7
0 29 28 23 17 22 22 
29 0 13 12 16 11 11 
28 13 0 9 17 10 10 
23 12 9 0 14 7 7 
17 16 17 14 0 11 7 
22 11 10 7 11 0 4 
22 11 10 7 7 4 0