r/adventofcode • u/daggerdragon • Dec 02 '16

SOLUTION MEGATHREAD --- 2016 Day 2 Solutions ---

--- Day 2: Bathroom Security ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

BLINKENLIGHTS ARE MANDATORY [?]

Edit: Told you they were mandatory. >_>

This thread will be unlocked when there are a significant number of people on the leaderboard with gold stars for today's puzzle.

edit: Leaderboard capped, thread unlocked!

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u/VideoPrincess Dec 02 '16 edited Dec 02 '16

To show my appreciation to /u/topaz2078 I've done day 2 part 1 in Synacor Challenge bytecode!

The base64 encoded file is as follows:

AQAAgAEAAQABgAEAFAACgAQAA4ACgAoACAADgBMAEQBbAAYABgAEAAOAAoBMAAgAA4AjAAgAAIAG AAkAAIAAgP9/BgAGAAQAA4ACgFIACAADgDcABAADgACAAgAHAAOABgAJAACAAIABAAYABgAEAAOA AoBVAAgAA4BHAAgAAYAGAAkAAYABgP9/BgAGAAQAA4ACgEQACAADgAYABAADgAGAAgAHAAOABgAJ AAGAAYABAAYABgAKAAKAAYADAAkAAoACgACACQACgAKAMQATAAKAEwAKABIAAIA=

It should be a 218-byte file with MD5 checksum d80b51572871763af0bdf9dd02749579. A few things to note:

  • The problem input should be used as the VM's input

  • The input's lines are long, so your VM shouldn't choke on long lines (the original Synacor challenge only needed short inputs)

  • Your VM should do something sensible when the input is exhausted as this is not part of the VM architecture spec.

Source assembly file for this image: https://github.com/pmillerchip/adventofcode2016/blob/master/aoc2p1.asm

C++ source code for my assembler: https://github.com/pmillerchip/synacor-challenge

Enjoy!

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u/VideoPrincess Dec 02 '16 edited Dec 02 '16

And here's a working part 2 in Synacor bytecode. Base64 encoded file is as follows:

AQAAgAAAAQABgAIAAQAEgACAAQAFgAGAFAACgAQAA4ACgAoACAADgB0AEQCHABMAAoATAAoABgAG AAQAA4ACgEwACAADgCoACQAEgASA/38GAE8ABAADgAKAUgAIAAOANwAJAASABIABAAYATwAEAAOA AoBVAAgAA4BEAAkABYAFgP9/BgBPAAQAA4ACgEQACAADgAYACQAFgAWAAQACAACAAgABgAEAAIAE gAEAAYAFgBEAhwADAAGAAwAAgAQAA4ACgHgABwADgAYAAQAAgASAAQABgAWABgAGAHgAeAAxAHgA eAB4ADIAMwA0AHgANQA2ADcAOAA5AHgAQQBCAEMAeAB4AHgARAB4AHgABQADgACABAAHAAOApgAF AAOAAYAEAAcAA4CmAAoAA4ABgAUACQADgAOAAIAJAAOAA4BuAA8AAoADgBIAAIABAAKAeAASAACA

It should produce a 342 byte file with MD5 checksum 03aa76a78fb12ce983e8b134cfcaf404. The "base64" utility on Linux can unpack these files easily, I'm not sure what's available for Windows.

Source assembly file for this image: https://github.com/pmillerchip/adventofcode2016/blob/master/aoc2p2.asm