data/cycle/graph_structure/hard/graph1004.txt

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