input:

3
8 6 4
1 3
2 1
2 6
4 1
4 7
6 1
6 3
6 6
2 3
3 1
4 3
4 6
5 2
6 4
3 2 1
10 12
10 10
10 11
1 4
1 5
1 3 2
1 1
2 1
2 2
2 3

output:

2
2 3 5 6 
2
2 
0
2 3 

result:

wrong answer Participant states the answer to be 2 but is actually 4 (test case 1)