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