data/cycle/graph_structure/hard/graph1021.txt

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