Skip to content

Comment on Finnish Defence Forces' Cyber Challenge

Comments

Anyone get a solution to 7 that doesn't involve a whole lot of steps? I did it in 44 steps, with the same 4 step combo being repeated 10 times in a row to work down to 0.3 liters.

My breadth first search found that the shortest solution was 44 steps.

https://gist.github.com/deckar01/beb96fc0afc0715f01bb

Most buckets are shaped like a truncated cone, so with a steady eye one should be able to fill a bucket to exactly half (2.15 or 2.35 liters). However, in this puzzle, this little trick doesn't help and the shortest solution is indeed 44 steps.

How does being shaped like a cone frustum help?? Even if the bucket were a cylinder (so filling it to half height got you half the volume), that would be crazy difficult. With slanted sides, how could you possibly know how high to fill for half the volume? Did you bring a protractor? Sextant?

AboutSource Built by g1lg1l

Hackerly is an independent reader for Hacker News, built on the public HN API. Not affiliated with Y Combinator.