FA-94569 / Exam timetabling constraints / Member archive

Same-duration exams sharing a room penalised · case 04

Two 60-minute exams in one room count as mixed durations.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Assignments [exam, room, period] and exam durations. For each room and period, the penalty is the number of distinct durations minus one. Return [total penalty, [room, period, distinct durations] for penalised room-periods in order].

Why this case matters

Mixed durations in one room disrupt invigilation; the penalty is defined over distinct durations.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: distinct durations 1	`[4, [["R1", 0, 2], ["R2", 2, 4]]]`	`[3, [["R1", 0, 2], ["R2", 2, 3]]]`	Failed

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