advent of code 2025

[terse edge]

@native maple @verbal parrot @dusky frost @quartz aurora

@whoever else

[verbal parrot]

i hope i won’t quit this year’s aoc after day six

[terse edge]

u wont

i wont let u

[feral valve]

real

[native maple]

i forgot i still cant talk in programmning

[cloud iron]

You went to day 6 ?

[native maple]

im like very busy tomorrow i probably wont do it as soon as it comes out

[cloud iron]

I didn't commit more than day 1 💀
https://github.com/Julienraptor01/Advent-of-Code/tree/main/2024

[dusky frost]

thx

[verbal parrot]

https://github.com/Julienraptor01/Advent-of-Code/blob/main/2024/01.js#L43-L47

[cloud girder]

01.js: Lines 43-47

/**
 * @param {number[]} leftList
 * @param {number[]} rightList
 * @returns {number}
 */

[verbal parrot]

typescript is this way —>

[feral valve]

i think i want to do it in ocaml this year

[quartz aurora]

I'm just gonna do golf python again, if I have time

[cloud iron]

Frick typescript

I did code it in pure browser javascript

[dusky frost]

I'll probably start on wednesday since I'm in poland

[pale stirrup]

im doing kotlin but no java stdlib

[frigid socket]

AI ✨ of code

i forgot about AOC

i’ll do a language a day but only good languages

@native maple for a day i should do it in Apple Shortcuts for the laugh

[frigid socket]

@fallen lily

[fallen lily]

@terse edge @native maple @frigid socket c++ or c#

not sure which lang i want to use yet

[pale stirrup]

use the one you're less familiar with

[frigid socket]

cs

[fallen lily]

i've never even compiled c# before

[frigid socket]

read docs

[pale stirrup]

advent of code 2025

[fallen lily]

anyone made a leaderboard yet

[pale stirrup]

leaderboards carry over

[terse edge]

@native maple iM gonna use kotlin

I spent all my time working on actual projects that arent icy or a rust aoc framework

[pale stirrup]

soon

it approacheth

[verbal parrot]

are u doing random language or

[brazen salmon]

@native maple

[terse edge]

nah

just kotlin

Maybe i will solve it in random lang after kotlin

but prob not

[verbal parrot]

i see

[terse edge]

ro ie is doing it later

[brazen salmon]

@native maple

[verbal parrot]

i have c in my list i hope i wont get it

[terse edge]

lol

[brazen salmon]

advent of faint

[terse edge]

I just some random high schools lb

none of them completed 2024

[pale stirrup]

T-1:00

[terse edge]

woo

30s to wait 😭

i used a really stupid method for p2 at first

[molten bolt]

Meow

[terse edge]

oh its wrong

[verbal parrot]

WHAT

Gleam doesn't have loops

[fallen lily]

Isn't gleam a functional Language

[verbal parrot]

it seems so but idk why i always thought it wasn’t

[fallen lily]

Dotnet is taking 5000 years to download and cmake invokes fear in me

[fallen lily]

I will keep with my kotlin

I have a years worth of util classes already

[rugged kiln]

Ive "done" last year in kotlin

Quite comfortable working with it

[fallen lily]

@static aspen rate my cursed kotlin
https://github.com/sadan4/AdventOfCode-kotlin/blob/main/src%2Fmain%2Fkotlin%2Futil%2FtwoD%2FCoord.kt
https://github.com/sadan4/AdventOfCode-kotlin/blob/main/src%2Fmain%2Fkotlin%2Futil%2FtwoD%2FRectangularGrid.kt

[rugged kiln]

Even though im not doing this year, i hope 2/3 of the days wont be grid-based

[terse edge]

dude wtf is this

why can i not solve p2

[fallen lily]

Why husk

Can't start with number

[terse edge]

now i wait 5 mins

[fallen lily]

How would you tell the difference between 2l long literal and 2l identifier

[terse edge]

5 mins COOLDOWN AGAIN

AAAA

its so over

i think I know what the issue was

and its really stupid

and not my fault

totally

If this is gonna be wrong im gonna crash out

noT enough

i thought this means ||"be careful not to count the 0 multiple times when rotation > 100"||

ok good to kown part 2 took everyone 40 minutes

[verbal parrot]

i’ve been trying to solve it in gleam for the last hour why is ts so hard 😭

what if i just do it in python and then rewrite in gleam

[terse edge]

normal functional lang

[verbal parrot]

i just didn’t expect gleam to be functional language idk why

[terse edge]

can i solve this in untyped lambda calculus

yes

[verbal parrot]

i did it in python and it works with the example but not with the actual numbers 💔

[terse edge]

look at my spoiler

[pale stirrup]

got p1 in seconds and took forever on p2

[terse edge]

fuck intellIj

ok im like really far behind on all the lbs now 😭

[verbal parrot]

is it for first puzzle?

