30
2
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
0 2 [0]
1 2 [0]
0 3 [0]
2 3 [0]
2 4 [0]
3 4 [0]
2 5 [0]
4 5 [0]
3 6 [0]
4 6 [0]
2 7 [0]
5 7 [0]
5 8 [0]
7 8 [0]
4 9 [0]
6 9 [0]
4 10 [0]
5 10 [0]
6 11 [0]
9 11 [0]
2 12 [0]
7 12 [0]
6 13 [0]
11 13 [0]
2 14 [0]
7 14 [0]
4 15 [0]
5 15 [0]
6 16 [0]
13 16 [0]
5 17 [0]
15 17 [0]
13 18 [0]
16 18 [0]
9 19 [0]
11 19 [0]
7 20 [0]
14 20 [0]
2 21 [0]
5 21 [0]
2 22 [0]
21 22 [0]
13 23 [0]
16 23 [0]
7 24 [0]
14 24 [0]
11 25 [0]
13 25 [0]
5 26 [0]
15 26 [0]
2 27 [0]
21 27 [0]
7 28 [0]
20 28 [0]
7 29 [0]
20 29 [0]