| Packing spheres into a cube (Jaroslaw Wroblewski) | Discuss about this problem |
| Find the smallest cube in which N disjoint spheres can be placed: For each R=1,2,3,...,N there is exactly one sphere of radius R. An entry is the sequence of coordinates of centers of spheres, ordered from R=1 to R=N. Put the consecutive spheres 1...N in the smallest possible cube | |