7 1
-9 1
7 1
-5 1
7 1
-9 1
7 1
-5 1
3 1
4 1
1 1
-1 1
-2 1
-2 1
-3 1
0 1
7 1
-9 1
7 1
-5 1
7 1
-9 1
7 1
0 0.5
-1 1
1 1
-1 1
1 1
-1 1
