0 data=1.2 grad=1.0 1 data=1.2 grad=1.0 1->0 ReLU 2 data=1.2 grad=1.0 2->1 + 3 data=0.2 grad=7.0 3->2 × 4 data=7.0 grad=0.2 4->2 × 5 data=0.0 grad=1.0 5->1 +