The Nineteenth Byte

@UnrelatedString oh yeah i may as well mention that when i did watch league youtubers i managed to get into a few seconds of one of their videos and i'm still proud of it because i was playing better in that one clip than i have in the last year combined

A username

in Vyxal, 12 secs ago, by Vyxal Bot

@Ausername I am doing you.

hyper-neutrino

@Ausername 10 bytes: Try it Online!

8 using j

can probably be shortened by someone who actually knows vyxal

Razetime

@Ausername would be worth adding to vyxapedia

A username

Not really, it just spaces it

hyper-neutrino

it doesn't even pad the right side like aplgolf's explainer does

A username

4:16 AM

9 if generators worked (they don't)

hyper-neutrino

i am working on a better editor program/website

Razetime

oh well

A username

@hyper-neutrino Wait mine does that

hyper-neutrino

oh

well that explains why it's longer lol

Unrelated String

@Ausername i'd also add that this doesn't account for when your explanation isn't in the same order as your code

A username

4:16 AM

hyper-neutrino

never mind i can't be bothered to golf yours then, or it may just be optimal

Razetime

then it is worth having

A username

@UnrelatedString Ik, but it's easy to fiddle

hyper-neutrino

yeah i forgot to check that and now cba to fix mine lmao

A username

@hyper-neutrino 12 bytes based on yours

hyper-neutrino

4:25 AM

ah nice

lyxal

@Ausername 11 bytes because I'm a gamer

A username

That doesn't endpad

In action

Still on HNQ, 3 days later

hyper-neutrino

ha, I am a better vyxaler than lyxal confirmed since i had 10 for that (non-working) version <o/

@Ausername want me to change that? /s

A username

!!!11111!11!! mod abuse

Lol this answer (10k+)

Redwolf Programs

Nah, being paid $2m and given a free house seems totally legit

Unrelated String

4:34 AM

totally

A username

totally

Unrelated String

can't believe they'd tell us about illuminatikingdom56

A username

4:52 AM

Ugh

Adám....

How did this get so many stars???

lyxal

← 1 message moved from Vyxal

Unrelated String

5:37 AM

@UnrelatedString said friend just thought of a challenge he could post here while working on some kind of anime crossword and i am completely forgetting whether or not we've gotten the rep requirement for posting to sandbox removed yet

A username

i thonk so

Unrelated String

good

if not i guess i could sandbox it on his behalf or something lol

A username

Ok wow. I have been busy.

I guess right now 'month' and 'quarter' are the same...

hyper-neutrino

well, yes

quarters start on january, april, july, and october

A username

ye

pxeger

6:15 AM

CMC: Find the code-golf kolmogorov-complexity challenge whose constant output is the shortest (in bytes)

A username

Buffalo?

Oh wait no 12missafew99100

pxeger

hmm that's restricted-source though

A username

@pxeger Oh

Buffalo probably then

Wait no

Hello world

How could I be so dumb

pxeger

the problem there is that Hello World requires STDOUT

I need to return from a function

A username

Oh

Buffalo buffalo buffalo, altthough the grid is simpler

pxeger

6:23 AM

I'm gonna go with "output programming language name"

A username

Link?

pxeger

it's restricted source but case insensitivity makes it moot

> You can only perform 30 searches within a 60 second window, please wait a moment and try again.

dammit!

45

Q: Output programming language name

Challenge: In the programming language of your choice, take no input and output your programming language's name. Fair enough, right? Restrictions: You can't use any character that is included in your programming language's name in your code. E.g., if I use Batch, I must not use the chars 'B...

pxeger

7:01 AM

new Cops post lol

A username

7:20 AM

No clue

rak1507

@pxeger ATO jumps around a lot when I type in the input box

oh it's only if I'm scrolled down

A username

Oh you're actually trying to do It Almost Works lol

Razetime

7:35 AM

pro reddit tip: you can use <subreddit>.reddit.com instead of reddit.com/r/<subreddit>

lyxal

Just like you can use <language>.tryitonline.net

rak1507

@pxeger fine if there's output to stderr?

lyxal

@pxeger ato isn't very yes on mobile when you're typing in the code box

A username

unyes

rak1507

ato.pxeger.com/… @pxeger this valid?

