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