comefrom: <doocs>1641.Count Sorted Vowel Strings_1.py
code: def countVowelStrings( n: int) -> int:
      cnt = [1] * 5
      for i in range(2, n + 1):
          for j in range(3, -1, -1):
              cnt[j] += cnt[j + 1]
      return sum(cnt)
masked: def sample_funcname ( var_0 : int ) -> int :
      var_4 = [ 1 ] * 5
      for var_7 in range ( 2 , var_0 + 1 ) :
          for var_9 in range ( 3 , - 1 , - 1 ) :
              var_4 [ var_9 ] += var_4 [ var_9 + 1 ]
      return sum ( var_4 )
  