Advent Of Code 2025

My solutions for Advent Of Code 2025.

Usage

This project uses just. For some commands to work a session token needs to be provided in the AOC_SESSION environment variable. The easiest way to set it is to create the file .env with AOC_SESSION=your token inside in the root of this repository. The token can be received by reading the session cookie from the AOC website.

Download the puzzle input, create a file for the current day and open it in your $EDITOR:

just begin        # Prepare the current day
just day=09 begin # Prepare day 9

Run:

just        # Runs the current day
just day=09 # Runs day 9