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