50
4 1 8 0 0 16 8 2 1 0 8 2 4 0 2 4 8 4 2 16 8 4 0 2 0 0 1 4 8 0 8 0 0 4 8 16 0 4 8 8 0 4 4 0 1 8 1 4 16 16