

"""simple docstring"""




#
# Sort large text files in a minimum amount of memory
#
import argparse
import os





class __snake_case		:







   """simple docstring"""




   lowerCAmelCase_				:   Tuple     	=			"block_{0}.dat"




   def __init__(		self							:Optional[int]				,  UpperCamelCase__							:str       ):
          _a          =				filename
          _a          =				[]




   def SCREAMING_SNAKE_CASE_      (		self							:Tuple				,  UpperCamelCase__							:str				,  UpperCamelCase__							:Dict       ):
          _a          =				self.BLOCK_FILENAME_FORMAT.format(SCREAMING_SNAKE_CASE_       )
          with open(SCREAMING_SNAKE_CASE_				,  "w"       ) as file:
                 file.write(SCREAMING_SNAKE_CASE_       )
          self.block_filenames.append(SCREAMING_SNAKE_CASE_       )




   def SCREAMING_SNAKE_CASE_      (		self							:str       ):
          return self.block_filenames




   def SCREAMING_SNAKE_CASE_      (		self							:Any				,  UpperCamelCase__							:Dict				,  UpperCamelCase__							:List[str]=None       ):
          _a          =				0
          with open(self.filename       ) as file:
                 while True:
                        _a          =				file.readlines(SCREAMING_SNAKE_CASE_       )

                        if lines == []:
                               break

                        if sort_key is None:
                               lines.sort()
                        else:
                               lines.sort(key=SCREAMING_SNAKE_CASE_       )

                        self.write_block("".join(SCREAMING_SNAKE_CASE_       )				,  SCREAMING_SNAKE_CASE_       )
                        i += 1




   def SCREAMING_SNAKE_CASE_      (		self							:Optional[int]       ):
          map(os.remove				,  self.block_filenames       )






class __snake_case		:







   """simple docstring"""




   def SCREAMING_SNAKE_CASE_      (		self							:Optional[int]				,  UpperCamelCase__							:List[str]       ):
          _a          =				-1
          _a          =				None

          for i in range(len(SCREAMING_SNAKE_CASE_       )       ):
                 if min_str is None or choices[i] < min_str:
                        _a          =				i

          return min_index






class __snake_case		:







   """simple docstring"""




   def __init__(		self							:List[str]				,  UpperCamelCase__							:Any       ):
          _a          =				files
          _a          =				set()
          _a          =				len(SCREAMING_SNAKE_CASE_       )
          _a          =				{i: None for i in range(self.num_buffers       )}




   def SCREAMING_SNAKE_CASE_      (		self							:Union[str, Any]       ):
          return {
              i: self.buffers[i] for i in range(self.num_buffers       ) if i not in self.empty
          }




   def SCREAMING_SNAKE_CASE_      (		self							:List[Any]       ):
          for i in range(self.num_buffers       ):
                 if self.buffers[i] is None and i not in self.empty:
                        _a          =				self.files[i].readline()

                        if self.buffers[i] == "":
                               self.empty.add(SCREAMING_SNAKE_CASE_       )
                               self.files[i].close()

          if len(self.empty       ) == self.num_buffers:
                 return False

          return True




   def SCREAMING_SNAKE_CASE_      (		self							:List[Any]				,  UpperCamelCase__							:List[str]       ):
          _a          =				self.buffers[index]
          _a          =				None

          return value






class __snake_case		:







   """simple docstring"""




   def __init__(		self							:Dict				,  UpperCamelCase__							:Union[str, Any]       ):
          _a          =				merge_strategy




   def SCREAMING_SNAKE_CASE_      (		self							:List[Any]				,  UpperCamelCase__							:List[str]				,  UpperCamelCase__							:List[Any]				,  UpperCamelCase__							:Any       ):
          _a          =				FilesArray(self.get_file_handles(SCREAMING_SNAKE_CASE_				,  SCREAMING_SNAKE_CASE_       )       )
          with open(SCREAMING_SNAKE_CASE_				,  "w"				,  SCREAMING_SNAKE_CASE_       ) as outfile:
                 while buffers.refresh():
                        _a          =				self.merge_strategy.select(buffers.get_dict()       )
                        outfile.write(buffers.unshift(SCREAMING_SNAKE_CASE_       )       )




   def SCREAMING_SNAKE_CASE_      (		self							:Optional[int]				,  UpperCamelCase__							:List[str]				,  UpperCamelCase__							:Tuple       ):
          _a          =				{}

          for i in range(len(SCREAMING_SNAKE_CASE_       )       ):
                 _a          =				open(filenames[i]				,  "r"				,  SCREAMING_SNAKE_CASE_       )  # noqa: UP015

          return files






class __snake_case		:







   """simple docstring"""




   def __init__(		self							:Union[str, Any]				,  UpperCamelCase__							:List[Any]       ):
          _a          =				block_size




   def SCREAMING_SNAKE_CASE_      (		self							:str				,  UpperCamelCase__							:Dict				,  UpperCamelCase__							:Dict=None       ):
          _a          =				self.get_number_blocks(SCREAMING_SNAKE_CASE_				,  self.block_size       )
          _a          =				FileSplitter(SCREAMING_SNAKE_CASE_       )
          splitter.split(self.block_size				,  SCREAMING_SNAKE_CASE_       )

          _a          =				FileMerger(NWayMerge()       )
          _a          =				self.block_size / (num_blocks + 1)
          merger.merge(splitter.get_block_filenames()				,  filename + ".out"				,  SCREAMING_SNAKE_CASE_       )

          splitter.cleanup()




   def SCREAMING_SNAKE_CASE_      (		self							:int				,  UpperCamelCase__							:Dict				,  UpperCamelCase__							:Optional[Any]       ):
          return (os.stat(SCREAMING_SNAKE_CASE_       ).st_size / block_size) + 1






def 						__a      (  a					):





       """simple docstring"""







       if string[-1].lower() == "k":
              return int(string[:-1]					) * 1_0_2_4
       elif string[-1].lower() == "m":
              return int(string[:-1]					) * 1_0_2_4 * 1_0_2_4
       elif string[-1].lower() == "g":
              return int(string[:-1]					) * 1_0_2_4 * 1_0_2_4 * 1_0_2_4
       else:
              return int(snake_case__					)



def 						__a      (  ):





       """simple docstring"""







       _a          =				argparse.ArgumentParser()
       parser.add_argument(
           "-m",		"--mem",		help="amount of memory to use for sorting",		default="100M"					)
       parser.add_argument(
           "filename",		metavar="<filename>",		nargs=1,		help="name of file to sort"					)
       _a          =				parser.parse_args()

       _a          =				ExternalSort(parse_memory(args.mem					)					)
       sorter.sort(args.filename[0]					)


if __name__ == "__main__":
   main()




"""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
