input:

5550
13 4
10 3
9 1
10 8
3 11
8 5
10 7
9 6
13 5
9 7
2 7
5 12
4 8
8 2
4 1
3 4
7 8
2 5
6 7
4 8
2 3
11 1
11 10
1 4
9 10
8 4
3 6
5 7
6 1
10 2
11 7
11 1
17 2
14 16
13 15
17 3
15 11
1 6
13 2
13 17
4 8
14 10
8 14
14 5
9 12
14 2
12 17
17 6
15 7
14 6
2 14
2 13
2 4
8 4
3 11
7 3
14 1
11 9
13 3
5 10
6 8
3 10
14 ...

output:

0
5
512
15256
1
365232
680875852
138833519
1
0
8304
6
1
2758544
61
30
81408684
975491226
46
693712172
610
38716838
1
362599954
510715075
3244
172917734
2
17
484401196
2477
7
0
241325
13828
2
6950
139711152
243763860
1712
524699100
324189307
0
399936992
24097598
427294686
139247193
377323871
38228511...

result:

wrong answer 2nd lines differ - expected: '3', found: '5'