# Test case 1 for arbitrary arrangement. See https://cgal.geometryfactory.com/CGAL/Members/wiki/Visibility/TestCases
8
2 0
4 0
6 0
8 0
-10 10
10 10
10 -10
-10 -10
6
0 1
2 3
4 5
5 6
6 7
7 4
