
'''simple docstring'''





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



class 			lowerCAmelCase__ :



  '''simple docstring'''






  _UpperCamelCase							=			'block_{0}.dat'

  def __init__(self	:			List[Any]						,			lowerCAmelCase_	:			List[str]     ) ->							List[Any]:
        snake_case_    							=				filename
        snake_case_    							=				[]

  def 		_lowerCamelCase						(self	:			List[str]						,			lowerCAmelCase_	:			Union[str, Any]						,			lowerCAmelCase_	:			Union[str, Any]     ) ->							Optional[Any]:
        snake_case_    							=				self.BLOCK_FILENAME_FORMAT.format(lowerCAmelCase_     )
        with open(lowerCAmelCase_						,			"w"     ) as file:
              file.write(lowerCAmelCase_     )
        self.block_filenames.append(lowerCAmelCase_     )

  def 		_lowerCamelCase						(self	:			Any     ) ->							Optional[Any]:
        return self.block_filenames

  def 		_lowerCamelCase						(self	:			Dict						,			lowerCAmelCase_	:			Tuple						,			lowerCAmelCase_	:			Optional[Any]=None     ) ->							Union[str, Any]:
        snake_case_    							=				0
        with open(self.filename     ) as file:
              while True:
                    snake_case_    							=				file.readlines(lowerCAmelCase_     )

                    if lines == []:
                          break

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

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


  def 		_lowerCamelCase						(self	:			Dict     ) ->							List[str]:
        map(os.remove						,			self.block_filenames     )



class 			lowerCAmelCase__ :



  '''simple docstring'''






  def 		_lowerCamelCase						(self	:			List[str]						,			lowerCAmelCase_	:			List[Any]     ) ->							Tuple:
        snake_case_    							=				-1
        snake_case_    							=				None

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

        return min_index



class 			lowerCAmelCase__ :



  '''simple docstring'''






  def __init__(self	:			Optional[Any]						,			lowerCAmelCase_	:			List[str]     ) ->							List[Any]:
        snake_case_    							=				files
        snake_case_    							=				set()
        snake_case_    							=				len(lowerCAmelCase_     )
        snake_case_    							=				{i: None for i in range(self.num_buffers     )}

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

  def 		_lowerCamelCase						(self	:			List[str]     ) ->							List[str]:
        for i in range(self.num_buffers     ):
              if self.buffers[i] is None and i not in self.empty:
                    snake_case_    							=				self.files[i].readline()

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

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

        return True


  def 		_lowerCamelCase						(self	:			Union[str, Any]						,			lowerCAmelCase_	:			Any     ) ->							int:
        snake_case_    							=				self.buffers[index]
        snake_case_    							=				None

        return value



class 			lowerCAmelCase__ :



  '''simple docstring'''






  def __init__(self	:			Optional[int]						,			lowerCAmelCase_	:			str     ) ->							Any:
        snake_case_    							=				merge_strategy

  def 		_lowerCamelCase						(self	:			Any						,			lowerCAmelCase_	:			str						,			lowerCAmelCase_	:			List[str]						,			lowerCAmelCase_	:			List[Any]     ) ->							int:
        snake_case_    							=				FilesArray(self.get_file_handles(lowerCAmelCase_						,			lowerCAmelCase_     )     )
        with open(lowerCAmelCase_						,			"w"						,			lowerCAmelCase_     ) as outfile:
              while buffers.refresh():
                    snake_case_    							=				self.merge_strategy.select(buffers.get_dict()     )
                    outfile.write(buffers.unshift(lowerCAmelCase_     )     )


  def 		_lowerCamelCase						(self	:			str						,			lowerCAmelCase_	:			Any						,			lowerCAmelCase_	:			Optional[Any]     ) ->							Dict:
        snake_case_    							=				{}

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

        return files



class 			lowerCAmelCase__ :



  '''simple docstring'''






  def __init__(self	:			int						,			lowerCAmelCase_	:			List[str]     ) ->							List[Any]:
        snake_case_    							=				block_size

  def 		_lowerCamelCase						(self	:			Any						,			lowerCAmelCase_	:			List[Any]						,			lowerCAmelCase_	:			Tuple=None     ) ->							List[str]:
        snake_case_    							=				self.get_number_blocks(lowerCAmelCase_						,			self.block_size     )
        snake_case_    							=				FileSplitter(lowerCAmelCase_     )
        splitter.split(self.block_size						,			lowerCAmelCase_     )

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

        splitter.cleanup()


  def 		_lowerCamelCase						(self	:			Optional[int]						,			lowerCAmelCase_	:			Optional[Any]						,			lowerCAmelCase_	:			Tuple     ) ->							Dict:
        return (os.stat(lowerCAmelCase_     ).st_size / block_size) + 1

def 	snake_case_							(				_a  :				Optional[int]      ):
      if string[-1].lower() == "k":
            return int(string[:-1]      ) * 1_024
      elif string[-1].lower() == "m":
            return int(string[:-1]      ) * 1_024 * 1_024
      elif string[-1].lower() == "g":
            return int(string[:-1]      ) * 1_024 * 1_024 * 1_024
      else:
            return int(_a      )
def 	snake_case_							(				):
      snake_case_    							=				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"      )
      snake_case_    							=				parser.parse_args()

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


if __name__ == "__main__":
     main()






"""simple docstring"""
import os
def   A_    (     ):







						'''simple docstring'''


						snake_case_					:Optional[Any]		=     os.path.dirname(os.path.realpath(_lowercase      )      )
						snake_case_					:int		=     os.path.join(_lowercase,   """triangle.txt"""      )

						with open(_lowercase      ) as in_file:
												snake_case_					:List[Any]		=     [[int(_lowercase      ) for i in line.split()] for line in in_file]

						while len(_lowercase      ) != 1:
												snake_case_					:str		=     triangle.pop()
												snake_case_					:int		=     triangle[-1]
												for j in range(len(_lowercase      ) - 1      ):
																		curr_row[j] += max(last_row[j],   last_row[j + 1]      )
						return triangle[0][0]


if __name__ == "__main__":
						print(solution())
