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