




"""simple docstring"""






def 							UpperCAmelCase		(		snake_case			:					Union[str, Any]    ):
					if not head:
										return True
					# split the list to two parts
					_lowerCAmelCase							,   _lowerCAmelCase:Tuple									=  head.next, head
					while fast and fast.next:
										_lowerCAmelCase:List[Any]									=  fast.next.next
										_lowerCAmelCase:Union[str, Any]									=  slow.next
					_lowerCAmelCase:Optional[Any]									=  slow.next
					_lowerCAmelCase:List[str]									=  None  # Don't forget here! But forget still works!
					# reverse the second part
					_lowerCAmelCase:Tuple									=  None
					while second:
										_lowerCAmelCase:Optional[int]									=  second.next
										_lowerCAmelCase:Any									=  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:Optional[int]									=  node.next
										_lowerCAmelCase:Dict									=  head.next
					return True





def 							UpperCAmelCase		(		snake_case			:					Any    ):
					if not head or not head.next:
										return True

					# 1. Get the midpoint (slow)
					_lowerCAmelCase:Any									=  head
					while fast and fast.next:
										_lowerCAmelCase							,   _lowerCAmelCase:List[Any]									=  fast.next.next, slow.next

					# 2. Push the second half into the stack
					_lowerCAmelCase:Tuple									=  [slow.val]
					while slow.next:
										_lowerCAmelCase:Dict									=  slow.next
										stack.append(slow.val    )

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

					return True





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












"""simple docstring"""






from dataclasses import dataclass
from typing import List, Optional, Union

import numpy as np
import torch

from ...utils import BaseOutput, OptionalDependencyNotAvailable, is_torch_available, is_transformers_available




@dataclass
class   a__			(       UpperCamelCase_  ):
						snake_case__             = 42


try:
				if not (is_transformers_available() and is_torch_available()):
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				from ...utils.dummy_torch_and_transformers_objects import *  # noqa F403
else:
				from .pipeline_text_to_video_synth import TextToVideoSDPipeline
				from .pipeline_text_to_video_synth_imgaimg import VideoToVideoSDPipeline  # noqa: F401
				from .pipeline_text_to_video_zero import TextToVideoZeroPipeline






