code: 
  
  """simple docstring"""
  
  
  
  
  from typing import TYPE_CHECKING
  
  from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available
  
  
  __SCREAMING_SNAKE_CASE					=						{"""configuration_umt5""": ["""UMT5Config""", """UMT5OnnxConfig"""]}
  
  
  try:
     if not is_torch_available():
        raise OptionalDependencyNotAvailable()
  except OptionalDependencyNotAvailable:
     pass
  else:
     __SCREAMING_SNAKE_CASE					=						[
         """UMT5EncoderModel""",
         """UMT5ForConditionalGeneration""",
         """UMT5ForQuestionAnswering""",
         """UMT5Model""",
         """UMT5PreTrainedModel""",
     ]
  
  if TYPE_CHECKING:
     from .configuration_umta import UMTaConfig, UMTaOnnxConfig
  
     try:
        if not is_torch_available():
           raise OptionalDependencyNotAvailable()
     except OptionalDependencyNotAvailable:
        pass
     else:
        from .modeling_umta import (
            UMTaEncoderModel,
            UMTaForConditionalGeneration,
            UMTaForQuestionAnswering,
            UMTaModel,
            UMTaPreTrainedModel,
        )
  else:
     import sys
  
     __SCREAMING_SNAKE_CASE					=						_LazyModule(__name__, globals()["""__file__"""], _import_structure, module_spec=__spec__)
  
style_context: 
  
  
  """simple docstring"""
  
  
  
  
  from __future__ import annotations
  
  
  
  def 						__a      (  a,		a					):
  
  
  
  
  
         """simple docstring"""
  
  
  
  
  
  
  
         assert len(a					) == len(a					)
  
         _a          =				len(a					)
         _a          =				list(range(a					)					)
         _a          =				[-1] * n  # who the donor has donated to
         _a          =				[-1] * n  # who the recipient has received from
         _a          =				[0] * n
  
         while unmatched_donors:
                _a          =				unmatched_donors[0]
                _a          =				donor_pref[donor]
                _a          =				donor_preference[num_donations[donor]]
                num_donations[donor] += 1
                _a          =				recipient_pref[recipient]
                _a          =				rec_record[recipient]
  
                if prev_donor != -1:
                       if rec_preference.index(a					) > rec_preference.index(a					):
                              _a          =				donor
                              _a          =				recipient
                              unmatched_donors.append(a					)
                              unmatched_donors.remove(a					)
                else:
                       _a          =				donor
                       _a          =				recipient
                       unmatched_donors.remove(a					)
         return donor_record
  