A username

7:41 AM

@rak1507 Nice find!

I was trying to do that for ages...

rak1507

well it's pretty cheaty

so idk if it's valid or not

A username

It does what it says - just say you've cracked it. pxeger even specified CPython...

lyxal

@pxeger youtu.be/hmKkLbPXQ20

Wow the quality on that is actually bad. Well done screen recorder

rak1507

I'll wait for pxeger to confirm before posting it as an answer

pxeger

8:12 AM

@rak1507 yes, but that is completely unintended. I knew it was possible, but I thought noone would be insane enough to get it to work before they found my actual solution

@lyxal hmm I have absolutely no idea why that happens. What browser is that?

It might be because I'm updating the url with every keystroke, but I don't know how I would get it to not scroll up to the top in that case

lyxal

@pxeger duckduckgi

*duckduckgo

pxeger

it's ok I figured out how to fix it

I'll push it to staging shortly

lyxal

Oh that's good

Wheat Wizard

8:29 AM

CMC: In as few keystrokes as possible write every combination of two letters on it's own line in vim. e.g. AA\nAB\bAC\n ... ZY\nZZ

Also this is less of a CMC and more of an "I have to do this" sort of thing.

pxeger

:!zsh -c 'echo {A..Z}{A..Z}'|xclip -se c<CR>"+p:%s/ //g<CR>

(cheating)

Wheat Wizard

I think a vanilla vim answer might beat that though.

pxeger

well not for me because I'm already in zsh not in vim and I have aliases to do all these things lol

Razetime

@WheatWizard have you already solved it?

Wheat Wizard

Yeah 702 keystrokes.

Razetime

8:41 AM

i suppose we can start with :h<_↵jjYZZPP

A username

9:08 AM

@WheatWizard Copy+paste from here - Ctrl+C Ctrl+V!

caird coinheringaahing

9:39 AM

@RedwolfPrograms Got to go with the OG, CaptainSparklez :P

rak1507

@pxeger lol

pxeger

@rak1507 it was easier than I expected to use DMA

rak1507

what's DMA?

pxeger

@lyxal Can you check if this is fixed on staging.ato.pxeger.com?

@rak1507 Direct Memory Access

rak1507

ah

A username

9:45 AM

@hyper-neutrino Or you could design a codepage with only zalgoes

caird coinheringaahing

@Ausername Calm down Satan :P

N3buchadnezzar

xclip is love, xclip is life

rak1507

@pxeger what was the intended solution? been experimenting with it for a bit, can't return, can't use yield, can't redefine f...

ah you said you'd reveal it in a week

pxeger

10:05 AM

@rak1507 hint: it starts with import sys

Neil

@PyGamer0 strictly speaking that's not a program, since ⬤ has two required parameters

rak1507

what are the exact rules, f has to return ["hah"]?

presumably print('hah');exit() doesn't count

pxeger

@rak1507 f has to return a function that returns ["hah"]

I'd focus less on why it returns a function, and more on why it returns it in a singleton list

rak1507

hmm interesting

A username

10:52 AM

'night

lyxal

11:11 AM

@pxeger it's perfect

Works good

It's yes

Very cool

pxeger

11:51 AM

great

why Next.JS defaults to that behaviour I have no clue

lyxal

12:34 PM

@cairdcoinheringaahing and you felt that the most efficient way to reply to my next message was to get hyper to mod abuse your message, even though it didn't ping me at all, consequently ruining the whole effect. smh.

I only noticed because I saw the other messages

sauce

N3buchadnezzar

Why is spice girls so fantastic music to work with?

