digraph G { som0 [label="0"]; som1 [label="1"]; som2 [label="2"]; som3 [label="3"]; som4 [label="4"]; som0 -> som1 [label="2"]; som0 -> som2 [label="4"]; som0 -> som3 [label="2",style=bold]; som1 -> som4 [label="1"]; som2 -> som4 [label="4",style=bold]; som3 -> som2 [label="1",style=bold]; }