data/flow/graph_structure/easy/graph104.txt

7 15
0 3 9
0 6 5
1 5 10
1 6 6
1 2 4
2 5 10
2 6 8
2 0 8
3 0 7
4 3 2
4 1 2
4 6 3
5 1 5
5 4 2
6 3 1
4 0
5