Wait, dont star that >.<

4

lyxal

@N3buchadnezzar same reason undertale music makes code flow

caird coinheringaahing

@lyxal what else is 11 for, if not making a shitty joke? :P

New Posts

1:01 PM

0

Q: Blinking Lighthouses – Founder's Day Upgrade

To celebrate the island's next Founder's Day, colored filters (fuchsia, chartreuse, and aquamarine*) have been installed in every lighthouse. All lighthouses begin operation with their fuchsia filter, and they are all on the same color cycle: FCA, FCA, ... Each lighthouse changes its color filte...

code-golf string array-manipulation arithmetic

user

Why is Lyxal in every single room?

caird coinheringaahing

@user lyxal's in 13 rooms rn, compared to a lot of users that's nothing :P

I used to have 20+ rooms in my favourites, but a lot of them got frozen

user

The more weird thing is that they're the only person there

N3buchadnezzar

1:50 PM

Pssst, it is dangerous to golf alone. Take this golfing music youtube.com/watch?v=DMoCM_FgLP8

user

@Shaggy If your offer for the +500 bounty for the Peter Noble thing still stands, I'd like it on my Japt robbers' answer if it's valid :)

(I'd suggest giving the other 500 to caird, and they found it first anyway)

I once road an elevator with the real Asimov during an SF convention. He wrote a book between floors 5 and 10. — Barmar yesterday

caird coinheringaahing

@user Plot twist: his room was on floor 7 :P

user

Hmm, I guess Barmar didn't explicitly say it was during the elevator ride :P

Love the output of this: silicon-valley.fandom.com/wiki/Pied_Piper_(algorithm)

caird coinheringaahing

2:05 PM

#include
#include

typedef unsigned long u64;

/* Start here */
typedef void enc_cfg_t;
typedef int enc_cfg2_t;
typedef __int128_t dcf_t;

enc_cfg_t _ctx_iface(dcf_t s, enc_cfg2_t i){
	int c = (((s & ((dcf_t)0x1FULL > i * 5) + 65);
	printf("%c", c); }
	enc_cfg2_t main() {
	for (int i=0; i0; c >>= 1)
	{
		d += c & 1;
	}*/
	// O(m) lol no thanks

	//1000 wrap into loop
	c = c - ((c >> 1) & ~0UL/3);
	c = (c & ~0UL/5) + ((c >> 2) & ~0UL/5);
	c = (c & 0UL/0x21) + ((c >> 4) & 0UL/0x11);
	c = (c & ~0UL/0x101) + ((c >> 8) & ~0UL/0x101);

That's the actual code, I hate it

user

That looks even uglier than normal C lol

Probably turned up the ugliness factor for viewers to be like "Wow, much compression"

N3buchadnezzar

Oh wow the code uses bitshifts must be super hackor

user

She could also be a code golfer :P — user 7 secs ago

caird coinheringaahing

> 0x1FULL

Isn't that just 31 but as an unsigned long long?

user

Don't want 0x1SMOL do we?

@user caird, it's your chance to shine and advertise Jelly here :P

hyper-neutrino

2:20 PM

@cairdcoinheringaahing oh yeah happy birthday lol

actually should've waited for tomorrow to say happy (chartz) belated(ly) birthday

user

Happy birthday!

AMDG

2:40 PM

> enc_cfg2_t main() {

_What_

Shoot, I can't do formatting

rak1507

@cairdcoinheringaahing happy birthday!

N3buchadnezzar

@cairdcoinheringaahing Happy bday!

hyper-neutrino

chat mini sandbox: CnR challenge to output "Happy Birthday, caird coinheringaahing!" and when exactly one character is moved, instead output "Happy Birthday, ChartZ Belatedly!" ?

seems potentially a bit too specific for a CnR tho; also it's brute-forceable in quadratic time to the length of the solution but that doesn't matter much

PyGamer0

@cairdcoinheringaahing happy bday 🎂

hyper-neutrino

2:55 PM

okay I don't think we need to ping them that many times

N3buchadnezzar

@hyper-neutrino Wecan instead ping you =D

AMDG

@hyper-neutrino Hm, I'm not quite sure. I think we need at least one more pings before it's too many.

