14 4
5 -1 -1 1
0 0 0 1
2 -1 1 1
2 1 -1 1
0 1 0 0
-1 1 1 1
2 1 1 -1
5 1 -1 -1
0 0 1 0
5 -1 1 -1
3 0 0 -1
8 -1 -1 -1
3 0 -1 0
3 -1 0 0

