


"""simple docstring"""







import os
def  a__      (    SCREAMING_SNAKE_CASE   :   str = "input.txt"    ):


  '''simple docstring'''







  with open(os.path.join(os.path.dirname(SCREAMING_SNAKE_CASE    )    ,				SCREAMING_SNAKE_CASE    )    ) as input_file:
    lowerCAmelCase					:					Tuple								=							[
        [int(SCREAMING_SNAKE_CASE    ) for element in line.split(","    )]
        for line in input_file.readlines()
    ]

  lowerCAmelCase					:					Union[str, Any]								=							len(SCREAMING_SNAKE_CASE    )
  lowerCAmelCase					:					Union[str, Any]								=							len(matrix[0]    )

  lowerCAmelCase					:					Dict								=							[[-1 for _ in range(SCREAMING_SNAKE_CASE    )] for _ in range(SCREAMING_SNAKE_CASE    )]
  for i in range(SCREAMING_SNAKE_CASE    ):
    lowerCAmelCase					:					int								=							matrix[i][0]

  for j in range(1    ,				SCREAMING_SNAKE_CASE    ):
    for i in range(SCREAMING_SNAKE_CASE    ):
      lowerCAmelCase					:					Dict								=							minimal_path_sums[i][j - 1] + matrix[i][j]

    for i in range(1    ,				SCREAMING_SNAKE_CASE    ):
      lowerCAmelCase					:					List[str]								=							min(
          minimal_path_sums[i][j]    ,				minimal_path_sums[i - 1][j] + matrix[i][j]    )

    for i in range(rows - 2    ,				-1    ,				-1    ):
      lowerCAmelCase					:					List[Any]								=							min(
          minimal_path_sums[i][j]    ,				minimal_path_sums[i + 1][j] + matrix[i][j]    )

  return min(minimal_path_sums_row[-1] for minimal_path_sums_row in minimal_path_sums    )


if __name__ == "__main__":
   print(F"{solution() = }")









"""simple docstring"""







import re

from filelock import FileLock


try:
     import nltk

     lowerCAmelCase__				    =       True
except (ImportError, ModuleNotFoundError):
     lowerCAmelCase__				    =       False

if NLTK_AVAILABLE:
     with FileLock('''.lock''') as lock:
          nltk.download('''punkt''', quiet=True)
def  a__      (    SCREAMING_SNAKE_CASE   :   str    ):


  '''simple docstring'''







  re.sub("<n>"    ,				""    ,				SCREAMING_SNAKE_CASE    )  # remove pegasus newline char
  assert NLTK_AVAILABLE, "nltk must be installed to separate newlines between sentences. (pip install nltk)"
  return "\n".join(nltk.sent_tokenize(SCREAMING_SNAKE_CASE    )    )





