Advent of Code 2025 - Day 9 - Movie Theater [C#]

It's that time of the year again! Advent of Code 2025 is upon us. I streamed the last few years and had a lot of fun. Like last year, I won't be able to keep any kind of schedule, so I'll stream when I can and probably won't be editing the videos; I hope you can understand 😊 https://adventofcode.com/ Playlist from 2020:    • Advent of Code 2020   Playlist from 2021:    • Advent of Code 2021   Playlist from 2022:    • Advent of Code 2022   Playlist from 2023:    • Advent of Code 2023   Playlist from 2024:    • Advent of Code 2024   Twitter:   / nkcss   Telegram: https://t.me/NicksTechdom Discord:   / discord   Gist with some helper code I wrote (as promised on stream): https://gist.github.com/NKCSS/ef9ea15... Timestamps after the stream Want to compete? Here's my leaderboard code (only 200 people can join): 740496-17c5682a Code repo: https://github.com/NKCSS/AoC-2025/