42 51 1
2 1 0
2 1 1
3 2 2 2
4 2 8 3
5 2 4 4
6 2 5 5
7 2 6 6
8 2 0 1
9 2 8 8
10 2 9 30
11 2 10 24
12 2 11 11
13 2 30 12
14 2 13 13
15 2 14 14
16 2 15 15
17 2 16 16
18 2 24 17
19 2 18 18
20 2 19 19
21 2 17 20
22 2 21 21
23 2 11 22
24 2 32 23
25 2 24 24
26 2 25 25
27 2 26 26
28 2 27 27
29 2 28 28
30 2 29 29
31 2 21 19
32 2 7 31
33 2 32 32
34 2 33 33
35 2 34 0
36 2 0 35
37 2 17 36
38 2 37 40
39 2 10 38
40 2 39 39
41 2 40 40
25 2 4 9
37 2 29 31
28 2 1 13
23 2 2 19
12 2 25 41
8 2 24 36
14 2 16 33
10 2 33 9
24 2 26 26
5 2 41 19
49 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0