code: def __init__(self, y, r):
      self.r = r
      self.y = y
  
imports: import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import function_node
  from chainer.utils import argument
  from chainer.utils import type_check
label_desc: Use image node_id 1 to create a new _RReLUGrad object from inherited base classes: function_node with example: obj = _RReLUGrad(y, r)