The Nineteenth Byte

Niko

00:00

new semantle pog

Unrelated String

pog

Bubbler

I can imagine a bruteforcer being shorter than hardcoding 60 numbers AND the formula after it

Niko

oh right i forget it is codegolf so speed don’t matter

Unrelated String

the formula's especially unwieldy with how many numbers have to be hardcoded to implement it to begin with

Aiden Chow

00:31

I solved Semantle #55 in 51 guesses. My first guess had a similarity of 17.17. My first word in the top 1000 was at guess #22. My penultimate guess had a similarity of 55.76 (995/1000). semantle.novalis.org

Niko

pogger

Aiden Chow

@att lol what how are you so good at this

lyxal

can't believe the uni libary has a book called "Competitive programming in Python: 128 algorithms to develop your coding skills" available online

obviously I downloaded all 22 pdfs that make up the book

Aiden Chow

@lyxal dang nice, im gonna take a look at that book too, sounds interesting

user

I just found out today that semantle isn’t blocked at school

Which is weird because iboss has a whitelist, not a blacklist

Unrelated String

00:35

based it department i guess

user

So someone must’ve whitelisted the entire domain

@UnrelatedString nah, outsourced to some company called iboss

On top of that, there’s go guardian to block more specific stuff

Any url with the word “unblocked” or “game” is blocked

lyxal

I've just found an article that's included a link to a stack exchange site. My life has come to the point where seeing a link to anything SE is enough to make me lose my sh*t and think "holy crap SE that's epic"

user

Got super restrictive this year, which makes the fact that wordle and semantle are unblocked so weird

Aiden Chow

guys what are some tips for usaco (if u know what that is), im doing pretty bad in it, only can pass bronze :\ do i need to memorize algorithms or what

user

@lyxal that’s pretty natural

Unrelated String

00:37

^

user

@AidenChow memorize algorithms

But also practice applying them

Unrelated String

honestly for how incredibly massive so is public awareness of se overall is surprisingly low

Aiden Chow

@user ah ok, should i be learning java or c++ or is python fine (i heard that python is slower than the other two languages??)

lyxal

@AidenChow I'd link it, but any link I have is behind a uni proxy wall

meaning any link from me is useless

att

@AidenChow yesterday's was easy

Aiden Chow

00:40

@lyxal oh, i thought it was a free ebook u found on the internet, didnt fully read ur msg lol

Bgil Midol

Wordle 278 3/6

🟨🟨⬜⬜⬜
🟩🟩⬜🟨🟨
🟩🟩🟩🟩🟩

Unrelated String

i'm not familiar with usaco but if they even support java i would recommend not java

hyper-neutrino

hm, i'm not sure what the USACO trend is these days

the canadian version is moving away from memorizeable algorithms or DSs or whatever and more towards problem solving / ad hoc stuff and making observations and applying them to fundamentals

IMO you shouldn't use java

it's neither fast to write (like Python) nor fast to run (like C++)

Unrelated String

it's just strictly outclassed by both alternatives

hyper-neutrino

worst of both worlds ¯\_(ツ)_/¯

Aiden Chow

00:41

@hyper-neutrino so should i be learning c++ instead

hyper-neutrino

probably

Unrelated String

yeah

user

@AidenChow there are looser time constraints on python

hyper-neutrino

python is very slow in comparison

but I use it for the earlier problems because it's easy to write

user

But don’t listen to me because I’ve never won anything lol

Aiden Chow

00:42

@user so should i stick to python, i fear that i may reach a roadblock if i keep with python

Unrelated String

you probably won't need to learn the stuff that makes c++ a dumpster fire to perform well enough, if it's small scale problem solving versus creating a large codebase

lyxal

petition them to allow languages like vyxal, jelly, husk and pyth

att

use C :)

hyper-neutrino

yeah I second what unrelated string says

Aiden Chow

@lyxal lmaoo, they would probably never allow that in all honesty

hyper-neutrino

00:43

a lot of the stuff that makes C++ hard you never need to care about

Unrelated String

they should support brachylog since idiomatic golfed solutions could never satisfy the performance constraints anyways :)

hyper-neutrino

lol

att

I solved Semantle #55 in 21 guesses. My first guess had a similarity of 8.05. My first word in the top 1000 was at guess #6. My penultimate guess had a similarity of 2.02. semantle.novalis.org

Aiden Chow

@UnrelatedString what kinds of c++ features should i avoid when learning it

Unrelated String

best part of c++ is if you really want to you can just write c
but if you don't want to just write c you do get the benefit of `std::string` etc.

