

"""simple docstring"""


from heapq import heappop, heappush

import numpy as np



def   _A					(	_a	:						np.ndarray     ,   _a	:						tuple[int, int]     ,   _a	:						tuple[int, int]     ,   _a	:						bool     ,   ):



      """simple docstring"""






      A  ,			A				  =		grid.shape
      A				  =		[-1, 1, 0, 0]
      A				  =		[0, 0, -1, 1]
      if allow_diagonal:
            dx += [-1, -1, 1, 1]
            dy += [-1, 1, -1, 1]

      A  ,			A				  =		[(0, source)], set()
      A				  =		np.full((rows, cols)     ,   np.inf				)
      A				  =		0
      A				  =		np.empty((rows, cols)     ,   dtype=_a				)
      A				  =		None

      while queue:
            ((A)  ,			(A))				  =		heappop(_a				)
            if (x, y) in visited:
                  continue
            visited.add((x, y)				)

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

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

      return np.inf, []


if __name__ == "__main__":
  import doctest

  doctest.testmod()







"""simple docstring"""


import re

from filelock import FileLock


try:
  import nltk

  UpperCAmelCase													=True
except (ImportError, ModuleNotFoundError):
  UpperCAmelCase													=False

if NLTK_AVAILABLE:
  with FileLock(".lock") as lock:
    nltk.download("punkt", quiet=True)



def   _A					(	_a	:						str				):



      """simple docstring"""






      re.sub("""<n>"""     ,   """"""     ,   _a				)  # remove pegasus newline char
      assert NLTK_AVAILABLE, "nltk must be installed to separate newlines between sentences. (pip install nltk)"
      return "\n".join(nltk.sent_tokenize(_a				)				)




