-1
5
4.000000000000 11.000000000000 8.000000000000
4.000000000000 5.000000000000 8.000000000000
-2.000000000000 8.000000000000 6.000000000000
10.000000000000 8.000000000000 6.000000000000
4.000000000000 8.000000000000 6.000000000000
-1