+++ /dev/null
-<!DOCTYPE html>
-<html lang="en-us">
-<head>
-<meta charset="utf-8"/>
-<title>Day 1 - Advent of Code 2023</title>
-<link rel="stylesheet" type="text/css" href="/static/style.css?31"/>
-<link rel="stylesheet alternate" type="text/css" href="/static/highcontrast.css?1" title="High Contrast"/>
-<link rel="shortcut icon" href="/favicon.png"/>
-<script>window.addEventListener('click', function(e,s,r){if(e.target.nodeName==='CODE'&&e.detail===3){s=window.getSelection();s.removeAllRanges();r=document.createRange();r.selectNodeContents(e.target);s.addRange(r);}});</script>
-</head><!--
-
-
-
-
-Oh, hello! Funny seeing you here.
-
-I appreciate your enthusiasm, but you aren't going to find much down here.
-There certainly aren't clues to any of the puzzles. The best surprises don't
-even appear in the source until you unlock them for real.
-
-Please be careful with automated requests; I'm not a massive company, and I can
-only take so much traffic. Please be considerate so that everyone gets to play.
-
-If you're curious about how Advent of Code works, it's running on some custom
-Perl code. Other than a few integrations (auth, analytics, social media), I
-built the whole thing myself, including the design, animations, prose, and all
-of the puzzles.
-
-The puzzles are most of the work; preparing a new calendar and a new set of
-puzzles each year takes all of my free time for 4-5 months. A lot of effort
-went into building this thing - I hope you're enjoying playing it as much as I
-enjoyed making it for you!
-
-If you'd like to hang out, I'm @ericwastl@hachyderm.io on Mastodon and
-@ericwastl on Twitter.
-
-- Eric Wastl
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
--->
-<body>
-<header><div><h1 class="title-global"><a href="/">Advent of Code</a></h1><nav><ul><li><a href="/2023/about">[About]</a></li><li><a href="/2023/events">[Events]</a></li><li><a href="https://teespring.com/stores/advent-of-code" target="_blank">[Shop]</a></li><li><a href="/2023/settings">[Settings]</a></li><li><a href="/2023/auth/logout">[Log Out]</a></li></ul></nav><div class="user">Neil Smith <a href="/2023/support" class="supporter-badge" title="Advent of Code Supporter">(AoC++)</a> <span class="star-count">2*</span></div></div><div><h1 class="title-event"> <span class="title-event-wrap">0xffff&</span><a href="/2023">2023</a><span class="title-event-wrap"></span></h1><nav><ul><li><a href="/2023">[Calendar]</a></li><li><a href="/2023/support">[AoC++]</a></li><li><a href="/2023/sponsors">[Sponsors]</a></li><li><a href="/2023/leaderboard">[Leaderboard]</a></li><li><a href="/2023/stats">[Stats]</a></li></ul></nav></div></header>
-
-<div id="sidebar">
-<div id="sponsor"><div class="quiet">Our <a href="/2023/sponsors">sponsors</a> help make Advent of Code possible:</div><div class="sponsor"><a href="https://pantherainvestment.com/" target="_blank" onclick="if(ga)ga('send','event','sponsor','sidebar',this.href);" rel="noopener">Panthera Investment</a> - We solve Financial Markets. Do you want to join?</div></div>
-</div><!--/sidebar-->
-
-<main>
-<article class="day-desc"><h2>--- Day 1: Trebuchet?! ---</h2><p>Something is wrong with global snow production, and you've been selected to take a look. The Elves have even given you a map; on it, they've used stars to mark the top fifty locations that are likely to be having problems.</p>
-<p>You've been doing this long enough to know that to restore snow operations, you need to check all <em class="star">fifty stars</em> by December 25th.</p>
-<p>Collect stars by solving puzzles. Two puzzles will be made available on each day in the Advent calendar; the second puzzle is unlocked when you complete the first. Each puzzle grants <em class="star">one star</em>. Good luck!</p>
