from __future__ import annotations

import sys
from collections import deque
from typing import Generic, TypeVar

__A      =				TypeVar('T')





class 						SCREAMING_SNAKE_CASE				( Generic[T]					):





							"""simple docstring"""

							A_						  =					42  # Cache store of keys
							A_						  =					42  # References of the keys in cache
							A_						  =					10  # Maximum capacity of cache

							def __init__(  self:   Optional[int]		,     __A:   int   )    ->				None:
												_A								= deque()
												_A								= set()
												if not n:
																	_A								= sys.maxsize
												elif n < 0:
																	raise ValueError('''n should be an integer greater than 0.'''   )
												else:
																	_A								= n

							def       __A (  self:   Union[str, Any]		,     __A:   T   )    ->				None:
												if x not in self.key_reference:
																	if len(self.dq_store   ) == LRUCache._MAX_CAPACITY:
																						_A								= self.dq_store.pop()
																						self.key_reference.remove(__A   )
												else:
																	self.dq_store.remove(__A   )

												self.dq_store.appendleft(__A   )
												self.key_reference.add(__A   )

							def       __A (  self:   Any   )    ->				None:
												for k in self.dq_store:
																	print(__A   )



							def __repr__(  self:   Any   )    ->				str:
												return f"""LRUCache({self._MAX_CAPACITY}) => {list(self.dq_store   )}"""


if __name__ == "__main__":
				import doctest

				doctest.testmod()

				__A      =				LRUCache(4)
				lru_cache.refer('A')
				lru_cache.refer(2)
				lru_cache.refer(3)
				lru_cache.refer('A')
				lru_cache.refer(4)
				lru_cache.refer(5)
				lru_cache.display()

				print(lru_cache)
				assert str(lru_cache) == "LRUCache(4) => [5, 4, 'A', 3]"











def      __A					(     _lowercase					,			_lowercase					,			_lowercase					,			_lowercase ):

					'''simple docstring'''







					_A							,_A								= len(_lowercase ), len(grid[0] )
					if (
					    min(_lowercase					,			_lowercase ) < 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) )

					_A								= 0
					count += depth_first_search(_lowercase					,			row + 1					,			_lowercase					,			_lowercase )
					count += depth_first_search(_lowercase					,			row - 1					,			_lowercase					,			_lowercase )
					count += depth_first_search(_lowercase					,			_lowercase					,			col + 1					,			_lowercase )
					count += depth_first_search(_lowercase					,			_lowercase					,			col - 1					,			_lowercase )

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


if __name__ == "__main__":
				import doctest

				doctest.testmod()



