Advent of Code 2021 My solutions to Advent of Code 2021 problems. Day Part One Part Two 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 ⭐️ ⭐️ 3 ⭐️ ⭐️ 2 ⭐️ ⭐️ 1 ⭐️ ⭐️