data/hamilton/graph_structure/hard/graph13.txt

11 24
7 1
6 5
8 7
9 1
5 10
5 8
7 3
0 7
7 5
4 3
8 3
1 4
1 6
9 5
3 1
7 6
2 3
5 0
0 4
9 3
5 3
4 10
10 7
10 3