​PikoApr 14

@blinry and I are still trying to solve last year's #adventOfCode. We're stuck on day 10, and we're out of ideas – except using linear optimization algorithms, but that feels like overkill... Has anyone of you solved day 10 and has a tip for us – do we really need to implement linear optimization?
https://en.wikipedia.org/wiki/Linear_programming#Integer_unknowns

Please use a spoiler for your answers ^^'

#AOC25 #advent_of_code #adventofcode2025 #adventofcode2025day10

Linear programming - Wikipedia

Show threadTim Holyoake
@piko @blinry You can see my scruffy handwritten notes on an approach here https://z80.timholyoake.uk/advent-of-code-2025-in-fortran-77-mostly/ along with a link to my repository with my final version in it. It's written in fixed width Fortran, but uses recursion, so is a bit of a hybrid between legacy and modern Fortran! It should be relatively readable though as the final code includes comments.
Advent of Code 2025 in Fortran 77 (mostly) – retrocomputing ephemera

Apr 14 at 6:22pmWeb