import os
def 					_snake_case	(  __snake_case = "input.txt"						):

					with open(os.path.join(os.path.dirname(__snake_case						)  ,     __snake_case						)						) as input_file:
										_UpperCamelCase			     =     [
										    [int(__snake_case						) for element in line.split(''','''						)]
										    for line in input_file.readlines()
										]

					_UpperCamelCase			     =     len(__snake_case						)
					_UpperCamelCase			     =     len(matrix[0]						)

					_UpperCamelCase			     =     [[-1 for _ in range(__snake_case						)] for _ in range(__snake_case						)]
					for i in range(__snake_case						):
										_UpperCamelCase			     =     matrix[i][0]

					for j in range(1  ,     __snake_case						):
										for i in range(__snake_case						):
															_UpperCamelCase			     =     minimal_path_sums[i][j - 1] + matrix[i][j]

										for i in range(1  ,     __snake_case						):
															_UpperCamelCase			     =     min(
															    minimal_path_sums[i][j]  ,     minimal_path_sums[i - 1][j] + matrix[i][j]						)

										for i in range(rows - 2  ,     -1  ,     -1						):
															_UpperCamelCase			     =     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() = }')








from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_sentencepiece_available,
    is_tokenizers_available,
    is_torch_available,
)


__magic_name__   :  Tuple        =							{'''configuration_plbart''': ['''PLBART_PRETRAINED_CONFIG_ARCHIVE_MAP''', '''PLBartConfig''']}

try:
       if not is_sentencepiece_available():
              raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
       pass
else:
       __magic_name__   :  Optional[Any]        =							['''PLBartTokenizer''']

try:
       if not is_torch_available():
              raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
       pass
else:
       __magic_name__   :  Tuple        =							[
           '''PLBART_PRETRAINED_MODEL_ARCHIVE_LIST''',
           '''PLBartForCausalLM''',
           '''PLBartForConditionalGeneration''',
           '''PLBartForSequenceClassification''',
           '''PLBartModel''',
           '''PLBartPreTrainedModel''',
       ]


if TYPE_CHECKING:
       from .configuration_plbart import PLBART_PRETRAINED_CONFIG_ARCHIVE_MAP, PLBartConfig

       try:
              if not is_sentencepiece_available():
                     raise OptionalDependencyNotAvailable()
       except OptionalDependencyNotAvailable:
              pass
       else:
              from .tokenization_plbart import PLBartTokenizer

       try:
              if not is_torch_available():
                     raise OptionalDependencyNotAvailable()
       except OptionalDependencyNotAvailable:
              pass
       else:
              from .modeling_plbart import (
                  PLBART_PRETRAINED_MODEL_ARCHIVE_LIST,
                  PLBartForCausalLM,
                  PLBartForConditionalGeneration,
                  PLBartForSequenceClassification,
                  PLBartModel,
                  PLBartPreTrainedModel,
              )


else:
       import sys

       __magic_name__   :  Optional[int]        =							_LazyModule(__name__, globals()['''__file__'''], _import_structure)



