5 10
0 0 0 0 0 2 2 2 2 2
0 1 1 1 0 2 1 1 1 2
0 1 2 1 0 2 1 0 1 2
0 1 1 1 0 2 1 1 1 2
0 0 0 0 0 2 2 2 2 2