Aiden Chow

00:44

@att wtfffffff

Unrelated String

@AidenChow you probably won't have any problems no matter how far you go learning it for usaco

Aiden Chow

@UnrelatedString ok, good to know

Unrelated String

@AidenChow i'm at 20 guesses with three in the top 1000 and i'm already struggling to think of where i can go from here

Aiden Chow

c++ is the language im least familiar with (i learned java just for ap cs a lol and ive been using python since forever but i still suck at it), is it similar to the other two languages

@UnrelatedString which 3??

att

similarish to java

Unrelated String

00:47

@AidenChow 619, 698, 916

att

I never actually bothered learning c++ much beyond the c parts

Unrelated String

mild spoiler

Aiden Chow

@UnrelatedString lol rip. yeah, thats kinda what i was thinking when i saw the words u had

how do u have 3 in the top 1000 within 20 guesses tho

Unrelated String

luck 😎

att

I got #993 on 9, maybe just lucky

Aiden Chow

00:50

my first top 1000 was literally 21 guesses in

hyper-neutrino

let's see if i can get ez luck again

Aiden Chow

@att oh daaaang

hyper-neutrino

damn my first guess was only 2.05 and not instantly top 1000 this time

Aiden Chow

@hyper-neutrino im kind of hoping not, so u can actually experience the pain this time around :P

Unrelated String

first with similarity above 20 was guess 7 spoiler

so went from there

hyper-neutrino

00:52

my second guess was >20

5th guess top 1k

Unrelated String

nice

ooh got 939

Aiden Chow

my first top 1000 was #837 tho, that was pretty helpful

hyper-neutrino

not as lucky with the follow-up after getting top 1k as yesterday though

Aiden Chow

@hyper-neutrino WHATTTTT

howwwwwww

att

@AidenChow it was just a matter of deciding which direction to take it

Aiden Chow

00:53

what is this, am i really that bad at this game

att

just call it unlucky

hyper-neutrino

this game seems a lot more luck based than wordle

Aiden Chow

today i actually thought i did pretty well with 51 guesses, nope, att just gets it in 20 guesses

:\

i didnt even get a top 1000 word in the amount of guesses att took to solve it, like wtf

att

my 3rd guess was lucky

Aiden Chow

do u guys start with random words, or do u go in with a strategy in mind already??

att

00:57

there were several ways to take it, one of which was guess 6 (#673)

random

Niko

i’ll test every direction in my mind before seeing a possible way

att

I do check parts of speech though

lyxal

In other news, here's a chunk of text from a PDF I'm reading:

you'd think it'd copy nicely

hyper-neutrino

after #5 i've gotten a worse guess for the following 9 lmao

lyxal

but no

“astep-by-stepandunambiguousspecificationprocedurethat,givenanyvalidinputdataofaparticularproblem,alwaysproducesthedesiredoutputdata,thus``solving’’theparticularinstanceoftheproblem.”

why must pdfs be so terrible like this

Niko

00:58

political, aircraft, nice, math and some adj

those are my starting word

Aiden Chow

@att oh yeah, thats a good idea

att

feels boring if I have some optimized early game

Unrelated String

^

Aiden Chow

i always just start off with top 1000 words from previous days lmao, i dont have any other ideas for words to put in

att

like with wordle I make an effort to use different starting words every day

Aiden Chow

01:00

yay!
Wordle 278 3/6

⬛⬛⬛🟨🟨
⬛⬛⬛🟨⬛
🟩🟩🟩🟩🟩

lyxal

@AidenChow I start with whatever meme song I'm listening to/thinking about at the time. And if I'm not doing memes, I use whatever my surroundings are

Unrelated String

@AidenChow whoa

@lyxal yeah same lmao

lyxal

@AidenChow i can do that too!

