






lowerCAmelCase_     =			{
    '+': lambda x, y: x + y,
    '-': lambda x, y: x - y,
    '*': lambda x, y: x * y,
    '/': lambda x, y: x / y,
}







def   snake_case		(				UpperCAmelCase						:							Any ):
				return c.isdigit()







def   snake_case		(				UpperCAmelCase						:							List[Any] ):
				A									=   []

				# iterate over the string in reverse order
				for c in expression.split()[::-1]:
								# push operand to stack
								if is_operand(UpperCAmelCase ):
												stack.append(int(UpperCAmelCase ) )

								else:
												# pop values from stack can calculate the result
												# push the result onto the stack again
												A									=   stack.pop()
												A									=   stack.pop()
												stack.append(calc[c](UpperCAmelCase,    UpperCAmelCase ) )

				return stack.pop()


# Driver code
if __name__ == "__main__":
					lowerCAmelCase_     =			'+ 9 * 2 6'
					print(evaluate(test_expression))

					lowerCAmelCase_     =			'/ * 10 2 + 4 1 '
					print(evaluate(test_expression))













from __future__ import annotations







def   snake_case		(				UpperCAmelCase						:							int,    UpperCAmelCase						:							list[int],    UpperCAmelCase						:							list[int],    UpperCAmelCase						:							int ):

				# Base Case
				if counter == 0 or capacity == 0:
								return 0

				# If weight of the nth item is more than Knapsack of capacity,
				#   then this item cannot be included in the optimal solution,
				# else return the maximum of two cases:
				#   (1) nth item included
				#   (2) not included
				if weights[counter - 1] > capacity:
								return knapsack(UpperCAmelCase,    UpperCAmelCase,    UpperCAmelCase,    counter - 1 )
				else:
								A									=   capacity - weights[counter - 1]
								A									=   values[counter - 1] + knapsack(
								    UpperCAmelCase,    UpperCAmelCase,    UpperCAmelCase,    counter - 1 )
								A									=   knapsack(UpperCAmelCase,    UpperCAmelCase,    UpperCAmelCase,    counter - 1 )
								return max(UpperCAmelCase,    UpperCAmelCase )


if __name__ == "__main__":
					import doctest

					doctest.testmod()





