input: 
  def sumOfSquares(start: int, end: int) -> int:
      """Compute the sum of square numbers in a given range, including the start and end numbers.
      >>> sumOfSquares(10, 20)
      673
      >>> sumOfSquares(5, 10)
      355
      """
      sum = 0
      for i in range(start, end + 1):
          sum += i * i
      return sum
  
output:     sum = 0
      for i in range(start, end + 1):
          sum += i * i
      return sum