-<p>You try to ask why they can't just use a <a href="/2015/day/1">weather machine</a> ("not powerful enough") and where they're even sending you ("the sky") and why your map looks mostly blank ("you sure ask a lot of questions") <span title="My hope is that this abomination of a run-on sentence somehow conveys the chaos of being hastily loaded into a trebuchet.">and</span> hang on did you just say the sky ("of course, where do you think snow comes from") when you realize that the Elves are already loading you into a <a href="https://en.wikipedia.org/wiki/Trebuchet" target="_blank">trebuchet</a> ("please hold still, we need to strap you in").</p>
-<p>As they're making the final adjustments, they discover that their calibration document (your puzzle input) has been <em>amended</em> by a very young Elf who was apparently just excited to show off her art skills. Consequently, the Elves are having trouble reading the values on the document.</p>
-<p>The newly-improved calibration document consists of lines of text; each line originally contained a specific <em>calibration value</em> that the Elves now need to recover. On each line, the calibration value can be found by combining the <em>first digit</em> and the <em>last digit</em> (in that order) to form a single <em>two-digit number</em>.</p>
-<p>For example:</p>
-<pre><code>1abc2
-pqr3stu8vwx
-a1b2c3d4e5f
-treb7uchet
-</code></pre>
-<p>In this example, the calibration values of these four lines are <code>12</code>, <code>38</code>, <code>15</code>, and <code>77</code>. Adding these together produces <code><em>142</em></code>.</p>
-<p>Consider your entire calibration document. <em>What is the sum of all of the calibration values?</em></p>
-</article>
-<p>Your puzzle answer was <code>54968</code>.</p><article class="day-desc"><h2 id="part2">--- Part Two ---</h2><p>Your calculation isn't quite right. It looks like some of the digits are actually <em>spelled out with letters</em>: <code>one</code>, <code>two</code>, <code>three</code>, <code>four</code>, <code>five</code>, <code>six</code>, <code>seven</code>, <code>eight</code>, and <code>nine</code> <em>also</em> count as valid "digits".</p>
-<p>Equipped with this new information, you now need to find the real first and last digit on each line. For example:</p>
-<pre><code>two1nine
-eightwothree
-abcone2threexyz
-xtwone3four
-4nineeightseven2
-zoneight234
-7pqrstsixteen
-</code></pre>
-<p>In this example, the calibration values are <code>29</code>, <code>83</code>, <code>13</code>, <code>24</code>, <code>42</code>, <code>14</code>, and <code>76</code>. Adding these together produces <code><em>281</em></code>.</p>
-<p><em>What is the sum of all of the calibration values?</em></p>
-</article>
-<p>Your puzzle answer was <code>54094</code>.</p><p class="day-success">Both parts of this puzzle are complete! They provide two gold stars: **</p>
-<p>At this point, you should <a href="/2023">return to your Advent calendar</a> and try another puzzle.</p>
-<p>If you still want to see it, you can <a href="1/input" target="_blank">get your puzzle input</a>.</p>
-<p>You can also <span class="share">[Share<span class="share-content">on
- <a href="https://twitter.com/intent/tweet?text=I%27ve+completed+%22Trebuchet%3F%21%22+%2D+Day+1+%2D+Advent+of+Code+2023&url=https%3A%2F%2Fadventofcode%2Ecom%2F2023%2Fday%2F1&related=ericwastl&hashtags=AdventOfCode" target="_blank">Twitter</a>
- <a href="javascript:void(0);" onclick="var ms; try{ms=localStorage.getItem('mastodon.server')}finally{} if(typeof ms!=='string')ms=''; ms=prompt('Mastodon Server?',ms); if(typeof ms==='string' && ms.length){this.href='https://'+ms+'/share?text=I%27ve+completed+%22Trebuchet%3F%21%22+%2D+Day+1+%2D+Advent+of+Code+2023+%23AdventOfCode+https%3A%2F%2Fadventofcode%2Ecom%2F2023%2Fday%2F1';try{localStorage.setItem('mastodon.server',ms);}finally{}}else{return false;}" target="_blank">Mastodon</a
-></span>]</span> this puzzle.</p>
-</main>
-
-<!-- ga -->
-<script>
-(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
-(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
-m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
-ga('create', 'UA-69522494-1', 'auto');
-ga('set', 'anonymizeIp', true);
-ga('send', 'pageview');
-</script>
-<!-- /ga -->
-</body>
-</html>
\ No newline at end of file
projects / advent-of-code-23.git / blobdiff