data/hamilton/graph_structure/hard/graph128.txt

13 38
6 11
10 7
11 3
8 3
12 0
2 10
5 3
1 2
8 5
0 4
7 11
5 4
10 3
10 11
11 8
4 7
2 9
12 9
1 3
5 7
4 6
9 5
4 11
3 12
10 0
9 0
6 5
2 3
12 1
4 3
8 0
7 12
5 0
12 2
4 2
4 8
8 12
5 2