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