46
0 1
0.5 1
1 1
1.5 1
2 1
2.5 1
3 1
3.5 1
4 1
4.5 1
5 1
5.5 1
6 1
6.5 1
7 1
7.5 1
8 1
8.5 1
9 1
9.5 1
10 1
0 0
2.5 0
5 0
7.5 0
10 0
-0.5 -0.5
-1 -1
-1.5 -2
-0.5 1.5
-1 2
-1.5 3
10.5 -0.5
11 -1
11.5 -2
10.5 1.5
11 2
11.5 3
-1.5 2
-1.5 1
-1.5 0
-1.5 -1
11.5 2
11.5 1
11.5 0
11.5 -1