input:

10000
6
5 19
7 12
10 10
4 14
1 12
5 11
7
3 5
1 10
12 15
2 13
8 11
5 20
11 14
18
6 17
6 9
6 20
2 7
1 11
16 19
2 5
1 14
5 8
14 19
4 7
11 19
11 13
2 9
3 12
12 13
19 19
13 16
11
11 13
1 2
14 17
15 16
12 17
15 17
6 7
8 11
12 19
3 8
10 19
18
6 9
16 18
13 15
14 15
9 13
2 8
12 18
8 16
16 18
3 18
1 12
4 13
1...

output:

6
7
17
11
18
11
8
15
15
3
4
5
9
16
14
18
16
12
8
16
15
15
11
15
11
12
4
13
13
3
5
14
9
3
17
8
8
13
7
17
4
11
17
17
6
13
14
12
15
10
6
6
11
7
12
12
17
3
13
16
14
13
7
6
6
11
13
11
3
5
3
4
10
6
3
7
18
12
13
4
9
8
14
18
10
11
10
8
4
18
16
8
16
10
14
17
13
11
6
15
14
18
10
5
8
8
9
15
8
13
14
14
13
16
16...

result:

wrong answer 3rd numbers differ - expected: '18', found: '17'