100 0.0
200 0.0
1000 10.0 2000 10.0
2000 10.0 3000 10.0 4000 0.0 5000 -10.0
3003 -10.0 600600 10.0
3 -20.0
10 -1.0 20 1.0
10 1.0 20 -1.0
1 1.0 10 -1.0 20 1.0
10 1.0 20 -1.0 30 -1.0
-1