Advent Of Code - Day 2 Here we go for day 2! These first couple of problems prepare you on how to deal with input mainly. Learn and get used to parsing lines, and get comfortable with data structures. Day 2 - Part 1 We continue the story of Santa and the submarine. This time, he has the task of trying to steer the thing. The task is straightforward. You get a couple of instructions and based on a value you increase or decrease a positions.