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Cubic tiers: heavy parcels cubic priced · case 02

Dense parcels over 20 lb get cubic pricing.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

dims inches, each rounded down to the quarter inch; weight lb. Eligible for cubic pricing when weight <= 20 and the longest rounded side <= 18. Cubic feet = product/1728, tier = tenths of a cubic foot rounded up (minimum 1); tiers above 5 are not cubic. Return ["CUBIC", tier] or ["WEIGHT", lb rounded up, minimum 1].

Why this case matters

Cubic pricing rates small dense parcels by volume tier instead of weight.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
weight over 20	`["CUBIC", 2]`	`["WEIGHT", 21]`	Failed

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