My first solution outputs points P and Q with coordinates more than 2000 on test

0 1000 0
1000 999 0
0 0 0
1 0 0

but passes jury tests.

Edited by author 03.05.2015 19:00

Edited by author 03.05.2015 19:08

Edited by author 03.05.2015 20:28

Also, one of my solutions fails on tests
-1 1 0
0 0 0
1 1 0
0 0 0

0 0 0
-1 1 0
1 0 0
2 1 0