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