10 8
0      0      2      0      5      6      3      0
5      1      9      0      0      2      3      2
0      0      0      1      0      0      0      0
1      1      1      0      2      2      2      1
5      3      2      0      0      2      5      5
2      2      1      0      1      1      0      0
3      2      5      0      1      2      0      4
3      0      7      1      3      5      2      4
0      2      6      1      0      5      2      1
4      0      2      0      3      2      1      0