      UpperCAmelCase				,  UpperCAmelCase							=     queue_backward.get()
      visited_backward.add(lowerCAmelCase_   )

      UpperCAmelCase							=     pass_and_relaxation(
          lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						)

      UpperCAmelCase							=     pass_and_relaxation(
          lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						lowerCAmelCase_  ,						)

      if cst_fwd[v_fwd] + cst_bwd[v_bwd] >= shortest_distance:
         break

   if shortest_distance != np.inf:
      UpperCAmelCase							=     shortest_distance
   return shortest_path_distance


__a     =			{
    """B""": [["""C""", 1]],
    """C""": [["""D""", 1]],
    """D""": [["""F""", 1]],
    """E""": [["""B""", 1], ["""G""", 2]],
    """F""": [],
    """G""": [["""F""", 1]],
}
__a     =			{
    """B""": [["""E""", 1]],
    """C""": [["""B""", 1]],
    """D""": [["""C""", 1]],
    """F""": [["""D""", 1], ["""G""", 1]],
    """E""": [[None, np.inf]],
    """G""": [["""E""", 2]],
}

if __name__ == "__main__":
 import doctest

 doctest.testmod()







from ...configuration_utils import PretrainedConfig
from ...utils import logging


__a     =			logging.get_logger(__name__)

__a     =			{
    """facebook/nllb-moe-54B""": """https://huggingface.co/facebook/nllb-moe-54b/resolve/main/config.json""",
}






class   __lowercase				(  __snake_case  ):
      UpperCamelCase								=       '''nllb-moe'''
      UpperCamelCase								=       ['''past_key_values''']
      UpperCamelCase								=       {'''num_attention_heads''': '''encoder_attention_heads''', '''hidden_size''': '''d_model'''}





      def __init__(		self						:					Optional[int]					,       __lowerCamelCase						:					Optional[Any]=1_2_8_1_1_2					,       __lowerCamelCase						:					Dict=1_0_2_4					,       __lowerCamelCase						:					Optional[int]=1_2					,       __lowerCamelCase						:					Union[str, Any]=4_0_9_6					,       __lowerCamelCase						:					List[str]=1_6					,       __lowerCamelCase						:					List[str]=1_2					,       __lowerCamelCase						:					int=4_0_9_6					,       __lowerCamelCase						:					Tuple=1_6					,       __lowerCamelCase						:					str=0.05					,       __lowerCamelCase						:					List[str]=0.05					,       __lowerCamelCase						:					List[Any]=True					,       __lowerCamelCase						:					Tuple=True					,       __lowerCamelCase						:					str="relu"					,       __lowerCamelCase						:					Dict=1_0_2_4					,       __lowerCamelCase						:					List[str]=0.1					,       __lowerCamelCase						:					Optional[int]=0.1					,       __lowerCamelCase						:					List[Any]=0.0					,       __lowerCamelCase						:					Optional[Any]=0.02					,       __lowerCamelCase						:					Dict=2					,       __lowerCamelCase						:					Union[str, Any]=True					,       __lowerCamelCase						:					Any=False					,       __lowerCamelCase						:					Tuple="float32"					,       __lowerCamelCase						:					Any=False					,       __lowerCamelCase						:					Optional[int]=1_2_8					,       __lowerCamelCase						:					List[str]=6_4					,       __lowerCamelCase						:					List[Any]=4					,       __lowerCamelCase						:					Tuple=4					,       __lowerCamelCase						:					str=0.001					,       __lowerCamelCase						:					Optional[int]=0.001					,       __lowerCamelCase						:					Tuple="all"					,       __lowerCamelCase						:					Any=False					,       __lowerCamelCase						:					Optional[int]=False					,       __lowerCamelCase						:					List[str]=1.0					,       __lowerCamelCase						:					Dict=0.2					,       __lowerCamelCase						:					Union[str, Any]=1					,       __lowerCamelCase						:					int=0					,       __lowerCamelCase						:					Dict=2					,       __lowerCamelCase						:					int=False					,       **__lowerCamelCase						:					str					,       )    ->   int:






         """simple docstring"""







         UpperCAmelCase							=     vocab_size
         UpperCAmelCase							=     max_position_embeddings
         UpperCAmelCase							=     d_model
         UpperCAmelCase							=     encoder_ffn_dim
         UpperCAmelCase							=     encoder_layers
         UpperCAmelCase							=     encoder_attention_heads
         UpperCAmelCase							=     decoder_ffn_dim
         UpperCAmelCase							=     decoder_layers
         UpperCAmelCase							=     decoder_attention_heads
         UpperCAmelCase							=     dropout
         UpperCAmelCase							=     attention_dropout
         UpperCAmelCase							=     activation_dropout
         UpperCAmelCase							=     activation_function
         UpperCAmelCase							=     init_std
         UpperCAmelCase							=     encoder_layerdrop
         UpperCAmelCase							=     decoder_layerdrop
         UpperCAmelCase							=     use_cache
         UpperCAmelCase							=     encoder_layers
         UpperCAmelCase							=     scale_embedding  # scale factor will be sqrt(d_model) if True
         UpperCAmelCase							=     router_z_loss_coef
         UpperCAmelCase							=     router_aux_loss_coef
         UpperCAmelCase							=     decoder_sparse_step
         UpperCAmelCase							=     encoder_sparse_step
         UpperCAmelCase							=     num_experts
         UpperCAmelCase							=     expert_capacity
         UpperCAmelCase							=     router_bias
         if router_dtype not in ["float32", "float16", "bfloat16"]:
            raise ValueError(F"""`router_dtype` must be one of 'float32', 'float16' or 'bfloat16', got {router_dtype}"""       )
         UpperCAmelCase							=     router_dtype

         UpperCAmelCase							=     router_ignore_padding_tokens
         UpperCAmelCase							=     batch_prioritized_routing
         UpperCAmelCase							=     second_expert_policy
         UpperCAmelCase							=     normalize_router_prob_before_dropping
         UpperCAmelCase							=     moe_eval_capacity_token_fraction
         UpperCAmelCase							=     moe_token_dropout
         UpperCAmelCase							=     output_router_logits
         super().__init__(
             pad_token_id=__lowerCamelCase					,       bos_token_id=__lowerCamelCase					,       eos_token_id=__lowerCamelCase					,       is_encoder_decoder=__lowerCamelCase					,       decoder_start_token_id=__lowerCamelCase					,       **__lowerCamelCase					,       )