N3buchadnezzar

Uhm, I am having problems installing Jelly locally >.< Following the steps on the wiki just install Jelly as a python module. Not able to run it from the command line, but import jelly works

user

Ask about it on Stack Overflow :P

pxeger

python -m jelly doesn't work?

Redwolf Programs

2:59 PM

Morning!

Oh, is it caird's birthday?

user

Don't ping @caird :P

N3buchadnezzar

@pxeger Ahhh, I forgot the -m!!

AMDG

Hm, considering that C chat seems to be dead on SO chat, is this probably a good place to ask C questions or questions in general for programming?

Redwolf Programs

@user No worries, no pinging of @cairdcoinheringaahing here

@AMDG You'd probably get an answer quickly, but I'd discourage doing that super often since it's not really what the room's for

AMDG

Hrm. Code Golf is actually quite interesting to me. If I understand correctly, it's seeing what the smallest implementation of a particular algorithm is?

Redwolf Programs

3:03 PM

Yep!

AMDG

So uh... I guess codegolf=resource efficiency didn't win?

:P

hyper-neutrino

we are 100% fine with solutions taking until the heat death of the universe to run on N=3 so

Redwolf Programs

We do have some fastest code challenges, actually :p

hyper-neutrino

no, resource efficiency is not usually priority :P but yes, ^

AMDG

Well apart from the recreational aspect... what's the point of having the smallest text/binary implementation of an algorithm if it isn't fast or practical?

PyGamer0

3:05 PM

@hyper-neutrino umm while 1:0

Redwolf Programs

@AMDG Code length is obviously way more important than any of that stuff :p

AMDG

Well, put another way... I'm asking if I can ask optimization problems in here.

And whether or not it is off-topic for codegolf

user

Of course!

hyper-neutrino

you can; we are called code golf and coding challenges because we have more categories than just golf :P

AMDG

Noice.

user

3:06 PM

There's optimization

hyper-neutrino

you are looking for either fastest-algorithm for optimizing asymptotic complexity, fastest-code for optimizing runtime speed, or optimization for problems about optimizing some output (but that isn't a scoring criteria, so you'll need to add something like code-golf or one of the aforementioned ones (among others) to it)

Redwolf Programs

If you post anything on the main site though, I'd definitely use the sandbox since there are a few rules and best practices for non-code-golf challenges that might not be immediately obvious

PyGamer0

who has tried quick draw?

AMDG

Hm, do you think my question about optimized integer division could then be moved from SO to codegolf under the optimization category? It was closed as unclear, but I thought "What is an efficient algorithm or implementation for computing reciprocals of 64-bit integers?" was clear enough.

PyGamer0

CMC: "Hi, " + input + "!"

AMDG

3:09 PM

-2

Q: What is an efficient algorithm or implementation for computing reciprocals of 64-bit integers?

For my circumstances as well as for general worst case, I would like to have an integer division algorithm that is on par with integer multiply, and an integer reciprocal algorithm seems to be a good candidate. An algorithm that employs valid results for unsigned integers of at least 64 bits is p...

c algorithm assembly bit-manipulation integer-division

Redwolf Programs

@AMDG If you post it here, you'll need to either format it as a challenge, or make it a tips question.

hyper-neutrino

@PyGamer0 lol, all six of my drawings failed

bruh my mountain is literally the most mountain-like of all of these: i.stack.imgur.com/rUo45.png

Redwolf Programs

It got all of mine in under 10s lol

rak1507

@AMDG fun!

AMDG

I actually found something that I'm working on now after I realized that this is the same problem category as the problem we all did in school where we took coins from a particular currency and figured out how to compute a particular value with the optimal number of each kind of coin. (Does anyone know the name of that category, by the way? Explaining this every time is rather cumbersome.)

rak1507

3:13 PM

change making problem

AMDG

Is that really what it's called? Ok, but what is the name of its generalization to any discrete set of numbers?

Redwolf Programs

It still has that name I think

AMDG

:L

rak1507

knapsack problem

AMDG

Well, that's honestly kind of disappointing and amusing at the same time to me.

