<gh_stars>1-10
class Solution:
  def countConsistentStrings(self, allowed: str, words: List[str]) -> int:
    return sum([set(word) <= set(allowed) for word in words])

class Solution:
  def countConsistentStrings(self, allowed: str, words: List[str]) -> int:
    return sum([set(word) <= set(allowed) for word in words])