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:

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

result:

wrong answer 4th lines differ - expected: '4', found: '5'