FA-94839 / Exam timetabling constraints / Member archive

Relief cover calculated per room instead of pooled per period · case 04

Every long-exam room gets its own relief invigilator.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

rooms [room, venue, period, exam duration, candidates]. Rooms with candidates running exams longer than 120 minutes need relief cover; each venue-period needs ceil(qualifying rooms / per_relief) relief invigilators. Return [venue, period, qualifying rooms, relief invigilators] sorted by venue, period.

Why this case matters

Long exams need relief invigilators so room staff can take breaks; cover is pooled per venue and period.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: venue period pooling 1	`[["annex", "R1", 1, 1], ["annex", "R3", 1, 1]]`	`[["annex", 0, 1, 1], ["annex", 1, 1, 1]]`	Failed

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