data/connectivity/graph_structure/hard/graph1040.txt

26 27
16 15
5 11
0 16
5 18
7 2
21 9
0 2
5 17
12 9
7 14
15 23
4 5
0 3
16 14
1 0
3 5
6 2
10 24
25 10
21 8
11 13
0 24
20 5
0 19
20 8
18 1
22 15