Day 14 of Advent of Code 2024 focuses on simulating robot movement and calculating the safety factor.The simulation involves parsing robot data, calculating new positions using a formula, and counting robots in each quadrant.In Part 2, the program detects the 'Christmas tree' pattern by tracking the time when robots cluster into a tight formation.The method works by shrinking a bounding box, calculating density, and identifying the time step with the highest density.