3  1
 6  2.5
12  2.5
 6  2.5
6
1 2 3 4 5 6
4 7 8 9 10 11 12 13 14 15 6 5
10 16 17 18 12 11
24 0
0 0
0 5
0 10
5 10
5 5
5 0
10 10
15 10
20 10
25 10
25 5
25 0
20 0
15 0
10 0
28 7
30 5
28 3
10 3
12.5 3
15 3
13.5 5
12 7
11 5