comefrom: <doocs>0069.Sqrt(x)_1.py
code: def mySqrt( x: int) -> int:
      left, right = 0, x
      while left < right:
          mid = (left + right + 1) >> 1
          if mid <= x // mid:
              left = mid
          else:
              right = mid - 1
      return left
masked: def sample_funcname ( var_0 : int ) -> int :
      var_3 , var_4 = 0 , var_0
      while var_3 < var_4 :
          var_6 = ( var_3 + var_4 + 1 ) >> 1
          if var_6 <= var_0 // var_6 :
              var_3 = var_6
          else :
              var_4 = var_6 - 1
      return var_3
  