lsd_3

0 1
0 -> 1
1 -> 2
2 -> 3

1 1
0 -> 1
1 -> 1
2 -> 1

2 1
0 -> 1
1 -> 0
2 -> 4

3 0
0 -> 3
1 -> 3
2 -> 3

4 2
0 -> 4
1 -> 4
2 -> 4