input:

4
2
1 2
2
2 2
7
1 1 1 2 2 2 2
3
1 2 3

output:

1 1
1 1
1 2
1
1 2
1 1
2 2
0
1 2 3 1 5 6 7
1 1
2 2
3 3
1 4
5 5
6 6
7 7
3
1 1 1
1 1
1 2
1 3
3

result:

wrong answer 2nd numbers differ - expected: '0', found: '1'