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