Advent of Code 2025 - Day 11 - Reactor

[Flashky]

Part 2 could be done using the same code as part 1 with a few modifications:

• Use both start and end node as parameters.
• Add memoization

Then the call would be something like:

dfs("svr", "fft", memo_structure);
dfs("fft", "dac", memo_structure);
dfs("dac", "out", memo_structure);

Source:
https://www.reddit.com/r/adventofcode/comments/1pjrojm/comment/ntfo2vm/?share_id=82ZprKj1OEnobohhcZsIC&utm_content=2&utm_medium=android_app&utm_name=androidcss&utm_source=share&utm_term=14