comefrom: <garvit244>1079_1.py
code: def numTilePossibilities( tiles):
      if not tiles:
          return 0
      
      import collections
      unique = set(tiles)
      freq_map =  collections.Counter(tiles)
      total_len = 1
      while total_len < len(tiles):
          new = set()
          for char in tiles:
              for comb in unique:
                  new_seq = comb+char
                  up_freq = collections.Counter(new_seq)
                  flag =True
                  for key, val in up_freq.items():
                      if val > freq_map[key]:
                          flag = False
                  if flag:
                      new.add(new_seq)
          unique.update(new)
                  
          total_len += 1
      return len(unique)
masked: def sample_funcname ( var_0 ) :
      if not var_0 :
          return 0
      import var_2
      var_4 = set ( var_0 )
      var_6 = var_2.Counter ( var_0 )
      var_8 = 1
      while var_8 < len ( var_0 ) :
          var_10 = set ( )
          for var_11 in var_0 :
              for var_12 in var_4 :
                  var_13 = var_12 + var_11
                  var_14 = var_2.Counter ( var_13 )
                  var_16 = True
                  for var_18 , var_19 in var_14.items ( ) :
                      if var_19 > var_6 [ var_18 ] :
                          var_16 = False
                  if var_16 :
                      var_10.add ( var_13 )
          var_4.update ( var_10 )
          var_8 += 1
      return len ( var_4 )
  