



import copy

from ...configuration_utils import PretrainedConfig
from ...utils import logging


UpperCAmelCase							 =					logging.get_logger(__name__)

class  __snake_case      (   SCREAMING_SNAKE_CASE):







							'''simple docstring'''






							UpperCamelCase__				:      int         =					"""encoder-decoder"""
							UpperCamelCase__				:      int         =					True


							def __init__(							self  ,  **a_		):
											super().__init__(**a_		)
											assert (
											    "encoder" in kwargs and "decoder" in kwargs
											), "Config has to be initialized with encoder and decoder config"
											a__				      =		kwargs.pop("""encoder"""		)
											a__				      =		encoder_config.pop("""model_type"""		)
											a__				      =		kwargs.pop("""decoder"""		)
											a__				      =		decoder_config.pop("""model_type"""		)

											from ..auto.configuration_auto import AutoConfig

											a__				      =		AutoConfig.for_model(a_  ,  **a_		)
											a__				      =		AutoConfig.for_model(a_  ,  **a_		)
											a__				      =		True


							@classmethod
							def _a      (							cls  ,  a_  ,  a_  ,  **a_		):
											logger.info("""Set `config.is_decoder=True` and `config.add_cross_attention=True` for decoder_config"""		)
											a__				      =		True
											a__				      =		True

											return cls(encoder=encoder_config.to_dict()  ,  decoder=decoder_config.to_dict()  ,  **a_		)







							def _a      (							self		):
											a__				      =		copy.deepcopy(self.__dict__		)
											a__				      =		self.encoder.to_dict()
											a__				      =		self.decoder.to_dict()
											a__				      =		self.__class__.model_type
											return output






def 			A_      (	__a     :				Any		):

				"""simple docstring"""
				if not head:
								return True
				# split the list to two parts
				a__      ,			a__				      =		head.next, head
				while fast and fast.next:
								a__				      =		fast.next.next
								a__				      =		slow.next
				a__				      =		slow.next
				a__				      =		None  # Don't forget here! But forget still works!
				# reverse the second part
				a__				      =		None
				while second:
								a__				      =		second.next
								a__				      =		node
								a__				      =		second
								a__				      =		nxt
				# compare two parts
				# second part has the same or one less node
				while node:
								if node.val != head.val:
												return False
								a__				      =		node.next
								a__				      =		head.next
				return True

def 			A_      (	__a     :				int		):

				"""simple docstring"""
				if not head or not head.next:
								return True

				# 1. Get the midpoint (slow)
				a__				      =		a__				      =		a__				      =		head
				while fast and fast.next:
								a__      ,			a__				      =		fast.next.next, slow.next

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

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

				return True




def 			A_      (	__a     :				Any		):

				"""simple docstring"""
				if not head or not head.next:
								return True
				a__				      =		{}
				a__				      =		0
				while head:
								if head.val in d:
												d[head.val].append(__a		)
								else:
												a__				      =		[pos]
								a__				      =		head.next
								pos += 1
				a__				      =		pos - 1
				a__				      =		0
				for v in d.values():
								if len(__a		) % 2 != 0:
												middle += 1
								else:
												a__				      =		0
												for i in range(0 ,		len(__a		)		):
																if v[i] + v[len(__a		) - 1 - step] != checksum:
																				return False
																step += 1
								if middle > 1:
												return False
				return True

