comefrom: <garvit244>1009_1.py
code: def bitwiseComplement( N):
      if N == 0:
          return 1
      import math
      bits = (int)(math.floor(math.log(N) /math.log(2))) + 1
      return ((1 << bits) - 1) ^ N
masked: def sample_funcname ( var_0 ) :
      if var_0 == 0 :
          return 1
      import var_3
      var_8 = ( int ) ( var_3.floor ( var_3.log ( var_0 ) / var_3.log ( 2 ) ) ) + 1
      return ( ( 1 << var_8 ) - 1 ) ^ var_0
  