50 3
10000 10000 10000 4 0 1 3 3 4 0 3 2 1 4 2 2 2 1 4 2 4 2 1 3 1 0 1 2 3 2 2 0 3 0 3 4 4 0 1 0 3 0 0 3 1 0 0 1 0 0