data/hamilton/graph_structure/hard/graph125.txt

13 31
1 0
9 3
7 3
0 10
12 9
2 7
4 7
2 0
2 8
10 8
8 7
6 5
6 2
4 8
7 0
6 8
9 8
1 2
3 10
7 5
0 8
4 6
5 3
10 4
9 5
3 4
8 5
0 11
6 11
6 1
3 0