# No. of input polylines followed by polylines
2
5 0 0  20 0  30 20  40 0  60 0
6 10 10  25 10  30 20  40 0  50 0  50 -10
# No. of output polylines followed by polylines
5
3 0 0 20 0 25 10
2 10 10 25 10
2 50 0 50 -10
4 25 10 30 20 40 0 50 0
2 50 0 60 0
# No. of output points followed by points
6
0 0
10 10
25 10
50 -10
50 0
60 0
# No. of intersection points followed by points
1
50 0
# No. of output polylines with overlaps followed by polylines
6
3 0 0 20 0 25 10
2 10 10 25 10
2 50 0 50 -10
4 25 10 30 20 40 0 50 0
4 25 10 30 20 40 0 50 0
2 50 0 60 0
