case 1 failed: expected:
YES
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
3 1 6 4 1 4 4 5
got:
YES
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
3 3 6 4 1 8 4 5
input:
8
4 2 6 0 8 4 6 6
exit status 1