Wordle 279 3/6

🟨⬛⬛⬛🟨
⬛⬛🟨⬛🟩
🟩🟩🟩🟩🟩

Aiden Chow

ok i put mines in scordle, i think i got kinda lucky
Scoredle 278 3/6

12,972
⬜⬜⬜🟨🟨 292
⬜⬜⬜🟨⬜ 9
🟩🟩🟩🟩🟩

lyxal

oh wait different wordle lol

wait how are you still on #278?

tf kinda timezone you in?

Aiden Chow

01:02

@lyxal different time zone

@lyxal usa

Unrelated String

the real question is why would wordle be time zone sensitive

att

what is scoredle

Unrelated String

you're ahead of a
very large fraction of the world
down in nsw

Aiden Chow

@att scores how well u did on a certain wordle, the numbers mean, based on the hints u got and what words u guessed, how many possible words conform to those hints

Unrelated String

looking forward to seeing if i can think of anything better after a workout

o/

Aiden Chow

01:04

so in my case, after two guesses, there were only 9 words left that conform to the hints i got so far

Bubbler

@AidenChow So if I have remote access to the other side of the world, I can play two wordles in reverse order?

att

i see

lyxal

@UnrelatedString what a nerd actively staying fit smh

user

@Bubbler time traveller bubbler :p

@lyxal i thought nerds didnt stay fit

Because otherwise i can’t even identify as a nerd anymore

All I’ll have left is “loser,” “user,” and “boozer”

Unrelated String

02:17

@UnrelatedString i thought of one word and its similarity was 0.89

lowest i got before that was 1.76, which is surprising considering that word is spoiler

ooh 904

lyxal

02:41

@user well you are user

Niko

i have 954 but can’t find it

and a 940 now

also a 993 :/

Unrelated String

02:58

nice

my highest is still 939

and this might be the first time i've had multiple in the top 1000 that aren't top 900 lmao

allxy

The semantle was hard

Unrelated String

953

allxy

I'm quite surprised "treaty" isn't high on the list, although "war" and similar not being on the list is reasonable.

Unrelated String

i'm seeing spoiler

allxy

I guess, yeah. The answer isn't one of those though, it's spoiler.

Unrelated String

03:07

i'm not hovering that but what the fuck

okay then

this really is hard

New Posts

0

Q: Expand a matrix goo-ily

Input An \$m\$ by \$n\$ binary matrix, with \$m\$ and \$n\$ both at least 2. Think of the ones as gobs of melted cheese, which stretch as we expand the matrix horizontally and vertically. More precisely... Output A \$2m-1\$ by \$2n-1\$ binary matrix, constructed as follows... First insert rows of...

Unrelated String

03:27

943...

69

and 993

lyxal

03:46

Can't believe this is a real article

Unrelated String

04:17

994

it took me 74 guesses to get that after 993

Niko

i gave 6 900+ now

have*

att

oh my

guess it's not as easy as it was for me lmao

Niko

I solved Semantle #55 in 93 guesses. My first guess had a similarity of -0.73. My first word in the top 1000 was at guess #44. My penultimate guess had a similarity of 31.75 (837/1000). semantle.novalis.org

lol

Aiden Chow

lol nice

@Niko incidentally, my first top 1000 word was 837

Unrelated String

neat

@Niko i have 19

ayyyyyyyyyyyyyyyyyy

I solved Semantle #55 in 190 guesses. My first guess had a similarity of 12.45. My first word in the top 1000 was at guess #10. My penultimate guess had a similarity of -4.41. semantle.novalis.org

Aiden Chow

04:33

@UnrelatedString lmao penultimate guess has similarity of -4.41

:'D

Unrelated String

@allxy ...bare infinitives are verbs

Aiden Chow

idek what a bare infinitive is lel

Unrelated String

it's a to-infinitive without the to

Aiden Chow

@UnrelatedString oh alr that makes sense

so any infinitive, if u take out the "to", u can call it a bare infinitive?

