



def       __lowercase  (					a__				,  a__				,  a__				,  a__  )							->					int:
							__SCREAMING_SNAKE_CASE										=   len(__UpperCAmelCase  ), len(grid[0]  )
							if (
							    min(__UpperCAmelCase				,  __UpperCAmelCase  ) < 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)  )

							__SCREAMING_SNAKE_CASE										=   0
							count += depth_first_search(__UpperCAmelCase				,  row + 1				,  __UpperCAmelCase				,  __UpperCAmelCase  )
							count += depth_first_search(__UpperCAmelCase				,  row - 1				,  __UpperCAmelCase				,  __UpperCAmelCase  )
							count += depth_first_search(__UpperCAmelCase				,  __UpperCAmelCase				,  col + 1				,  __UpperCAmelCase  )
							count += depth_first_search(__UpperCAmelCase				,  __UpperCAmelCase				,  col - 1				,  __UpperCAmelCase  )

							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_tokenizers_available,
    is_torch_available,
    is_vision_available,
)


a							   =				{
    'configuration_owlvit': [
        'OWLVIT_PRETRAINED_CONFIG_ARCHIVE_MAP',
        'OwlViTConfig',
        'OwlViTOnnxConfig',
        'OwlViTTextConfig',
        'OwlViTVisionConfig',
    ],
    'processing_owlvit': ['OwlViTProcessor'],
}


try:
	if not is_vision_available():
		raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
	pass
else:
	a							   =				['OwlViTFeatureExtractor']
	a							   =				['OwlViTImageProcessor']

try:
	if not is_torch_available():
		raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
	pass
else:
	a							   =				[
	    'OWLVIT_PRETRAINED_MODEL_ARCHIVE_LIST',
	    'OwlViTModel',
	    'OwlViTPreTrainedModel',
	    'OwlViTTextModel',
	    'OwlViTVisionModel',
	    'OwlViTForObjectDetection',
	]

if TYPE_CHECKING:
	from .configuration_owlvit import (
	    OWLVIT_PRETRAINED_CONFIG_ARCHIVE_MAP,
	    OwlViTConfig,
	    OwlViTOnnxConfig,
	    OwlViTTextConfig,
	    OwlViTVisionConfig,
	)
	from .processing_owlvit import OwlViTProcessor

	try:
		if not is_vision_available():
			raise OptionalDependencyNotAvailable()
	except OptionalDependencyNotAvailable:
		pass
	else:
		from .feature_extraction_owlvit import OwlViTFeatureExtractor
		from .image_processing_owlvit import OwlViTImageProcessor

	try:
		if not is_torch_available():
			raise OptionalDependencyNotAvailable()
	except OptionalDependencyNotAvailable:
		pass
	else:
		from .modeling_owlvit import (
		    OWLVIT_PRETRAINED_MODEL_ARCHIVE_LIST,
		    OwlViTForObjectDetection,
		    OwlViTModel,
		    OwlViTPreTrainedModel,
		    OwlViTTextModel,
		    OwlViTVisionModel,
		)

else:
	import sys

	a							   =				_LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)




