



'''simple docstring'''






from typing import Any

class     SCREAMING_SNAKE_CASE:







	"""simple docstring"""






	def __init__(						self      :					Optional[Any]		)      ->		Optional[int]:
								UpperCAmelCase			:	List[str]										=		[]
								UpperCAmelCase			:	Any										=		0







	def __str__(						self      :					Union[str, Any]		)      ->		Dict:
								UpperCAmelCase			:	Union[str, Any]										=		'''<''' + str(self.stack		)[1:-1] + '''>'''
								return printed







	def 					A     (						self      :					Dict		,      __snake_case      :					Any		)      ->		None:
								self.stack.append(__snake_case		)
								UpperCAmelCase			:	Optional[Any]										=		self.length + 1







	def 					A     (						self      :					int		)      ->		Any:
								self.rotate(1		)
								UpperCAmelCase			:	Union[str, Any]										=		self.stack[self.length - 1]
								UpperCAmelCase			:	Any										=		self.stack[:-1]
								self.rotate(self.length - 1		)
								UpperCAmelCase			:	int										=		self.length - 1
								return dequeued







	def 					A     (						self      :					List[Any]		,      __snake_case      :					int		)      ->		None:
								for _ in range(__snake_case		):
															UpperCAmelCase			:	Tuple										=		self.stack[0]
															UpperCAmelCase			:	Tuple										=		self.stack[1:]
															self.put(__snake_case		)
															UpperCAmelCase			:	Tuple										=		self.length - 1







	def 					A     (						self      :					str		)      ->		Any:
								UpperCAmelCase			:	int										=		self.get()
								self.put(__snake_case		)
								self.rotate(self.length - 1		)
								return front







	def 					A     (						self      :					str		)      ->		int:
								return self.length










'''simple docstring'''






import importlib.metadata
import subprocess
import sys


def 			snake_case_					( _lowerCAmelCase  :						bool = False  )				->       str:
							UpperCAmelCase			:	List[str]										=		False
							if "IPython" in sys.modules:
														UpperCAmelCase			:	Optional[Any]										=		'''google.colab''' in str(sys.modules['''IPython'''].get_ipython()  )

							if in_colab:
														if upgrade:
																					UpperCAmelCase			:	List[Any]										=		['''pip''', '''install''', '''-U''', '''torch''']
																					subprocess.run(_lowerCAmelCase       ,				check=_lowerCAmelCase  )
														# get the current version of torch
														UpperCAmelCase			:	Dict										=		importlib.metadata.version('''torch'''  )
														UpperCAmelCase			:	int										=		torch_version[: torch_version.rindex('''.'''  )]
														UpperCAmelCase			:	Any										=		f"""https://storage.googleapis.com/tpu-pytorch/wheels/colab/torch_xla-{torch_version_trunc}-cp37-cp37m-linux_x86_64.whl"""
														UpperCAmelCase			:	List[str]										=		['''pip''', '''install''', xla_wheel]
														subprocess.run(_lowerCAmelCase       ,				check=_lowerCAmelCase  )
							else:
														raise RuntimeError('''`install_xla` utility works only on google colab.'''  )