Unrelated String

ye

i zoomed out to screenshot all of my top 1000 guesses and by the time all of them actually fit they were too small to read

Aiden Chow

04:38

@UnrelatedString lmaooooo thats similar to the first semantle i did with "craft", soooo many top 1000 words

Unrelated String

lmao

68 top 1000 guesses

Aiden Chow

@UnrelatedString sheesh, how many top 100?

Unrelated String

19

excluding the solution

i was consistently on the right track the entire time, it just took me fucking forever to actually get the solution

Aiden Chow

@UnrelatedString yeah thats frustrating

also anyone smart in haskell know how to golf this: tio.run/##y0gszk7Nyfn/P00hxzYtPyclRyOmQqFS185Iq0K7UtNAIed/…

Unrelated String

spoiler

Aiden Chow

04:43

i feel like there must be a better way to do \x y->2*x+y

Bubbler

You can strip l on both sides for a starter

Unrelated String

and you can use foldl1 to drop the 0 if you don't have to handle an empty list

PyGamer0

@Bubbler i read that as simp l o_o

Aiden Chow

@Bubbler oh wait huh that works???

Unrelated String

@AidenChow currying 😎

Aiden Chow

04:45

@UnrelatedString what does foldl1 do?

PyGamer0

fold without initial value

Unrelated String

@AidenChow actually it doesn't matter without l lmao

Aiden Chow

so any golfs on (\x y->2*x+y) or does that have to stay

Unrelated String

i feel like pointfreeing it may come out longer

Bubbler

pointfree.io says (+).(2*)

Unrelated String

04:47

oh

Aiden Chow

@UnrelatedString ...idk how to do that lol

Unrelated String

oh yeah you can just do that

Aiden Chow

@Bubbler oh that worked, idk how it works but it does

Unrelated String

got too busy trying some (.(2*)) fuckery when that's not the order it applies in lmao

Bubbler

So f=foldl1$(+).(2*) for 17b, and you can discount f=

Aiden Chow

04:49

what does the . do anyways?

Bubbler

\x -> f (g x) is f . g

aka function composition

\x y->2*x+y
\x y->(+) (2*x) y
\x->(+) (2*x)
\x->(+) ((2*) x)
(+).(2*)

Aiden Chow

@Bubbler oh wow... i certainly cant ever think of doing that, thats cool

PyGamer0

@AidenChow your haskell program in APL:
https://dzaima.github.io/paste#0S3vUNkHjUddibaPD0x91LdLUf9SzlytNwVDBAAgNFQwB#dVHBSsQwEP2VMhcTjKmiiHSpsIqHFXEF9@YKZtNpG@lOSjJV67I3b/6lX2KLol6EMGSYN/PevDGxJ5uUHVl2npKpQLmxniInnJtn4zgpkW0toGZuY5amHHrTNtqHKr14QQtqs0aufZHBzfx2AapGU2CI2QbOPTES7y36FiED07aNs2akSR@jp0liaxMict5xuXcCW7XyRZ9d3s6vdeTgqHJlL@4A1L4aAt7LrZwE5C6Q@FLGepwjpLw7vN@WA5uA6c3V4ckxKDg4AqlmeeFttx5E6Ar5osHxe9bPCgFr42hAzP9HVEh2QPxbf3L4fAZSOyIMC3zhHEJHoNzvSBvQMH53iZ1og2t5RyqnY7D5j6VmFbriVVeO626lnU@b1fCG5eCXfbRVDxYiFee1awrhpBJmPJ6Q@elm/lcGqL/pt1lTMdNPpulQB2wbY1GkS0orBR/vbyCl1I/e0cOSHnZhSbCVQk4@AQ

Aiden Chow

@Bubbler um if it can be empty list, what would this become

this? f=foldl((+).(2*))0

Bubbler

Yes

Aiden Chow

04:57

ok thx

Aiden Chow

05:10

to prepend some integer k to a list of integers l, is [k]++l the best way or is there a golfier way

