input:

3
2 4
1 2
3 4
5 6
7 8
1 2
1
1
3 4
1 2 3
6 9 9
10 15 17
12 18 21

output:

2 1
1
3 1 2

result:

wrong answer 1st lines differ - expected: '1 2', found: '2 1'