





class      A_	:
	def __init__(   self		):






				'''simple docstring'''







				UpperCAmelCase       		=    []
				UpperCAmelCase       		=    0
				UpperCAmelCase       		=    0
	def __str__(   self		):






				'''simple docstring'''







				UpperCAmelCase       		=    '''<''' + str(self.entries		)[1:-1] + '''>'''
				return printed
	def 					_lowercase    (   self							, _A		):






				'''simple docstring'''







				self.entries.append(_A		)
				UpperCAmelCase       		=    self.length + 1
	def 					_lowercase    (   self		):






				'''simple docstring'''







				UpperCAmelCase       		=    self.length - 1
				UpperCAmelCase       		=    self.entries[self.front]
				# self.front-=1
				# self.entries = self.entries[self.front:]
				UpperCAmelCase       		=    self.entries[1:]
				return dequeued
	def 					_lowercase    (   self							, _A		):






				'''simple docstring'''







				for _ in range(_A		):
							self.put(self.get()		)
	def 					_lowercase    (   self		):






				'''simple docstring'''







				return self.entries[0]







	def 					_lowercase    (   self		):






				'''simple docstring'''







				return self.length










def 						__SCREAMING_SNAKE_CASE  (    UpperCamelCase__      ,      UpperCamelCase__      ,      UpperCamelCase__			)  ->    float:







			'''simple docstring'''

			if mass < 0:
						raise ValueError('''The mass of the body cannot be negative'''			)
			if radius <= 0:
						raise ValueError('''The radius is always a positive non zero integer'''			)
			return (mass * (velocity) ** 2) / radius


if __name__ == "__main__":
				import doctest

				doctest.testmod(verbose=True)



