input: from typing import List
  
  def Fibonacci(n: int) -> List[int]:
      """ Calculate the Fibonacci numbers up to a given number n and return them as a list.
      >>> Fibonacci(0)
      [0]
      >>> Fibonacci(1)
      [0, 1]
      >>> Fibonacci(5)
      [0, 1, 1, 2, 3, 5]
      """
      if n < 0:
          raise ValueError("Input should be a non-negative integer.")
      fib_sequence = [0]
      if n == 0:
          return fib_sequence
      fib_sequence.append(1)
      while fib_sequence[-1] + fib_sequence[-2] <= n:
          fib_sequence.append(fib_sequence[-1] + fib_sequence[-2])
      return fib_sequence
output:     if n < 0:
          raise ValueError("Input should be a non-negative integer.")
      fib_sequence = [0]
      if n == 0:
          return fib_sequence
      fib_sequence.append(1)
      while fib_sequence[-1] + fib_sequence[-2] <= n:
          fib_sequence.append(fib_sequence[-1] + fib_sequence[-2])
      return fib_sequence