data/cycle/graph_structure/hard/graph1028.txt

26 28
2 0
0 13
25 13
1 12
4 5
20 25
4 11
23 0
17 25
18 9
21 2
15 18
10 1
21 5
8 7
1 7
25 24
4 12
14 15
9 6
3 0
16 8
22 2
10 14
19 25
3 9
20 7
1 0