case 1 failed: expected -1
-1
2 got -1
-1
1
input:
9
1 2
2 3
3 4
4 5
2 6
1 7
2 8
1 9
3
6 5 8 1 3 4 7
8 8 4 9 2 3 6 5 1
3 6 7 9
exit status 1