text: # https://leetcode.com/problems/longest-uncommon-subsequence-i/
  
  
  class Solution:
      def findLUSlength(self, a, b):
          """
          :type a: str
          :type b: str
          :rtype: int
          """
          if len(a) > len(b): return len(a)
          if len(a) < len(b): return len(b)
          return len(a) if a != b else -1
  