Bubbler

k:l

Aiden Chow

@Bubbler oh yea that was obvious

allxy

05:41

@UnrelatedString Oh. I england good

PyGamer0

06:08

@lyxal did you see this? youtu.be/oY8tZQsXbrA

lyxal

I saw it earlier today

PyGamer0

06:24

Presh

1.6k 2 15 23

geometry puzzle reference-request probability probability-theory surreal-numbers trigonometry

hey looki found the guy from MindYourDecisions

PyGamer0

06:41

ok time to make another physics engine

huh my current one is private...

PyGamer0

07:42

CMC: Produce this fixed string: bebfjcgfdfijhjdcdiegcgeddidchjfaciiebjhbgjdjjdhfbaficajhejeefjcdahibgeagcigcaijj HINT: There is a pattern

emanresu A

Digits of pi

I've seen that one before

PyGamer0

:+

emanresu A

08:11

niko, Munich, Deutschland

261 1 4

code-golf math arithmetic string natural-language number pattern-matching

@Niko we have found the impostor

Niko

08:22

oh no

emanresu A

08:42

Thought this was software engineering

Unrelated String

09:06

same lmao

PyGamer0

a p5js game! dont let the ball touch the floor or ceil by tapping / clicking
https://dzaima.github.io/paste#0AwA#VVHRboMwDHzfV7AngsoCdKWaxlxNmva@X0iJ26YNIcIpHZr49yXQVpsUFJ/PPnyORhfRCSxsfh4i7YGBvJqjAdarKgS9T4VbAM8LT1pO6M4WWDJ1eVx3KBx@CNMLYsXyJfVf4ivHqVp24nIvVjtmEsu3oj7tu/ZsJFuWZZqneVKhJpz1/rB50PEp1FpZQrZepUNa5P5MRL8AUQ0L6KtZe9hAsXxODBS3xBuUVzjO4zTtmfCrQyKU/8f6CeYn28HyOM3TPwFfVuPkZXwIa9D3LrWL2EUZ2V54k0S3iHfYtD2yMN8tBwYvkS0ZndI9mtpTXi60P14rbHmk5PoEBLKtzw0ad13sp8aAWEx1p6yLgzJxJSEObfGEqKshPjhn6TXLamn4kSRq1XfcoMuMbTJbvhd8xYtMq60H/NbpBosQO/x22VH4B5z/MVGt0a2QoKVH95kOKCQX1qKRHwelJaNgJwrb8rvxtn8B

harder:
https://dzaima.github.io/paste#0AwA#VVHLboMwELz3K@gJo1ADUaiq0q0qRb33Fxy8aZwYY7GGFEX8e21IovZgeWf24dmxRhfRCSy8Xx4i7YGBvFqiEZ43VQgGT4VbAM8Ln7Sc0PUWWDJ3eVx3KBxuhRkEsWL9kvqT@MpprpadON@L1Z6ZxPKdqE/fXdsbydZlmeZpnlSoCZd5f7J5mOMp1FpZQva8Sce0yPNw5tSwAlGNKxiqZfr4DkHCU5kniYHixr6BJxY8LbKatif86pAI5X95l2DCvH5YfZp1DU/A19U07zQ9BDv0vUvtI3ZWRrZn3iTRLeIdNu2ALKi8cWDwHNmS0Sn9RlP7lB8X2h@vFbY8UnL9CgLZ1n2Dxl0N/tQYEIup7pR1cZhMXEmIQ1s8I@pqiA/OWXrNsloafiSJWg0dN@gyY5vMlh8F3/Ai02rnAb91utEixA5/XHYU/iOXN@ZUa3QrJGjp0V3TAYXkwlo0cntQWjIK60TBLe@NX/sX

PyGamer0

09:39

why does JS have var and let, why not just let?

i know the difference between them...

Unrelated String

isn't one of them way older

removing it could break a LOT of things

emanresu A

Yeah

I prefer to use let because I'd rather know that my variable already exists

Although I have tried to use var as a variable name once or twice when creating compilers...

