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:

10
15
6
3
3
2
15
5
12
13
12
5
2
3
8
7
3
13
9
8
12
0
3
0
11
8
2
0
9
1
11
9
9
13
6
4
11
4
10
11
3
7
3
4
10
7
0
13
9
10
1
1
9
7
4
11
12
17
10
2
2
10
6
7
0
4
11
2
11
9
5
7
12
12
0
7
9
15
6
8
9
10
1
13
13
3
1
0
5
5
12
4
14
13
10
11
15
0
5
6
15
4
10
0
13
1
10
2
5
7
6
0
11
13
10
8
3
2
12
20
9
5
4
15
11
2
8...

result:

wrong answer 1st lines differ - expected: '12', found: '10'