

'''simple docstring'''

from heapq import heappop, heappush

import numpy as np




def 				UpperCamelCase(					UpperCAmelCase_  ,	UpperCAmelCase_  ,	UpperCAmelCase_  ,	UpperCAmelCase_  ,	):
 UpperCAmelCase ,			UpperCAmelCase	:     Optional[Any]						 =			grid.shape
 UpperCAmelCase	:     List[str]						 =			[-1, 1, 0, 0]
 UpperCAmelCase	:     Optional[int]						 =			[0, 0, -1, 1]
 if allow_diagonal:
  dx += [-1, -1, 1, 1]
  dy += [-1, 1, -1, 1]

 UpperCAmelCase ,			UpperCAmelCase	:     Optional[Any]						 =			[(0, source)], set()
 UpperCAmelCase	:     str						 =			np.full((rows, cols)  ,	np.inf     )
 UpperCAmelCase	:     str						 =			0
 UpperCAmelCase	:     Tuple						 =			np.empty((rows, cols)  ,	dtype=UpperCAmelCase_     )
 UpperCAmelCase	:     Tuple						 =			None

 while queue:
  ((UpperCAmelCase) ,			(UpperCAmelCase))	:     Union[str, Any]						 =			heappop(UpperCAmelCase_     )
  if (x, y) in visited:
   continue
  visited.add((x, y)     )

  if (x, y) == destination:
   UpperCAmelCase	:     int						 =			[]
   while (x, y) != source:
    path.append((x, y)     )
    UpperCAmelCase ,			UpperCAmelCase	:     Tuple						 =			predecessors[x, y]
   path.append(UpperCAmelCase_     )  # add the source manually
   path.reverse()
   return matrix[destination], path

  for i in range(len(UpperCAmelCase_     )     ):
   UpperCAmelCase ,			UpperCAmelCase	:     Optional[int]						 =			x + dx[i], y + dy[i]
   if 0 <= nx < rows and 0 <= ny < cols:
    UpperCAmelCase	:     Optional[int]						 =			grid[nx][ny]
    if next_node == 1 and matrix[nx, ny] > dist + 1:
     heappush(UpperCAmelCase_  ,	(dist + 1, (nx, ny))     )
     UpperCAmelCase	:     Dict						 =			dist + 1
     UpperCAmelCase	:     Optional[int]						 =			(x, y)

 return np.inf, []


if __name__ == "__main__":
 import doctest

 doctest.testmod()







'''simple docstring'''

# Lint as: python3
import itertools
import os
import re


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

lowercase__         =      re.compile(r"(?<!_)_(?!_)")
lowercase__         =      re.compile(r"(_{2,})")

lowercase__         =      r"^\w+(\.\w+)*$"

lowercase__         =      r"<>:/\|?*"




def 				UpperCamelCase(					UpperCAmelCase_     ):
 UpperCAmelCase	:     List[str]						 =			_uppercase_uppercase_re.sub(R'\1_\2'  ,	UpperCAmelCase_     )
 UpperCAmelCase	:     str						 =			_lowercase_uppercase_re.sub(R'\1_\2'  ,	UpperCAmelCase_     )
 return name.lower()




def 				UpperCamelCase(					UpperCAmelCase_     ):
 UpperCAmelCase	:     List[str]						 =			_single_underscore_re.split(UpperCAmelCase_     )
 UpperCAmelCase	:     Optional[Any]						 =			[_multiple_underscores_re.split(UpperCAmelCase_     ) for n in name]
 return "".join(n.capitalize() for n in itertools.chain.from_iterable(UpperCAmelCase_     ) if n != ''     )




def 				UpperCamelCase(					UpperCAmelCase_     ):
 if os.path.basename(UpperCAmelCase_     ) != name:
  raise ValueError(F"""Should be a dataset name, not a path: {name}"""     )
 return camelcase_to_snakecase(UpperCAmelCase_     )




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




def 				UpperCamelCase(					UpperCAmelCase_  ,	UpperCAmelCase_  ,	UpperCAmelCase_  ,	UpperCAmelCase_=None     ):
 UpperCAmelCase	:     Dict						 =			filename_prefix_for_split(UpperCAmelCase_  ,	UpperCAmelCase_     )
 if filetype_suffix:
  prefix += F""".{filetype_suffix}"""
 UpperCAmelCase	:     Optional[int]						 =			os.path.join(UpperCAmelCase_  ,	UpperCAmelCase_     )
 return F"""{filepath}*"""




def 				UpperCamelCase(					UpperCAmelCase_  ,	UpperCAmelCase_  ,	UpperCAmelCase_  ,	UpperCAmelCase_=None  ,	UpperCAmelCase_=None     ):
 UpperCAmelCase	:     Optional[int]						 =			filename_prefix_for_split(UpperCAmelCase_  ,	UpperCAmelCase_     )
 UpperCAmelCase	:     str						 =			os.path.join(UpperCAmelCase_  ,	UpperCAmelCase_     )

 if shard_lengths:
  UpperCAmelCase	:     List[str]						 =			len(UpperCAmelCase_     )
  UpperCAmelCase	:     List[str]						 =			[F"""{prefix}-{shard_id:05d}-of-{num_shards:05d}""" for shard_id in range(UpperCAmelCase_     )]
  if filetype_suffix:
   UpperCAmelCase	:     Dict						 =			[filename + F""".{filetype_suffix}""" for filename in filenames]
  return filenames
 else:
  UpperCAmelCase	:     Optional[Any]						 =			prefix
  if filetype_suffix:
   filename += F""".{filetype_suffix}"""
  return [filename]




