
# Lint as: python3
import itertools
import os
import re


lowercase__	:List[str]										=					re.compile(r"([A-Z]+)([A-Z][a-z])")
lowercase__	:int										=					re.compile(r"([a-z\d])([A-Z])")

lowercase__	:List[str]										=					re.compile(r"(?<!_)_(?!_)")
lowercase__	:List[Any]										=					re.compile(r"(_{2,})")

lowercase__	:List[str]										=					r"^\w+(\.\w+)*$"

lowercase__	:Optional[Any]										=					r"<>:/\|?*"



def  UpperCamelCase					(							lowerCAmelCase__	):
					'''simple docstring'''
					lowercase					=		_uppercase_uppercase_re.sub(R'''\1_\2'''				,    lowerCAmelCase__	)
					lowercase					=		_lowercase_uppercase_re.sub(R'''\1_\2'''				,    lowerCAmelCase__	)
					return name.lower()



def  UpperCamelCase					(							lowerCAmelCase__	):
					'''simple docstring'''
					lowercase					=		_single_underscore_re.split(lowerCAmelCase__	)
					lowercase					=		[_multiple_underscores_re.split(lowerCAmelCase__	) for n in name]
					return "".join(n.capitalize() for n in itertools.chain.from_iterable(lowerCAmelCase__	) if n != ''''''	)



def  UpperCamelCase					(							lowerCAmelCase__	):
					'''simple docstring'''
					if os.path.basename(lowerCAmelCase__	) != name:
										raise ValueError(f'Should be a dataset name, not a path: {name}'	)
					return camelcase_to_snakecase(lowerCAmelCase__	)



def  UpperCamelCase					(							lowerCAmelCase__				,    lowerCAmelCase__	):
					'''simple docstring'''
					if os.path.basename(lowerCAmelCase__	) != name:
										raise ValueError(f'Should be a dataset name, not a path: {name}'	)
					if not re.match(_split_re				,    lowerCAmelCase__	):
										raise ValueError(f'Split name should match \'{_split_re}\'\' but got \'{split}\'.'	)
					return f'{filename_prefix_for_name(lowerCAmelCase__	)}-{split}'



def  UpperCamelCase					(							lowerCAmelCase__				,    lowerCAmelCase__				,    lowerCAmelCase__				,    lowerCAmelCase__=None	):
					'''simple docstring'''
					lowercase					=		filename_prefix_for_split(lowerCAmelCase__				,    lowerCAmelCase__	)
					if filetype_suffix:
										prefix += f'.{filetype_suffix}'
					lowercase					=		os.path.join(lowerCAmelCase__				,    lowerCAmelCase__	)
					return f'{filepath}*'



def  UpperCamelCase					(							lowerCAmelCase__				,    lowerCAmelCase__				,    lowerCAmelCase__				,    lowerCAmelCase__=None				,    lowerCAmelCase__=None	):
					'''simple docstring'''
					lowercase					=		filename_prefix_for_split(lowerCAmelCase__				,    lowerCAmelCase__	)
					lowercase					=		os.path.join(lowerCAmelCase__				,    lowerCAmelCase__	)

					if shard_lengths:
										lowercase					=		len(lowerCAmelCase__	)
										lowercase					=		[f'{prefix}-{shard_id:05d}-of-{num_shards:05d}' for shard_id in range(lowerCAmelCase__	)]
										if filetype_suffix:
															lowercase					=		[filename + f'.{filetype_suffix}' for filename in filenames]
										return filenames
					else:
										lowercase					=		prefix
										if filetype_suffix:
															filename += f'.{filetype_suffix}'
										return [filename]






import os



def  UpperCamelCase					(							lowerCAmelCase__ = "input.txt"	):
					'''simple docstring'''

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

					lowercase					=		len(lowerCAmelCase__	)
					lowercase					=		len(matrix[0]	)

					lowercase					=		[[-1 for _ in range(lowerCAmelCase__	)] for _ in range(lowerCAmelCase__	)]
					for i in range(lowerCAmelCase__	):
										lowercase					=		matrix[i][0]

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

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

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




