50 7
10000 1 2 0 1 2 1 2 3 4 3 1 0 4 3 3 1 2 1 4 1 4 3 3 0 1 4 2 2 3 1 2 2 0 2 1 1 0 2 3 3 0 2 1 1 2 0 4 1 4