Advent of Code 2021 Advent of Code 2021 solutions written in Rust. Name Solution Day 1: Sonar Sweep ✓ Day 2: Dive! ✓ Day 3: Binary Diagnostic ✓ Day 4: Giant Squid ✓ Day 5: Hydrothermal Venture ✓ Day 6: Lanternfish ✓ Day 7: The Treachery of Whales ✓ Day 8: Seven Segment Search ✓ Day 9: Smoke Basin ✓ Day 10: Syntax Scoring ✓ Day 11: Dumbo Octopus ✓ Day 12: Passage Pathing ✓ Day 13: Transparent Origami ✓ Day 14: Extended Polymerization ✓ Day 15: Chiton ✓ Day 16: Packet Decoder ✓ Day 17: Trick Shot ✓ Day 18: Snailfish ✓