### Benq's blog

By Benq, history, 9 months ago,

Does anyone have a simple 3D Hull implementation? KACTL has this but it assumes that no four points are coplanar. (or in general, is it okay to shift each coordinate by a small value and work in doubles?)

On a related note, does anyone have a list of 3D hull problems? I know of these:

• +121

By Benq, history, 11 months ago,

Please check out this link instead of sending me messages like "how can i be a good programmer" or "how can I become legend in CP." Thanks!

• +303

By Benq, history, 16 months ago,

Does anyone have a $O(V^2)$ solution to this problem (available here)? The spoiler describes one but I don't understand what it means when it says to "search for this path backwards," and I can't find a model solution. (However, an $O(EV)$ solution with bitset did pass ...)

• +50

By Benq, 3 years ago,

This contest was held on October 22nd, but no solutions have been posted. Any ideas for FGH?

Problems