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