Mercurial > repos > other > adventofcode2023
view day23.txt @ 33:676461cc3a70
Day 23 - track segments, not each space
This allows us to explore the branches once then do quicker calculations
for valid route lengths. But still requires exploring 1,262,816 routes
to find the longest!
| author | IBBoard <dev@ibboard.co.uk> |
|---|---|
| date | Thu, 04 Jan 2024 14:52:24 +0000 |
| parents | a1b748f2c416 |
| children |
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--- Day 23: A Long Walk --- You have a map made of blocked spaces (#), open spaces (.) and slopes (^, >, v, and <). You can't go back up slopes. What is the LONGEST route from the start (open space in the top row) to the end (open space in the bottom row).