The incorrect test 12 was fixed (coordinates were exceeding 10000).

New tests were added to the problem. The tests target a wide range of problems in geometry algorithms, accuracy issues, and performance.

All solutions have been rejudged. 229 authors (40%) lost, and 2 other authors gained the Solved status for the problem.

Thanks for the New Year present (had to resolve the problem just before the 2026)   :)))