1 0
1 1 
0 1 
-1 1
-1 0
-1 -1 
0 -2     3
  4   5 6
 10 3 
 -7 0
9999999 -9999999
-2



    -3
5 -6
-7 2
0 -18
1 57
12 3
20 16
3 12
-3 -12
-3 12
12 -3
-12 -3

0 






0