

'''simple docstring'''

from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available


a       :      str  	=			{'configuration_bit': ['BIT_PRETRAINED_CONFIG_ARCHIVE_MAP', 'BitConfig', 'BitOnnxConfig']}

try:
				if not is_torch_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				a       :      Dict  	=			[
				    'BIT_PRETRAINED_MODEL_ARCHIVE_LIST',
				    'BitForImageClassification',
				    'BitModel',
				    'BitPreTrainedModel',
				    'BitBackbone',
				]


try:
				if not is_vision_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				a       :      Tuple  	=			['BitImageProcessor']


if TYPE_CHECKING:
				from .configuration_bit import BIT_PRETRAINED_CONFIG_ARCHIVE_MAP, BitConfig, BitOnnxConfig

				try:
								if not is_torch_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_bit import (
								    BIT_PRETRAINED_MODEL_ARCHIVE_LIST,
								    BitBackbone,
								    BitForImageClassification,
								    BitModel,
								    BitPreTrainedModel,
								)

				try:
								if not is_vision_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .image_processing_bit import BitImageProcessor

else:
				import sys

				a       :      Dict  	=			_LazyModule(__name__, globals()["__file__"], _import_structure)



'''simple docstring'''

from __future__ import annotations







class   UpperCamelCase__   :


		"""simple docstring"""

		def __init__(			self   ,      snake_case      ):


							'''simple docstring'''

							UpperCAmelCase		:							str        =       data
							UpperCAmelCase		:							Dict        =       None







class   UpperCamelCase__   :


		"""simple docstring"""

		def __init__(			self      ):


							'''simple docstring'''

							UpperCAmelCase		:							str        =       None







		def 				A_	(			self   ,      snake_case      ):


							'''simple docstring'''

							UpperCAmelCase		:							int        =       Node(snake_case      )
							UpperCAmelCase		:							Optional[int]        =       self.head
							UpperCAmelCase		:							Union[str, Any]        =       new_node
							return self.head.data







		def 				A_	(			self      ):


							'''simple docstring'''

							UpperCAmelCase		:							Dict        =       self.head
							UpperCAmelCase		:							str        =       self.head
							if self.head:
												while fast_pointer and fast_pointer.next:
																	UpperCAmelCase		:							List[str]        =       fast_pointer.next.next
																	UpperCAmelCase		:							Any        =       slow_pointer.next
												return slow_pointer.data
							else:
												print("No element found."      )
												return None


if __name__ == "__main__":
				a       :      List[str]  	=			LinkedList()
				for _ in range(int(input().strip())):
								a       :      str  	=			int(input().strip())
								link.push(data)
				print(link.middle_element())
