Advent of Code 2019 Day 1: The Tyranny of the Rocket Equation ⭐ ⭐ Day 2: 1202 Program Alarm ⭐ ⭐ Day 3: Crossed Wires ⭐ ⭐ Day 4: Secure Container ⭐ ⭐ Day 5: Sunny with a Chance of Asteroids ⭐ ⭐ Day 6: Universal Orbit Map ⭐ Day 8: Space Image Format ⭐ ⭐ Day 12: The N-Body Problem ⭐