10
1 1 1 1 1 1 1 1 1 1
0 30 17 11 24 25 24 17 16 22
0 0 21 23 26 24 27 19 11 32
0 0 0 24 18 23 31 36 28 19
0 0 0 0 19 18 33 25 20 28
0 0 0 0 0 15 37 27 17 16
0 0 0 0 0 0 27 23 29 24
0 0 0 0 0 0 0 27 31 24
0 0 0 0 0 0 0 0 14 18
0 0 0 0 0 0 0 0 0 24
0 0 0 0 0 0 0 0 0 0