Redwolf Programs

3:14 PM

PyGamer0

@hyper-neutrino yes its like taht. the net can correctly regonized random lines made by my brother.

AMDG

Imagine that in the title of a formal research paper lol

hyper-neutrino

(i think the bot is just stupid) i.stack.imgur.com/XQXub.png

my drawings are consistently far better than what it's recognizing, lmao

Redwolf Programs

What is that top left one lol

Introducing the new Binary Keyboard!!!

hyper-neutrino

i wouldn't even recognize that as a keyboard

it's the SO copy-paste keyboard kekw

(how are half of these recognized) i.stack.imgur.com/t5Avj.png

PyGamer0

3:16 PM

a skateboard?

Razetime

@AMDG it's definitely in a few

pxeger

@hyper-neutrino it recognised this as a shark: i.stack.imgur.com/FEKNt.png

AMDG

Heh

PyGamer0

@hyper-neutrino its not a bot; its the next generation ai thats gonna take over the world

hyper-neutrino

@pxeger what the fuck

lmao

pxeger

3:18 PM

my artistic genius knows no bounds

Redwolf Programs

> Draw Animal Migration in under 20s

hyper-neutrino

i think my drawings have too many lines and aren't abstract enough

rak1507

wizard hats are now sharks

hyper-neutrino

lemme try again

AMDG

Wow. So I've been discussing this on math SE chat, and I mentioned, "I feel like this is an NP-complete problem; that must be why this is taking so long." Sure enough...
> The decision problem form of the knapsack problem (Can a value of at least V be achieved without exceeding the weight W?) is NP-complete. https://en.wikipedia.org/wiki/Knapsack_problem#Computational_complexity

hyper-neutrino

3:19 PM

aww, it didn't work i.stack.imgur.com/7K2Gh.png

AMDG

Which raises the interesting question of why the inverse of simple functions like multiplication and integer exponents of discrete quantities have inverses that are significantly more costly to compute.

N3buchadnezzar

@hyper-neutrino ?

Redwolf Programs

Why am I getting so many hard ones >:|

Stereo, animal migration, string bean, ...

pxeger

that's what she said

Redwolf Programs

...

hyper-neutrino

3:20 PM

ಠ_ಠ

pxeger

(sorry)

Redwolf Programs

@pxeger Wait...she?

I think that one'd be more "that's what he said" lol

pxeger

@RedwolfPrograms urbandictionary.com/define.php?term=thats%20what%20she%20said

Redwolf Programs

Yeah I know what it means

caird coinheringaahing

@user Y'all had to wait for the one time I've been away from that room to ping me 15 times :P

Thanks y'all tho :D

N3buchadnezzar

3:25 PM

@cairdcoinheringaahing Can we has cake nao?

caird coinheringaahing

@N3buchadnezzar Go ahead :P

@hyper-neutrino Surprisingly hard in Jelly

Redwolf Programs

The problem with this neural net is that it learns to associate people's garbage drawings with something, then it'll continue to be reinforced by people making more garbage drawings :p

N3buchadnezzar

I dont see a problem there

caird coinheringaahing

@hyper-neutrino Because “ ½ċṭ6Ỵ» decompresses to ' ChartZ Belatedly', you'd have to do some annoying space trimming instead of just joining on spaces

Redwolf Programs

Well it doesn't recognize my perfectly cromulent truck because a bunch of people are drawing bad ones :p

Although I am partially responsible for the bad drawings:

pxeger

3:31 PM

@RedwolfPrograms you should have embiggened the truck so it could recognise it better

hyper-neutrino

@cairdcoinheringaahing “6Ġ§çqØ», “½ċṭ6 Ỵ»t⁶¤j⁶”!

caird coinheringaahing

21 bytes

hyper-neutrino

ah

caird coinheringaahing

And why did you use j⁶ :P

hyper-neutrino

don't ask

i am not smart

caird coinheringaahing

3:36 PM

> "Draw toothbrush in under 20 seconds"
> *draws a line* "Oh, it's a toothbrush"
> "Draw a dragon in under 20 seconds"
> "Wtf are you doing?"

