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.github/photos
.github/photos
2021
2021
aoc
aoc
.env
.env
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt

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Advent of Code

Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of Code!

General

Types of Files

  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in a tweet that he "asks people not to publish their inputs [...] to make it harder for someone to try to steal the whole website"

Years

AoC Setup Files

How to get the Session-Cookie (.env File)

  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file

About

My solutions for Advent of Code!

adventofcode.com

Topics

adventofcodeadventofcode2021aocaoc2021python

Resources

Readme
GPL-3.0 license
Activity

Stars

0 stars

Watchers

1 watching

Forks

0 forks
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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.github/photos
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aoc
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.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt
Repository files navigation
Advent of Code
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels
that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of
Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts
that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of
Code!
General
Types of Files
  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in
a tweet that he "asks people not to publish their
inputs [...] to make it harder for someone to try to steal the whole website"
Years
AoC Setup Files
How to get the Session-Cookie (.env File)
  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file
About
My solutions for Advent of Code!
adventofcode.com
Topics
adventofcodeadventofcode2021aocaoc2021python
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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NameName
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.github/photos
2021
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aoc
aoc
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.env
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt
Repository files navigation
Advent of Code
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels
that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of
Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts
that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of
Code!
General
Types of Files
  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in
a tweet that he "asks people not to publish their
inputs [...] to make it harder for someone to try to steal the whole website"
Years
AoC Setup Files
How to get the Session-Cookie (.env File)
  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file
About
My solutions for Advent of Code!
adventofcode.com
Topics
adventofcodeadventofcode2021aocaoc2021python
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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NameName
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.github/photos
.github/photos
2021
2021
aoc
aoc
.env
.env
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt
Repository files navigation
Advent of Code
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels
that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of
Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts
that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of
Code!
General
Types of Files
  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in
a tweet that he "asks people not to publish their
inputs [...] to make it harder for someone to try to steal the whole website"
Years
AoC Setup Files
How to get the Session-Cookie (.env File)
  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file
About
My solutions for Advent of Code!
adventofcode.com
Topics
adventofcodeadventofcode2021aocaoc2021python
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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123 Commits
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NameName
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.github/photos
.github/photos
2021
2021
aoc
aoc
.env
.env
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt
Repository files navigation
Advent of Code
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels
that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of
Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts
that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of
Code!
General
Types of Files
  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in
a tweet that he "asks people not to publish their
inputs [...] to make it harder for someone to try to steal the whole website"
Years
AoC Setup Files
How to get the Session-Cookie (.env File)
  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file
About
My solutions for Advent of Code!
adventofcode.com
Topics
adventofcodeadventofcode2021aocaoc2021python
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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NameName
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.github/photos
.github/photos
2021
2021
aoc
aoc
.env
.env
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt
Repository files navigation
Advent of Code
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels
that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of
Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts
that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of
Code!
General
Types of Files
  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in
a tweet that he "asks people not to publish their
inputs [...] to make it harder for someone to try to steal the whole website"
Years
AoC Setup Files
How to get the Session-Cookie (.env File)
  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file
About
My solutions for Advent of Code!
adventofcode.com
Topics
adventofcodeadventofcode2021aocaoc2021python
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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BranchesTags
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123 Commits
Folders and files
NameName
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.github/photos
.github/photos
2021
2021
aoc
aoc
.env
.env
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt
Repository files navigation
Advent of Code
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels
that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of
Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts
that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of
Code!
General
Types of Files
  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in
a tweet that he "asks people not to publish their
inputs [...] to make it harder for someone to try to steal the whole website"
Years
AoC Setup Files
How to get the Session-Cookie (.env File)
  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file
About
My solutions for Advent of Code!
adventofcode.com
Topics
adventofcodeadventofcode2021aocaoc2021python
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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.github/photos
.github/photos
2021
2021
aoc
aoc
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.env
.gitignore
.gitignore
LICENSE
LICENSE
README.md
README.md
requirements.txt
requirements.txt
Repository files navigation
Advent of Code
Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels
that can be solved in any programming language you like. Since 2015 Eric Wastle, the creator of
Advent of Code, publishes 25 Challenges from december the 1st to december the 25th. Every challenge has two parts
that work with the same input (given as a .txt file). In this repository you can see my solutions for Advent of
Code!
General
Types of Files
  • challenge.md: Given challenge converted to markdown (Part one and part two)
  • solution.py: Clean Solution of the Challenge
  • [input.txt: Input file, given on the adventofcode.com website]
    • I don't upload my input files anymore and deleted old ones because Eric, the creator of AoC, wrote in
a tweet that he "asks people not to publish their
inputs [...] to make it harder for someone to try to steal the whole website"
Years
AoC Setup Files
How to get the Session-Cookie (.env File)
  1. Login to adventofcode.com
  2. Go to any input page (for example Day 1 of 2016)
  3. Open your browser's developer console and navigate to the network tab
  4. Reload the page and look in the request headers for "cookie"
  5. Copy the cookie and paste it into the .env file
About
My solutions for Advent of Code!
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