





"""simple docstring"""





def 					__A  (_SCREAMING_SNAKE_CASE     )   ->Dict:





  """simple docstring"""


  if not head:
    return True
  # split the list to two parts
  lowerCAmelCase__				,							lowerCAmelCase__     :List[Any]											=				head.next, head
  while fast and fast.next:
    lowerCAmelCase__     :Any											=				fast.next.next
    lowerCAmelCase__     :Any											=				slow.next
  lowerCAmelCase__     :List[Any]											=				slow.next
  lowerCAmelCase__     :Optional[Any]											=				None  # Don't forget here! But forget still works!
  # reverse the second part
  lowerCAmelCase__     :Optional[int]											=				None
  while second:
    lowerCAmelCase__     :Any											=				second.next
    lowerCAmelCase__     :Optional[int]											=				node
    lowerCAmelCase__     :int											=				second
    lowerCAmelCase__     :List[Any]											=				nxt
  # compare two parts
  # second part has the same or one less node
  while node:
    if node.val != head.val:
      return False
    lowerCAmelCase__     :List[str]											=				node.next
    lowerCAmelCase__     :Optional[Any]											=				head.next
  return True
def 					__A  (_SCREAMING_SNAKE_CASE     )   ->Any:





  """simple docstring"""


  if not head or not head.next:
    return True

  # 1. Get the midpoint (slow)
  lowerCAmelCase__     :str											=				head
  while fast and fast.next:
    lowerCAmelCase__				,							lowerCAmelCase__     :Optional[int]											=				fast.next.next, slow.next

  # 2. Push the second half into the stack
  lowerCAmelCase__     :Optional[Any]											=				[slow.val]
  while slow.next:
    lowerCAmelCase__     :List[Any]											=				slow.next
    stack.append(slow.val     )

  # 3. Comparison
  while stack:
    if stack.pop() != cur.val:
      return False
    lowerCAmelCase__     :int											=				cur.next

  return True




def 					__A  (_SCREAMING_SNAKE_CASE     )   ->Optional[Any]:





  """simple docstring"""


  if not head or not head.next:
    return True
  lowerCAmelCase__     :str											=				{}
  lowerCAmelCase__     :str											=				0
  while head:
    if head.val in d:
      d[head.val].append(_SCREAMING_SNAKE_CASE     )
    else:
      lowerCAmelCase__     :Union[str, Any]											=				[pos]
    lowerCAmelCase__     :Any											=				head.next
    pos += 1
  lowerCAmelCase__     :Dict											=				pos - 1
  lowerCAmelCase__     :int											=				0
  for v in d.values():
    if len(_SCREAMING_SNAKE_CASE     ) % 2 != 0:
      middle += 1
    else:
      lowerCAmelCase__     :Tuple											=				0
      for i in range(0	,  len(_SCREAMING_SNAKE_CASE     )     ):
        if v[i] + v[len(_SCREAMING_SNAKE_CASE     ) - 1 - step] != checksum:
          return False
        step += 1
    if middle > 1:
      return False
  return True






import re
from pathlib import Path
from unittest import TestCase

import pytest


@pytest.mark.integration
class    SCREAMING_SNAKE_CASE_				(       _UpperCamelCase   ):



	"""simple docstring"""


	def 					lowerCamelCase__     (					self		:						Any					,     lowerCAmelCase		:						str	)	->       List[Any]:







						"""simple docstring"""







						with open(lowerCAmelCase					,     encoding="""utf-8"""	) as input_file:
											__UpperCamelCase					:	Union[str, Any]             =      re.compile(R"""(?!.*\b(?:encoding|rb|w|wb|w+|wb+|ab|ab+)\b)(?<=\s)(open)\((.*)\)"""	)
											__UpperCamelCase					:	str             =      input_file.read()
											__UpperCamelCase					:	Optional[int]             =      regexp.search(lowerCAmelCase	)

						return match






	def 					lowerCamelCase__     (					self		:						Optional[Any]					,     lowerCAmelCase		:						str	)	->       Union[str, Any]:







						"""simple docstring"""







						with open(lowerCAmelCase					,     encoding="""utf-8"""	) as input_file:
											__UpperCamelCase					:	Dict             =      re.compile(R"""#[^\r\n]*print\(|\"[^\r\n]*print\(|\"\"\".*?print\(.*?\"\"\"|(print\()"""					,     re.DOTALL	)
											__UpperCamelCase					:	str             =      input_file.read()
											# use `re.finditer` to handle the case where the ignored groups would be matched first by `re.search`
											__UpperCamelCase					:	List[Any]             =      regexp.finditer(lowerCAmelCase	)

						__UpperCamelCase					:	int             =      [match for match in matches if match is not None and match.group(1	) is not None]
						return matches[0] if matches else None






	def 					lowerCamelCase__     (					self		:						List[Any]	)	->       List[str]:







						"""simple docstring"""







						__UpperCamelCase					:	Optional[int]             =      Path("""./datasets"""	)
						__UpperCamelCase					:	Optional[int]             =      list(dataset_paths.absolute().glob("""**/*.py"""	)	)

						for dataset in dataset_files:
											if self._no_encoding_on_file_open(str(lowerCAmelCase	)	):
																raise AssertionError(F'''open(...) must use utf-8 encoding in {dataset}'''	)






	def 					lowerCamelCase__     (					self		:						Optional[Any]	)	->       Any:







						"""simple docstring"""







						__UpperCamelCase					:	Optional[int]             =      Path("""./datasets"""	)
						__UpperCamelCase					:	Optional[int]             =      list(dataset_paths.absolute().glob("""**/*.py"""	)	)

						for dataset in dataset_files:
											if self._no_print_statements(str(lowerCAmelCase	)	):
																raise AssertionError(F'''print statement found in {dataset}. Use datasets.logger/logging instead.'''	)






