code: 
  
  
  from typing import TYPE_CHECKING
  
  from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available
  
  
  SCREAMING_SNAKE_CASE : List[str]          =    {
      "configuration_prophetnet": ["PROPHETNET_PRETRAINED_CONFIG_ARCHIVE_MAP", "ProphetNetConfig"],
      "tokenization_prophetnet": ["ProphetNetTokenizer"],
  }
  
  try:
  	if not is_torch_available():
  		raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
  	pass
  else:
  	SCREAMING_SNAKE_CASE : Any          =    [
  	    "PROPHETNET_PRETRAINED_MODEL_ARCHIVE_LIST",
  	    "ProphetNetDecoder",
  	    "ProphetNetEncoder",
  	    "ProphetNetForCausalLM",
  	    "ProphetNetForConditionalGeneration",
  	    "ProphetNetModel",
  	    "ProphetNetPreTrainedModel",
  	]
  
  
  if TYPE_CHECKING:
  	from .configuration_prophetnet import PROPHETNET_PRETRAINED_CONFIG_ARCHIVE_MAP, ProphetNetConfig
  	from .tokenization_prophetnet import ProphetNetTokenizer
  
  	try:
  		if not is_torch_available():
  			raise OptionalDependencyNotAvailable()
  	except OptionalDependencyNotAvailable:
  		pass
  	else:
  		from .modeling_prophetnet import (
  		    PROPHETNET_PRETRAINED_MODEL_ARCHIVE_LIST,
  		    ProphetNetDecoder,
  		    ProphetNetEncoder,
  		    ProphetNetForCausalLM,
  		    ProphetNetForConditionalGeneration,
  		    ProphetNetModel,
  		    ProphetNetPreTrainedModel,
  		)
  
  else:
  	import sys
  
  	SCREAMING_SNAKE_CASE : Optional[Any]          =    _LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
  
  
  
style_context: 
  
  
  def 						_lowerCamelCase		(							SCREAMING_SNAKE_CASE_				: list[int]      ):
  
  
  
  
  
  
  							"""simple docstring"""
  
  
  
  							a_       :   List[Any]			=	len(SCREAMING_SNAKE_CASE_      )
  							if n in (0, 1):
  														return 0
  							return sum(query * (n - i - 1) for i, query in enumerate(sorted(SCREAMING_SNAKE_CASE_      )      )      )
  
  
  if __name__ == "__main__":
  	import doctest
  
  	doctest.testmod()
  
  
  