9
1 0 0
0
1 -2 -1
-2
3 -1 -1
-1 1 -1
6 -3 -2
-1 -1 -1 -2 -1 -1
8 3 2
2 2 -1 -2 3 -1 2 2
9 6 3
1 2 3 1 2 3 1 2 3
13 7 3
0 -1 3 3 3 -2 1 2 2 3 -1 0 3
2 -2 -1
-2 -1
2 -2 -1
-1 -2