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    1. Day 23: Amphipod

      Today's problem description: https://adventofcode.com/2021/day/23 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/23

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      6 votes
    2. Day 19: Beacon Scanner

      Today's problem description: https://adventofcode.com/2021/day/19 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/19

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      9 votes
    3. Day 24: Arithmetic Logic Unit

      Today's problem description: https://adventofcode.com/2021/day/24 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/24

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      6 votes
    4. Day 25: Sea Cucumber

      Today's problem description: https://adventofcode.com/2021/day/25 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/25

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      5 votes
    5. Day 22: Reactor Reboot

      Today's problem description: https://adventofcode.com/2021/day/22 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/22

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      6 votes
    6. Day 18: Snailfish

      Today's problem description: https://adventofcode.com/2021/day/18 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/18

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      9 votes
    7. Day 21: Dirac Dice

      Today's problem description: https://adventofcode.com/2021/day/21 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/21

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      6 votes
    8. Day 17: Trick Shot

      Today's problem description: https://adventofcode.com/2021/day/17 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/17

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      8 votes
    9. Day 20: Trench Map

      Today's problem description: https://adventofcode.com/2021/day/20 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/20

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      8 votes
    10. Day 15: Chiton

      Today's problem description: https://adventofcode.com/2021/day/15 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/15

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      12 votes
    11. Day 14: Extended Polymerization

      Today's problem description: https://adventofcode.com/2021/day/14 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/14

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      11 votes
    12. Day 13: Transparent Origami

      Today's problem description: https://adventofcode.com/2021/day/13 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/13

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      13 votes
    13. Day 12: Passage Pathing

      Today's problem description: https://adventofcode.com/2021/day/12 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/12

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      12 votes
    14. Day 16: Packet Decoder

      Today's problem description: https://adventofcode.com/2021/day/16 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/16

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      9 votes
    15. Day 5: Hydrothermal Venture

      Today's problem description: https://adventofcode.com/2021/day/5 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/5

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      16 votes
    16. Day 11: Dumbo Octopus

      Today's problem description: https://adventofcode.com/2021/day/11 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/11

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      13 votes
    17. Day 10: Syntax Scoring

      Today's problem description: https://adventofcode.com/2021/day/10 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/10

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      15 votes
    18. Day 9: Smoke Basin

      Today's problem description: https://adventofcode.com/2021/day/9 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/9

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      12 votes
    19. Day 8: Seven Segment Search

      Today's problem description: https://adventofcode.com/2021/day/8 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/8

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      11 votes
    20. Day 7: The Treachery of Whales

      Today's problem description: https://adventofcode.com/2021/day/7 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/7

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      14 votes
    21. Day 1: Sonar Sweep

      Today's problem description: https://adventofcode.com/2021/day/1 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/1

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      15 votes
    22. Day 4: Giant Squid

      Today's problem description: https://adventofcode.com/2021/day/4 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/4

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      13 votes
    23. Day 6: Lanternfish

      Today's problem description: https://adventofcode.com/2021/day/6 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/6

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      14 votes
    24. Day 2: Dive!

      Today's problem description: https://adventofcode.com/2021/day/2 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/2

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      16 votes
    25. Day 3: Binary Diagnostic

      Today's problem description: https://adventofcode.com/2021/day/3 Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it...

      Today's problem description: https://adventofcode.com/2021/day/3

      Please post your solutions in your own top-level comment. Here's a template you can copy-paste into your comment to format it nicely, with the code collapsed by default inside an expandable section with syntax highlighting (you can replace python with any of the "short names" listed in this page of supported languages):

      <details>
      <summary>Part 1</summary>
      
      ```python
      Your code here.
      ```
      
      </details>
      
      13 votes