20
12
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1
1 1 1 1 1 2 3 3 3 3 3 3 2 1 1 1 1 1 1 1
1 1 1 1 1 2 3 3 3 3 3 3 2 1 1 1 1 1 1 1
1 1 1 1 1 2 3 3 3 3 3 3 2 1 1 1 1 1 1 1
1 1 1 1 1 2 3 3 3 3 3 3 2 1 1 1 1 1 1 1
1 1 1 1 1 2 3 3 3 3 3 3 2 1 1 1 1 1 1 1
1 1 1 1 1 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

