** NOTE - this is not the answer! It just shows the format **

Immediately before call # 1 to DFSv:
Unvisited: 0 1 2 3 4
Visited, not done:
Done:

Immediately before call # 2 to DFSv:
Unvisited: 1 2 3 4
Visited, not done: 0
Done:

Immediately before call # 3 to DFSv:
Unvisited: 2 3 4
Visited, not done: 0 1
Done:

Immediately before call # 4 to DFSv:
Unvisited: 3 4
Visited, not done: 0 1
Done: 2

Immediately before call # 5 to DFSv:
Unvisited: 4
Visited, not done: 0 1 3
Done: 2

Node 0 seen at time 0, done at time 9
Node 1 seen at time 1, done at time 8
Node 2 seen at time 2, done at time 3
Node 3 seen at time 4, done at time 7
Node 4 seen at time 5, done at time 6

Tree arcs: (0, 1) (1, 2) (1, 3) (3, 4)
Forward arcs: (0, 4)
Back arcs: (4, 3)
Cross arcs: (3, 2) (4, 2)