digraph G { Parameter_0 -> Add_2 Parameter_1 -> Add_2 Add_2 -> Negative_3 -> Negative_4 Parameter_0 [shape=box color=blue] Parameter_1 [shape=box color=blue] Add_2 [shape=ellipse color=black] Negative_3 [shape=ellipse color=black] Negative_4 [shape=ellipse color=black] }