Run id: 137488

------Input------

20
5 10
8 20
3 6
2 4
10 26
11 27
1 1
1 2
2 2
1 5
5 25
100 250
1000 3000
26 120
9 30
12 27
7 25
27 54
32 100
4 13

------Answer-----

2
2
1
1
3
3
1
1
1
1
1
21
167
1
2
3
1
7
6
1

------Your output-----

7
16
3
2
24
28
1
1
2
1
8
1921
200401
146
20
31
13
123
218
5