It's so frustrating to not be able to know or google any concepts behind a problem, even though you are confident that there are.

• aoc2020

  10 22 0.0 Haskell

  Haskell Solutions to Advent of Code 2020 (by haskelling)

As for the CS algorithms and concepts required, indeed many of the part 2s are for sure only really doable with university-level training. Fortunately, though, there are many universities that put their lectures online. One is MIT, and I would highly recommend watching MIT 6.006 and 6.046, available free on the MIT OpenCourseWare YouTube channel. The lectures on dynamic programming are particularly pertinent for both 7b and 10b. In fact, the solutions I had for both boiled down to the same algorithm: summarising a DAG (directed acyclic graph) from the leaves up, so I was able to reuse my code and solve 10b really quickly.

• InfluxDB

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