7
0 29 28 23 17 22 22 
29 0 15 12 16 11 11 
28 15 0 9 17 10 10 
23 12 9 0 12 5 5 
17 16 17 12 0 11 7 
22 11 10 5 11 0 4 
22 11 10 5 7 4 0