Unrelated String

lol

PyGamer0

well what is the use case, afaict let can be used in place of var everywhere

@UnrelatedString i mean: :%s/var/let/g /s

emanresu A

let disallows declaring something twice within the same scope

PyGamer0

09:46

let a=1;let a=2;/*js hates this*/ and var a=1;var a=2;/*js loves this*/

emanresu A

Pretty much yeah

PyGamer0

im learning js by the node repl and entering random stuff ...

wait wth

emanresu A

Try this, it's pretty good. It's meant for absolute beginners so you may want to skip a bit ahead

PyGamer0

a=4 works without erroring?

emanresu A

@PyGamer0 I can think of at least five things about JS that would make you say that

@PyGamer0 Yeah, a in that context is a global variable

PyGamer0

09:49

lol

Razetime

@PyGamer0 direct variable definitions are ok in js

emanresu A

(Or a variable declared several levels above that one)

Razetime

i use let

emanresu A

^

PyGamer0

which is perferred, semicolons at end or not?

emanresu A

09:49

Your choice

My code's a mess of both with and without

PyGamer0

@emanresuA ok since JS looks similar to C, i will use semicolons

what are backticks? are they like python f strings?

emanresu A

Do as you wish :)

@PyGamer0 Sorta like python f""" but with ${} instead of {}

PyGamer0

ok

@emanresuA why dont these error? Array(10).fill(3);new Array(10).fill(3);

is the new optional ?

emanresu A

In this case, yes.

In some cases, no.

JS builtin constructors are weird

PyGamer0

also how do i list(range(32)) in js?

Razetime

09:54

@PyGamer0 always use semicolons

emanresu A

@PyGamer0 No neat way to do that, but [...Array(32).keys()] works

Razetime

js semicolon insertion causes unintuitive bugs sometimes

emanresu A

very occasionally

PyGamer0

@emanresuA i guess a function like range=x=>{let r=Array(x);for(let i=0;i<x;r[i]=i++);return r;} works like range with 1 arg...

for 2 args range2=(x,y)=>range(y).map(a=>a+x) might work...

emanresu A

10:09

range(y-x) right?

Functions can be variadic though

And you can do default parameters like in python

PyGamer0

@emanresuA yeah i read a blog post rn

@emanresuA yeah im dumb

@emanresuA yeah but i dont know how

yeah in conclusion i used a bunch of yeahs

emanresu A

I'm not sure how to do default args with that either :P, you'd probably want to do y ? range2(x, y) : range(x, y) or somethiing

PyGamer0

lol

emanresu A

In JS, a valueless parameter returns undefined

Which is falsy

PyGamer0

also i believe i can do (x=>x+1)(1,2,3)

emanresu A

10:19

Yeah, you can supply more than necessary args to a function

PyGamer0

thats just plain weird

emanresu A

JS is nice in not erroring on a lot of things where other langs would error, such as out of bounds indexing and missing function parameters

PyGamer0

what happens if i "sjsjsj"[100] then?

emanresu A

o/

PyGamer0

o/

PyGamer0

10:37

Ever wanted to see heron's formula fully expanded? Well you can now.

its shorter than what i expected....

PyGamer0

11:21

CMQ: Should there be a single byte builtin for "mode / element with max occurence"?

user

@PyGamer0 think of it as saying this.a=4, except this is the global object thingy

PyGamer0

oh

PyGamer0

11:47

@lyxal ^^^?

lyxal

digraph

PyGamer0

ok

die graph dieeeee

lmao

ophact

Yay I finally got the chance to do a review

lyxal

now's your chance to do a [big review]

Bgil Midol

Wordle 279 X/6

⬜🟩⬜⬜🟨
⬜🟩⬜🟩⬜
⬜🟩⬜🟩⬜
⬜🟩⬜🟩⬜
⬜🟩⬜🟩⬜
⬜🟩⬜⬜🟩

SegFaultPlus4

11:59

@AidenChow where is the link for that

Transcript for