FA-94464 / Exam timetabling constraints / Member archive

Invigilator count floors the candidate ratio · case 04

Rooms with fewer candidates than the ratio get no invigilator.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

rooms [room, venue, candidates, has access-arrangement candidate]. A room with candidates needs ceil(candidates / ratio) invigilators plus one if it has an access arrangement; an empty room needs none. Each venue with any invigilators also needs one chief invigilator. Return [per room, per venue including chief, grand total].

Why this case matters

Invigilation staffing follows directly from the room plan of a timetable.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression: ratio ceiling 1	`[{"R0": 2, "R1": 1}, {"lab": 4}, 4]`	`[{"R0": 2, "R1": 2}, {"lab": 5}, 5]`	Failed

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