data/flow/graph_structure/easy/graph128.txt

7 13
0 6 8
1 2 8
1 3 3
2 3 5
2 6 1
3 5 9
3 4 2
4 2 1
4 3 7
5 2 8
5 1 6
5 6 4
6 3 8
1 4
2