input:

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

output:

3
3 7 11
1
1
1
2
0
2
0
2
2
3 6
0
3
1
4
2
3 10
0
3
3
5 10 15
1
3
1
2
1
5
0
5
3
3 7 11
1
1
0
1
1
2
0
2
1
2
1
3
1
4
2
1 5
0
1
3
3 7 11
1
1
2
1 5
1
1
0
1
4
1 6 11 16
1
2
1
4
2
4 7
0
4
1
3
1
2
1
3
3
1 6 7
0
1
2
4 8
1
1
1
3
1
2
0
2
2
2 6
1
3
1
3
2
1 5
0
1
3
3 8 13
1
1
1
3
1
4
0
4
3
4 8 12
1
2
1
2
1
1
0
1
...

result:

wrong answer Integer 0 violates the range [1, 2] (test case 4)