input:

4446
21 23 21
21 20
19 10
6 11
9 21
18 9
14 1
18 11
14 2
19 15
17 11
6 2
19 17
3 16
1 7
5 11
17 4
10 20
13 16
13 3
13 8
9 11
12 13
12 18
12 3 13 4 10 11 6 1 14 9 15 21 8 19 18 5 16 17 7 20 2
24 28 24
19 15
2 11
20 18
19 17
8 6
3 10
21 18
22 6
21 10
14 6
14 7
5 19
2 23
5 10
1 11
12 20
13 16
24 3
10 9...

output:

14
19
8
4
9
2
18
13
12
20
17
14
4
6
13
11
7
14
17
12
11
0
5
0
15
13
3
0
12
4
17
19
12
13
12
8
15
7
17
12
11
15
4
6
12
15
0
17
19
16
1
1
15
11
6
14
18
21
13
3
2
12
9
13
0
5
18
3
11
15
11
15
13
15
0
15
12
21
12
15
19
13
1
18
14
4
3
0
8
13
13
11
22
16
15
18
21
0
7
14
16
5
15
0
14
5
14
2
10
13
12
0
17
1...

result:

wrong answer 1st lines differ - expected: '12', found: '14'