


import importlib.metadata
import subprocess
import sys






def 	UpperCAmelCase__(							_SCREAMING_SNAKE_CASE				:   Any = False   ):






			"""simple docstring"""




			__A=  False
			if "IPython" in sys.modules:
						__A=  'google.colab' in str(sys.modules['IPython'].get_ipython()   )

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







'''simple docstring'''





from typing import Any
class 	a__				:





			'''simple docstring'''

			def __init__(     self       : Any  )			->		int:
						__A=  []
						__A=  0
			def __str__(     self       : Tuple  )			->		Dict:
						__A=  '<' + str(self.stack  )[1:-1] + '>'
						return printed
			def 				lowerCAmelCase    (     self       : Tuple ,						lowerCAmelCase_       : Any  )			->		None:
						self.stack.append(lowerCAmelCase_  )
						__A=  self.length + 1
			def 				lowerCAmelCase    (     self       : int  )			->		Any:
						self.rotate(1  )
						__A=  self.stack[self.length - 1]
						__A=  self.stack[:-1]
						self.rotate(self.length - 1  )
						__A=  self.length - 1
						return dequeued
			def 				lowerCAmelCase    (     self       : Optional[int] ,						lowerCAmelCase_       : int  )			->		None:
						for _ in range(lowerCAmelCase_  ):
									__A=  self.stack[0]
									__A=  self.stack[1:]
									self.put(lowerCAmelCase_  )
									__A=  self.length - 1
			def 				lowerCAmelCase    (     self       : Tuple  )			->		Any:
						__A=  self.get()
						self.put(lowerCAmelCase_  )
						self.rotate(self.length - 1  )
						return front
			def 				lowerCAmelCase    (     self       : Dict  )			->		int:
						return self.length



