Partially in Rust, partially in C++
and YES, I KNOW, the solution in Rust have the input hardcoded into it. I am solving them using https://play.rust-lang.org/ which does not support input redirection/multiple files.
I am currently in the process of reordering the repository. Next solutions (from day7) should not use hardcoded input anymore.
I rewrote the previous solutions so that now they read their input fro stdin