4 18
2 5
2 2
1 0
3 0
-1 -2 5 -2
5 -2 5 6
5 6 -1 6
-1 6 -1 -2
0 4 2 4
2 4 4 4
0 -1 2 -1
2 -1 4 -1
1 3 2 3
2 3 3 3
1 1 2 1
2 1 3 1
0 -1 0 4
4 -1 4 4
2 -1 2 1
2 3 2 4
1 1 1 3
3 1 3 3