[pale stirrup]

thats p2

[verbal parrot]

oh okay

i solved it yay

turns out for some reason the text i pasted was trimmed out 😭😭😭

[native maple]

done in elle
||```rs
use std/prelude;

fn solve(string[] lines, bool p2) {
pos := 50;
hits := 0;

for line in lines {
    if line.is_empty() { continue; }

    way := line[0];
    step := i32::parse(line += #cast(string, 1));

    for _ in 0..(p2 ? step : 1) {
        pos = (pos + (way == 'L' ? -1 : 1) * (p2 ? 1 : step)) % 100;

        if pos == 0 {
            hits += 1;
        }
    }
}

return hits;

}

fn main(string[] args) {
lines := io::read_to_string(args[1]).split("\n");
$dbg(solve(lines, false));
$dbg(solve(lines, true));
}

@terse edge whats ur solution

[pale stirrup]

what's the empty line detection for

[native maple]

my ide automatically inserts a newline at the end of the file when i save any file (if there isnt one already) and i cant turn that off

[pale stirrup]

guh

[native maple]

oh it still works without the check

curious

i lied

i can turn it off

awesome

yeah code style consistency

@terse edge is that the vercel logo 😭

I BEAT EAGELY IN DELTA TIME

[brazen salmon]

why can discordrn syntax highlight elle

[native maple]

i set it to rust syntax highlighting

[brazen salmon]

oh

[terse edge]

https://codeberg.org/eagely/adventofcode-kotlin/src/branch/main/src/main/kotlin/solutions/y2025/Day1.kt

not original sol

i did +/- diff for p1, tried that for p2, realized i misunderstood the task and dId the +1 loop

[terse edge]

yes its a nextjs app that I vibecoded

havent changed the favicon

[native maple]

pretty good

[terse edge]

utils.pm was really useful

[native maple]

doing it in elle is surprisingly easy lol

[terse edge]

its a modulo correcting for negative numbers

[native maple]

feels just like python just a little more ass to work with strings

[terse edge]

no shit you spent 30000 hours making an awesome lang

@native maple aoc will unlock at 10 for me

after dec 7

[brazen salmon]

-#

[native maple]

wtf

it unlocks at 5am for me still

[terse edge]

cause ill be In utc + 5

until jan 4

[native maple]

insane

why did you take so long on p2

[native maple]

surely this cant have taken you 40 mins

[terse edge]

I vibecoded p1 and the ai failed to do p2

[terse edge]

,

probably if i read the entire text i would realize what was asked

will do that tomorrow

[native maple]

probably if you dont vibecode it you can get a decent time lol

[terse edge]

i was joking

[native maple]

so was i smh

[terse edge]

but tbh thats like average

[frigid socket]

Ban Eageler

[terse edge]

p2 took a while for a lot of ppl

[terse edge]

Watching out for bilboofan

[native maple]

i did both parts in like 20 mins i think?

[terse edge]

you read the task fully im guessing

cause u werent in a rush

[native maple]

yeah because im working in elle

[terse edge]

i read count every 0 pass and assumed it meant "count all the rotations that will cause at least one 0 pass"

[native maple]

there could totally be a random thing that completely throws me off and it just doesnt work or it takes 5 years to solve or segfaults or all of the above

so i have no reason to go fast

[native maple]

lmao horror

[frigid socket]

is it just me that cant login with gh

to AOC

failed to authenticate. (access_token request returned 429 Too Many Requests)

[native maple]

worked fine for me

[frigid socket]

insane

ill just use reddit oauth

[vague knoll]

going well so far

[native maple]

try again now

[frigid socket]

ok worked

i am doing day 1 in swift

[brazen salmon]

Rust

[brazen salmon]

Rust

[frigid socket]

no rust in my house

i will rpobably do a day in rust yk but iiwii

[brazen salmon]

Rust

[terse edge]

this is not your house

[frigid socket]

WHEN THE INSTALL IS IMMUTABLE

[terse edge]

what are you trying to saY with this

[vague knoll]

i might do rust on a later day

[terse edge]

im gonna keep doing kotlin

even tho intellij crasheS every 2 minutes

[vague knoll]

