comefrom: <doocs>2031.Count Subarrays With More Ones Than Zeros_1.py
code: def lowbit(x):
      x += int(1e5 + 1)
      return x & -x
masked: def sample_funcname ( var_0 ) :
      var_0 += int ( 1e5 + 1 )
      return var_0 & - var_0
  