comefrom: <doocs>0773.Sliding Puzzle_1.py
code: def check(seq):
      n = len(seq)
      cnt = sum(seq[i] > seq[j] for i in range(n) for j in range(i, n))
      return cnt % 2 == 0
masked: def sample_funcname ( var_0 ) :
      var_2 = len ( var_0 )
      var_7 = sum ( var_0 [ var_4 ] > var_0 [ var_5 ] for var_4 in range ( var_2 ) for var_5 in range ( var_4 , var_2 ) )
      return var_7 % 2 == 0
  