data/shortest_path/graph_structure/easy/graph123.txt

7 14
2 0 3
0 3 2
0 4 2
1 0 3
1 2 3
1 3 1
6 2 1
2 3 1
2 5 1
5 3 1
4 3 3
4 6 2
4 5 2
6 5 4
6 3