4
0 8 16 11 1 14 0 7 0 0 0 0 0 2 0 0 
3 13 0 0 0 0 0 0 0 0 9 8 0 0 11 0 
7 0 0 5 4 0 0 0 0 6 0 3 10 0 0 0 
0 0 10 1 5 0 12 9 0 13 0 0 6 8 3 0 
0 0 0 0 0 0 5 0 0 0 0 0 1 12 0 4 
0 4 0 8 10 12 14 0 6 16 7 0 0 9 0 0 
0 0 6 0 13 0 15 0 0 0 0 0 0 0 0 0 
0 0 0 0 7 0 0 0 0 3 0 0 0 0 0 0 
4 5 0 0 2 0 0 0 0 0 0 14 11 0 12 7 
0 15 11 16 9 8 0 0 4 0 0 0 0 5 6 0 
0 1 0 0 0 0 16 0 0 0 15 0 3 0 0 0 
12 0 8 10 0 0 0 5 0 9 3 6 0 0 16 15 
0 0 0 4 0 2 0 0 0 0 0 0 14 0 0 0 
10 0 0 0 0 1 8 12 0 0 6 0 0 0 15 3 
0 0 0 0 0 0 7 10 11 0 2 5 0 0 9 0 
15 0 0 0 14 0 0 0 13 0 8 10 7 0 0 2 
