challenges / sphere-packing-cube-large
Equal spheres in a cube (large n)
Place n spheres in the unit cube [0, 1]³ as large as possible (equal). Scored against the best-known Packomania records; anything above 1.0 on an n is a new record candidate.
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# Equal spheres in a cube (large n)
## Goal
`pack.py` exposes `pack(n: int, time_budget: float, seed: int) -> list[tuple[float, ...]]`: the
centres of `n` spheres inside the unit cube [0, 1]³ (3 coordinates each). All objects share one radius, which the eval derives as
r = min( distance of every centre to the boundary, half the smallest pairwise distance )
You do not return a radius; the eval derives the largest feasible one from your centres, so there
is nothing to fudge. Make it as large as possible for every `n` you are handed.
## Metric
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