I'll probably use higher level langauges as the challenges get harder

rn I'm trying to open a file in assembly

I've never done it before 😭

maybe I should've made it easier by embedding the text in the binary

[frigid socket]

i am making a Dial class

JAVAAAA

(not java)

[vague knoll]

the hardest thing i found about assembly is debugging it

maybe i should use a debugger ui instead of gdb

[native maple]

evil

you should do it in bqn

[brazen salmon]

license Elle under oql @native maple

[native maple]

what is oql

[frigid socket]

shitty license

[brazen salmon]

opinionated queer licence

[frigid socket]

https://oql.avris.it

listening @brazen salmon

[frigid socket]

*license

okay so imd one @native maple

[terse edge]

are you allowed to use mit licensed dependencies if you use a license like this

i would love to use something like this https://anticapitalist.software/

[terse edge]

or this

[native maple]

yeah that seems right

[frigid socket]

eagely ban eta wen

[native maple]

bun0 ban eta when

[terse edge]

theyre the same thing

1. The above copyright notice and this permission notice shall be included in all copies or modified versions of the Software.

2. The User is one of the following:
a. An individual person, laboring for themselves
b. A non-profit organization
c. An educational institution
d. An organization that seeks shared profit for all of its members, and allows non-members to set the cost of their labor

3. If the User is an organization with owners, then all owners are workers and all workers are owners with equal equity and/or equal vote.

4. If the User is an organization, then the User is not law enforcement or military, or working for or under either.

@native maple use this

[native maple]

that's just MIT lmao

[terse edge]

its not

its mit but it cant be used by google micrsoft discord

[native maple]

oh i see

[terse edge]

and whatever other evil companies

[native maple]

that's awesome

[terse edge]

im gonna use this

[native maple]

ok but companies can still get around that

[vague knoll]

assembly has atrocious dx

how can you get away with this in 2025

[terse edge]

how

[native maple]

microsoft can open a non profit organization funded by microsoft and use this in their code

[terse edge]

https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en this is cool too but it doesnt limit military use

[terse edge]

theres prob a better worded license that avoids that

[native maple]

true

[terse edge]

and if they have to gO thruogh the effort of opening a non profit just to use my software thats already enough damage done

https://github.com/big-tech-sux/resistant-licenses

[vague knoll]

i don't think the millitary is gonna use your bad code

[terse edge]

LMAOO

the software shall be used for Good, not Evil. the original author of the software retains the sole and exclusive right to determine which uses are Good and which uses are Evil.

[frigid socket]

okay i think i got it right @native maple

Eagely is Evil

[terse edge]

ik, but they might use rosies

[vague knoll]

true...

[terse edge]

Did vee tell ou to harass me

[frigid socket]

Evil Eageler

i harass all NixOwos Users

[terse edge]

@native maple what does this mean Users of this work are obligated to freely provide public access to AI scripts written to be used by this work.

[terse edge]

solution

https://github.com/jamiebuilds/license

"any of their subsidiaries"

[vague knoll]

This license is granted to everyone except for YOU, PHIL (bullied me at school)!!

[frigid socket]

my example passes but not my real input

okay i was using my reddit inputs

[terse edge]

@lusty atlas the leaderboard persists across years

its still up

https://adventofcode.com/2025/leaderboard/private/view/1776680

[frigid socket]

part 2 might be easy tbh

That's not the right answer; your answer is too high. If you're stuck, make sure you're using the full input data; there are also some general tips on the about page, or you can ask for hints on the subreddit. Please wait one minute before trying again. [Return to Day 1]

[terse edge]

read the entire task and read it carefully

i wasted 40 mins on it

cause I misunderstood

[frigid socket]

it's ||every time the dial goes through 0 i do count += 1||

right

[terse edge]

||what if you go over it multiple times in 1 iteration||

[frigid socket]

yeah i figured that out

i think i found issue

this shouldn't happen (it started at 0)

[vague knoll]

nooo

I haven't even got file reading to work yet

[frigid socket]

finally works

That's not the right answer. If you're stuck, make sure you're using the full input data; there are also some general tips on the about page, or you can ask for hints on the subreddit. Because you have guessed incorrectly 4 times on this puzzle, please wait 5 minutes before trying again. [Return to Day 1]

kill yourself

[native maple]

everyone has a different input

[frigid socket]

yeah ik im shitposting 😭

i finished p1

[native maple]

awesome

[frigid socket]

now im killing myself over p2

it runs on my example but not on my real inputs

[vague knoll]

I MANAGED TO READ THE FIRST CHARACTER

[frigid socket]

WOOOOOOO

i am reviewing logs

@terse edge i am AI generating examples and it works

but not on my real input

im gonna kms

[terse edge]

what happens when you go R19423

[frigid socket]

L30
R48
L5
R60
L55
L1
L99
R14
L82
R19423

||pt1 3, pt2 200||

[terse edge]

run this

see if it matches

[frigid socket]

yeah

it doesn’t match on my input tho

i’ll look again tonight or something

[vague knoll]

maybe spoiler it?

