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