FA-68384 / Toll and parking fee computation / Member archive

Tiered parking rate table: additional blocks are counted from time zero · case 04

Tiered parking rate table returns a wrong result when additional blocks are counted from time zero.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Input {minutes, tiers: [[upto minutes, cumulative price]] in any order, extra_per: [block minutes, cents], max}. A stay of 0 minutes is free. Tiers are applied in ascending upto order and a stay of exactly upto minutes belongs to that tier (price capped at max). Beyond the last tier each started block after its upto adds the block price; the whole fee is capped at max.

Why this case matters

Fee engines bill customers in integer cents; a wrong boundary, rounding stage or cap scope silently over- or under-charges.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fee oracle 1	`1550`	`1600`	Failed

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