Redwolf Programs

It's not good with animals

N3buchadnezzar

python -m jelly eun '%Ȧ¬ɗ€ḋR{ 1000 [3,5]'

This wont work =(

caird coinheringaahing

@RedwolfPrograms why does the squirrel have a walkie-talkie?

Redwolf Programs

It's a nut >:|

N3buchadnezzar

@RedwolfPrograms Thats totally nut a not

hyper-neutrino

3:39 PM

4

no flags right now but I'm stalking one of the math rooms right now as usual and holy shit

Redwolf Programs

Okay you got me, my squirrel works for the NSA

N3buchadnezzar

@hyper-neutrino Is it stereotypical to say I am not surprised?

caird coinheringaahing

@hyper-neutrino I have just started ignoring math flags :/

N3buchadnezzar

I mean I have a degree in maths,I think I can be biased :p

hyper-neutrino

@cairdcoinheringaahing i have done the opposite and started tracking math rooms for a day or sometimes even weeks after flags

I have the main math room starred now because I was tracking a recurrent troll lmao

caird coinheringaahing

3:40 PM

Whenever I ask people to tone it down and/or stop abusing flags, I get yelled at :/

N3buchadnezzar

Anyone know why Python wont run my jelly?

caird coinheringaahing

Are you on windows?

hyper-neutrino

-1 VTC as no MCVE

caird coinheringaahing

4 mins ago, by N3buchadnezzar

python -m jelly eun '%Ȧ¬ɗ€ḋR{ 1000 [3,5]'

Oh right

hyper-neutrino

oh

caird coinheringaahing

3:41 PM

Try python -m jelly eun '%Ȧ¬ɗ€ḋR{' 1000 [3,5]

N3buchadnezzar

Linux, it runs fine on TIO =)

caird coinheringaahing

The command line args should be actual command line args

N3buchadnezzar

@cairdcoinheringaahing Not working it complains about [3,5]

Should these also be strings?

caird coinheringaahing

Maybe, how about python -m jelly eun '%Ȧ¬ɗ€ḋR{' '1000' '[3,5]'?

hyper-neutrino

may as well just quote them to be safe

N3buchadnezzar

3:43 PM

Hey that works

caird coinheringaahing

I think [] is a weird thing in bash

N3buchadnezzar

Sometimes I found the documentation is a little lacking :P

Redwolf Programs

Oh yeah, it's probably bash being weird ^^

N3buchadnezzar

*zsh

Thanks

caird coinheringaahing

@N3buchadnezzar That's probably why just running jelly doesn't work, I think that's a bash thing only

@cairdcoinheringaahing I'm pretty sure that's just a picture of an octopus, my drawing is so accurate :P

N3buchadnezzar

3:45 PM

@cairdcoinheringaahing Octopuses have 8 legs

caird coinheringaahing

It cut me off :P

I drew 3 and it guessed it :P

Redwolf Programs

Is fastest code like code golf where it's per-language?

It seems like making it so only people who know C/Asm can be competitive is bad

user

@cairdcoinheringaahing Why'd you ping me?

@cairdcoinheringaahing What is this?

N3buchadnezzar

@user Octopus

user

@cairdcoinheringaahing Please answer the above questions

@N3buchadnezzar No I mean the thing where you're drawing it

N3buchadnezzar

3:50 PM

@user The internet

user

caird uses brians, not the intertubes

hyper-neutrino

58 mins ago, by hyper-neutrino

chat mini sandbox: CnR challenge to output "Happy Birthday, caird coinheringaahing!" and when exactly one character is moved, instead output "Happy Birthday, ChartZ Belatedly!" ?

caird coinheringaahing

@user quickdraw.withgoogle.com/#

Redwolf Programs

@hyper-neutrino Seems like it'd be way more fun as code golf

hyper-neutrino

that's something I was considering too

Redwolf Programs

3:52 PM

A CnR based on some simple transformation usually isn't much fun imo

user