| In a directed graph, the nodes are numbered from 0 to 18, and the edges are: |
| an edge from node 0 to node 12 with capacity 19, |
| an edge from node 0 to node 15 with capacity 5, |
| an edge from node 0 to node 4 with capacity 12, |
| an edge from node 0 to node 6 with capacity 3, |
| an edge from node 1 to node 18 with capacity 7, |
| an edge from node 1 to node 15 with capacity 15, |
| an edge from node 1 to node 0 with capacity 12, |
| an edge from node 1 to node 13 with capacity 10, |
| an edge from node 1 to node 4 with capacity 5, |
| an edge from node 1 to node 14 with capacity 1, |
| an edge from node 1 to node 11 with capacity 13, |
| an edge from node 1 to node 16 with capacity 16, |
| an edge from node 2 to node 3 with capacity 9, |
| an edge from node 2 to node 17 with capacity 17, |
| an edge from node 2 to node 6 with capacity 13, |
| an edge from node 2 to node 8 with capacity 2, |
| an edge from node 2 to node 16 with capacity 8, |
| an edge from node 3 to node 12 with capacity 6, |
| an edge from node 3 to node 17 with capacity 19, |
| an edge from node 3 to node 0 with capacity 2, |
| an edge from node 3 to node 13 with capacity 14, |
| an edge from node 3 to node 4 with capacity 19, |
| an edge from node 3 to node 6 with capacity 10, |
| an edge from node 3 to node 14 with capacity 18, |
| an edge from node 3 to node 8 with capacity 13, |
| an edge from node 4 to node 3 with capacity 14, |
| an edge from node 4 to node 17 with capacity 9, |
| an edge from node 4 to node 0 with capacity 6, |
| an edge from node 4 to node 14 with capacity 4, |
| an edge from node 4 to node 11 with capacity 4, |
| an edge from node 5 to node 1 with capacity 2, |
| an edge from node 5 to node 11 with capacity 17, |
| an edge from node 5 to node 16 with capacity 20, |
| an edge from node 6 to node 13 with capacity 16, |
| an edge from node 6 to node 10 with capacity 11, |
| an edge from node 7 to node 3 with capacity 8, |
| an edge from node 7 to node 12 with capacity 1, |
| an edge from node 7 to node 8 with capacity 15, |
| an edge from node 7 to node 11 with capacity 2, |
| an edge from node 8 to node 5 with capacity 12, |
| an edge from node 8 to node 0 with capacity 11, |
| an edge from node 8 to node 13 with capacity 11, |
| an edge from node 9 to node 17 with capacity 7, |
| an edge from node 9 to node 4 with capacity 14, |
| an edge from node 9 to node 7 with capacity 11, |
| an edge from node 9 to node 6 with capacity 2, |
| an edge from node 9 to node 14 with capacity 4, |
| an edge from node 9 to node 8 with capacity 3, |
| an edge from node 10 to node 3 with capacity 14, |
| an edge from node 10 to node 13 with capacity 10, |
| an edge from node 10 to node 14 with capacity 10, |
| an edge from node 10 to node 16 with capacity 18, |
| an edge from node 11 to node 12 with capacity 11, |
| an edge from node 11 to node 5 with capacity 9, |
| an edge from node 11 to node 13 with capacity 13, |
| an edge from node 11 to node 7 with capacity 18, |
| an edge from node 11 to node 14 with capacity 1, |
| an edge from node 11 to node 9 with capacity 1, |
| an edge from node 11 to node 8 with capacity 6, |
| an edge from node 12 to node 17 with capacity 8, |
| an edge from node 12 to node 7 with capacity 8, |
| an edge from node 12 to node 10 with capacity 1, |
| an edge from node 12 to node 14 with capacity 15, |
| an edge from node 12 to node 9 with capacity 4, |
| an edge from node 13 to node 2 with capacity 3, |
| an edge from node 13 to node 6 with capacity 6, |
| an edge from node 13 to node 14 with capacity 10, |
| an edge from node 13 to node 11 with capacity 8, |
| an edge from node 14 to node 13 with capacity 14, |
| an edge from node 14 to node 10 with capacity 6, |
| an edge from node 14 to node 11 with capacity 19, |
| an edge from node 15 to node 3 with capacity 4, |
| an edge from node 15 to node 4 with capacity 12, |
| an edge from node 15 to node 14 with capacity 5, |
| an edge from node 16 to node 3 with capacity 3, |
| an edge from node 16 to node 15 with capacity 18, |
| an edge from node 16 to node 5 with capacity 7, |
| an edge from node 16 to node 14 with capacity 2, |
| an edge from node 16 to node 11 with capacity 4, |
| an edge from node 17 to node 2 with capacity 11, |
| an edge from node 17 to node 18 with capacity 6, |
| an edge from node 18 to node 8 with capacity 11. |