data/hamilton/graph_structure/hard/graph120.txt

13 29
6 0
12 3
3 9
6 1
7 12
11 7
8 7
5 10
5 2
3 6
1 3
1 11
11 6
2 12
0 4
9 0
8 12
11 3
5 3
4 12
5 4
9 11
7 5
8 5
6 5
0 2
1 4
5 0
11 2