[terse edge]

its not readable enough to immediately tell someone what the solution is

and its the harder but faster approach

[frigid socket]

true

[quartz aurora]

I should set my alarm so I can do aoc before work

Won't be able to do it until pretty late tonight

[terse edge]

@native maple why do u have srcht mirror

[rugged kiln]

Why is there only 12 days this year

[verbal parrot]

It takes a ton of my free time every year to run Advent of Code, and building the puzzles accounts for the majority of that time. After keeping a consistent schedule for ten years(!), I needed a change. The puzzles still start on December 1st so that the day numbers make sense (Day 1 = Dec 1), and puzzles come out every day (ending mid-December).

[rugged kiln]

Ohhh makes sense

[terse edge]

Understandable and all but does he not get full time job money from aoc

[verbal parrot]

that's just donations...?

[verbal parrot]

(p1 spoilers) functional programming is kinda fun but i feel like im doing it so unidiomatic

[native maple]

why not

[brazen valley]

i think this is ok

p2 is where it gets more funny

[brazen valley]

look at his sponsors list dude

sony, spotify, jane street

all sorts of companies sponsor this

[verbal parrot]

yeah i’m still not done with p2

[brazen valley]

I just finished it

[vestal owl]

||```js
@Initialize {
let file = ObjFile_Create(OBJ_FILE_TEXT);
let res = ObjFile_Open(file, GetCurrentScriptDirectory() ~ "./inputs/1.txt");
if (res == false) {
RaiseError("failed to open the file");
}

let rotation = 50;
let zeros = 0;

let lc = ObjFileT_GetLineCount(file);
ascent (line_idx in 1..lc) {
    let line = ObjFileT_GetLineText(file, line_idx);

    if (line[0] == 'L') {
        rotation += atoi(erase(line, 0));
        zeros += floor(rotation / 100 + 0.0001);
    } else if (line[0] == 'R') {
        if (rotation == 0) {
            zeros--;
        }
        rotation -= atoi(erase(line, 0));
        zeros += floor((100-rotation) / 100 + 0.0001);
    }

    rotation += 1000;
    rotation %= 100;
}

RaiseError(zeros);

}

i hate how it's actually feasible with danmakufu

tho still prefer scratch

i like how there is a different "for loop" for ascending and descending ranges

[native maple]

what language is this

[verbal parrot]

oh my god yesss

[vestal owl]

danmakufu

[vague knoll]

is this actually quite challenging?

even in a high level language?

[vestal owl]

it's a custom commonly used bullet engine

and has its own language

[vestal owl]

it has some caveats, for me part 2 took a bit

[vague knoll]

oh, there's a part 2?

i'm still on part 1

[vestal owl]

bruuuuuuuh

[vague knoll]

it's quite hard to do things in asm

or rather, quite slow

[vestal owl]

wait you do asm?

damn based

[vague knoll]

it's not particularly hard to grasp the concepts

i don't really do asm much, I just learnt a little bit

[vestal owl]

btw do you link with libc or no?

[vague knoll]

no

[vestal owl]

mad respect

[vague knoll]

😭 i'm just doing this because i thought it would be fun

[vestal owl]

dw i bet it'll get easier for the next days for you

[vague knoll]

calling C functions from asm would be a challenge of its own lol

[vestal owl]

cuz you'll have your number parsers and printers and shit by then

[vague knoll]

I did find out a bit about that

[vestal owl]

it'd also defeat the whole purpose

well good luck

[vague knoll]

thank you

i'll need it

tbh i think i will switch to c if it gets too hard

or maybe some more interesting high level langauges

[verbal parrot]

this is kinda bad but as long as it works yk https://github.com/ficcialfaint/advent-of-code/blob/master/2025/01/src/one.gleam

alright it's time to spin the wheel for tomorrow

[vague knoll]

what the hell is coffeescript doing thhere

[verbal parrot]

[vague knoll]

you have basically three different versions of js on there

[verbal parrot]

i mean coffeescript is kinda a different language no?

