9
-1 0 -1
-1 -1 -1
0 -1 -1
-1 0 0
-2 -2 -1
0 -1 0
-2 -2 1
-1 0 -3
1 -1 -3
7
0 1
1 2
6 3
3 4
4 5
5 6
7 8
0
65536
0 0 1
