comefrom: <doocs>1486.XOR Operation in an Array_1.py
code: def xorOperation( n: int, start: int) -> int:
      res = 0
      for i in range(n):
          res ^= start + (i << 1)
      return res
masked: def sample_funcname ( var_0 : int , var_2 : int ) -> int :
      var_4 = 0
      for var_6 in range ( var_0 ) :
          var_4 ^= var_2 + ( var_6 << 1 )
      return var_4
  