


'''simple docstring'''

def lowerCamelCase      (      lowerCAmelCase    :     list[list[int]]		,		lowerCAmelCase    :     int		,		lowerCAmelCase    :     int		,		lowerCAmelCase    :     set		):





	"""simple docstring"""







	__magic_name__	:   Tuple					     =					len(lowerCAmelCase		), len(grid[0]		)
	if (
	    min(lowerCAmelCase		,		lowerCAmelCase		) < 0
	    or row == row_length
	    or col == col_length
	    or (row, col) in visit
	    or grid[row][col] == 1
	):
		return 0
	if row == row_length - 1 and col == col_length - 1:
		return 1

	visit.add((row, col)		)

	__magic_name__	:   Any					     =					0
	count += depth_first_search(lowerCAmelCase		,		row + 1		,		lowerCAmelCase		,		lowerCAmelCase		)
	count += depth_first_search(lowerCAmelCase		,		row - 1		,		lowerCAmelCase		,		lowerCAmelCase		)
	count += depth_first_search(lowerCAmelCase		,		lowerCAmelCase		,		col + 1		,		lowerCAmelCase		)
	count += depth_first_search(lowerCAmelCase		,		lowerCAmelCase		,		col - 1		,		lowerCAmelCase		)

	visit.remove((row, col)		)
	return count


if __name__ == "__main__":
							import doctest

							doctest.testmod()



'''simple docstring'''

from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_flax_available,
    is_tf_available,
    is_torch_available,
)


lowerCAmelCase				:str        =      {
    '''configuration_vision_encoder_decoder''': ['''VisionEncoderDecoderConfig''', '''VisionEncoderDecoderOnnxConfig''']
}

try:
							if not is_torch_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							lowerCAmelCase				:List[str]        =      ['''VisionEncoderDecoderModel''']

try:
							if not is_tf_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							lowerCAmelCase				:List[str]        =      ['''TFVisionEncoderDecoderModel''']

try:
							if not is_flax_available():
														raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
							pass
else:
							lowerCAmelCase				:Optional[Any]        =      ['''FlaxVisionEncoderDecoderModel''']

if TYPE_CHECKING:
							from .configuration_vision_encoder_decoder import VisionEncoderDecoderConfig, VisionEncoderDecoderOnnxConfig

							try:
														if not is_torch_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .modeling_vision_encoder_decoder import VisionEncoderDecoderModel

							try:
														if not is_tf_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .modeling_tf_vision_encoder_decoder import TFVisionEncoderDecoderModel

							try:
														if not is_flax_available():
																					raise OptionalDependencyNotAvailable()
							except OptionalDependencyNotAvailable:
														pass
							else:
														from .modeling_flax_vision_encoder_decoder import FlaxVisionEncoderDecoderModel

else:
							import sys

							lowerCAmelCase				:Tuple        =      _LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)