input: def sumOfRanges(start, end):
      """
      Compute the sum of square numbers in a given range, including the start and end numbers.
      >>> sumOfRanges(10, 20)
      673
      >>> sumOfRanges(1, 3)
      14
      """
      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