1,7,2,0,3,0,0
2,0,0,0,1,0,0
3,6,1,0,4,0,0
4,5,3,0,0,0,0
5,0,6,4,0,0,0
6,0,0,3,5,0,0
7,9,8,1,0,0,0
8,32,0,0,7,0,0
9,30,0,7,10,0,0
10,0,9,0,11,0,0
11,0,10,12,29,0,0
12,11,0,13,0,0,0
13,12,0,0,14,0,0
14,0,13,0,15,0,0
15,0,14,16,17,0,0
16,15,0,0,0,28,0
17,0,15,0,18,0,0
18,18,18,19,23,18,18
19,18,19,19,20,19,17
20,21,19,20,22,20,20
21,0,0,20,0,0,0
22,23,20,22,22,22,22
23,23,18,22,23,24,23
24,0,25,23,0,0,0
25,0,26,0,24,0,0
26,27,29,0,25,0,0
27,28,0,26,0,0,0
28,0,0,27,0,0,16
29,0,11,0,26,0,0
30,39,31,9,0,0,0
31,0,33,32,30,0,0
32,31,0,8,0,0,0
33,38,36,34,31,33,33
34,33,35,34,34,34,34
35,36,35,35,34,35,35
36,37,36,35,33,36,36
37,37,37,36,38,37,37
38,38,37,33,38,38,38
39,40,0,30,0,0,0
40,43,41,39,0,0,0
41,0,42,0,40,0,0
42,0,0,0,41,0,0
43,44,0,40,0,0,0
44,45,0,43,0,0,0
45,50,46,44,48,0,0
46,0,47,0,45,0,0
47,54,0,0,46,0,0
48,51,45,49,0,0,0
49,48,0,0,0,0,0
50,55,53,45,51,0,0
51,70,50,48,52,0,0
52,0,51,0,0,0,0
53,0,54,0,50,0,0
54,0,0,47,53,0,0
55,56,0,50,0,0,0
56,63,59,55,57,0,0
57,58,56,0,0,0,0
58,0,0,57,0,0,0
59,60,0,0,56,0,0
60,0,0,59,0,0,0
61,62,0,0,0,0,0
62,72,71,61,0,0,0
63,0,0,56,0,64,0
64,0,65,0,66,68,63
65,0,0,0,64,0,0
66,0,64,67,0,0,0
67,66,0,0,0,0,71
68,0,0,0,69,0,64
69,0,68,0,0,0,0
70,0,0,51,0,0,0
71,0,0,0,62,67,0
72,0,0,62,0,0,0