3
6
-1 -1 -1 0
-1 0 0 1
0 1 1 1
1 1 1 0
1 0 0 -1
0 -1 -1 -1
0
5
-1 0 0 1
0 1 1 1
1 1 1 0
1 0 0 -1
0 -1 -1 -1
0
7
-2 -2 -2 -1
-1 -1 -1 0
0 0 1 1
0 0 1 1
0 0 1 1
1 1 2 2
1 2 2 2
2
1 0
2 0