restore x0, x1
restore x0, x1

niboshi/chainer,wkentaro/chainer,wkentaro/chainer,keisuke-umezawa/chainer,pfnet/chainer,hvy/chainer,okuta/chainer,okuta/chainer,ktnyt/chainer,rezoo/chainer,jnishi/chainer,jnishi/chainer,ronekko/chainer,keisuke-umezawa/chainer,jnishi/chainer,hvy/chainer,ktnyt/chainer,chainer/chainer,niboshi/chainer,ktnyt/chainer,jnishi/chainer,keisuke-umezawa/chainer,chainer/chainer,niboshi/chainer,hvy/chainer,chainer/chainer,okuta/chainer,keisuke-umezawa/chainer,tkerola/chainer,niboshi/chainer,wkentaro/chainer,ktnyt/chainer,wkentaro/chainer,okuta/chainer,anaruse/chainer,hvy/chainer,chainer/chainer