input:

100000
1 5
0
4 5
4 4 3 5
5 2
0 1 7 5 4
4 1
6 4 4 4
1 5
3
2 2
1 1
3 1
5 4 0
2 4
0 3
2 2
1 7
3 1
2 1 6
2 4
5 1
3 1
3 7 0
4 4
7 5 4 4
3 3
1 1 5
1 3
3
3 2
3 7 4
4 1
3 1 0 5
5 3
6 2 3 6 3
3 1
2 6 6
4 4
5 4 1 3
2 1
4 4
4 5
0 1 6 5
4 5
0 7 7 5
2 4
4 0
5 1
7 0 2 6 0
3 4
5 2 3
2 3
4 3
3 2
1 0 1
2 2
6 5
5 1
6...

output:

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

result:

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