4
0 0
1 0
1 1
0 1
0 -1
1 0 1
-1
0 1 -1

4
0 0
0 1
1 1
1 0
0 -1
-1 -1 1
-1
0 1 -1

4
0 0
1 0
1 1
0 1
0 -1
1 1 1
-1
1 1 -1

1.00000000 0.00000000
-1.00000000 -1.00000000
0.50000000 0.00000000