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