anyways i hope dart isn't horrible

all i know about dart is flutter

sure why the fuck not

[vague knoll]

also if you went with objective c have fun writing it on a non apple platform

(unless you are an apple user 👎👎)

[vague knoll]

i guess maybe it's usable with openstep

or something

i never worked that out

cool https://github.com/bergercookie/asm-lsp

[native maple]

apparently its quite hard?

idk i didnt find it hard and my solution is like 10 lines

ok i lied its like 30

[feral valve]

ocaml
||```
let emod a b =
let r = a mod b in
if r < 0 then r + abs b else r
in

let times = ref 0 in
let dial =
String.split_on_char '\n' input
|> List.map (fun line ->
let line = String.trim line in
(line.[0], String.sub line 1 (String.length line - 1) |> int_of_string))
|> List.fold_left
(fun acc (char, count) ->
let new_acc =
match char with
| 'L' ->
times :=
!times
+
if acc = 0 then count / 100
else if count >= acc then ((count - acc) / 100) + 1
else 0;
emod (acc - count) 100
| 'R' ->
times := !times + ((acc + count) / 100);
emod (acc + count) 100
| _ -> assert false
in
new_acc)
50
in

[native maple]

@feral valve @terse edge global variables

[feral valve]

cool

can’t you talk in #🪅-progaming

[lusty atlas]

bro i just brute forced this shit

i tried doing it with math but i'm too dumb

[lusty atlas]

not advent of code related

[lusty atlas]

😭

fire

[verbal parrot]

NO

[feral valve]

like while loop dial += 1 or something?

[verbal parrot]

wdym brute force you get rate limited every submit

[feral valve]

why are these all real languages?

add uiua, lean, idris

[lusty atlas]

yes

[feral valve]

reasonable runtime?

[lusty atlas]

yeah, 0.003315seconds

[verbal parrot]

i only added ones that are either well known and have lots of documentation or something i wanted to try before

[lusty atlas]

the compiler probably optimised it to a math solution lol

[native maple]

well then let me talk in programming please

[native maple]

no

[feral valve]

what did you get silenced for lol

[feral valve]

you ever tried a lisp? they’re really cool

[verbal parrot]

the syntax is scaring me and i think the tooling won’t be so good

[lusty atlas]

#🪅-progaming message

case in point: yapping about elle in this thread

[native maple]

its.. not like i have anywhere else to talk about it?

im sorry but i didnt create this problem i just want to talk about elle

[lusty atlas]

your own server, dms, etc

[native maple]

is it strictly prohibited to talk about it here

i barely send like 100 messages a month about it anyway im too busy to work on it as much as i used to

it always feels like my presence here is directly against you and i dont get why i cant just live in peace

is what im doing that much of a threat or annoyance to the server lol

[vague knoll]

to be clear people are allowed to talk about their personal projects in that channel... right?

[lusty atlas]

yes if it's not all they ever talk about

rosie has always treated programming like it's her personal blog/talk channel and that is just annoying

anyway let's keep this channel advent of code related

[fallen lily]

Time to do AOC day 1

[lusty atlas]

pretty easy today still

definitely harder than last year day 1 though

[fallen lily]

got the first one first try

[lusty atlas]

horror font

[fallen lily]

guh

wrong gif

[fallen lily]

||v7310||

||^6047||

😭

||v6689||

[feral valve]

this is mildy cursed ngl

[fallen lily]

What cursed language is that

[feral valve]

ocaml with a preprocessor

[fallen lily]

Cursed

I'm doing kotlin this year because cmake scares me, but I want to do c++ as well

Hopefully my grid class will be helpful this year

Maybe I'll throw rust on top of that

[vague knoll]

meson is pretty nice

also makefile is easy for simple things

(with no deps)

[fallen lily]

Yeah, I have some makefile + flake projects

But the issue comes with the fact that I do most of my dev on my windows laptop and Linux desktop 50/50

I can run makefiles on windows

[feral valve]

just raw dog clang++

[fallen lily]

But then the deps become an issue

[fallen lily]

That's pretty much what a makefile does

[vague knoll]

just running compilers directly is easy though too yeah

they link for you

so convinient

[fallen lily]

I even have a script to generate compile commands.json from a makefile on winfows

[vague knoll]

instead of using proper cmake presets i have a script to run cmake -B build with the correct args

unrelated but i just remembered

[vague knoll]

🐻

[fallen lily]

Yeah

I use that on linux

It doesn't support windows

Compile with -Mj then run this

$ErrorActionPreference = "Stop"
[System.IO.FileInfo[]] $paths = Get-ChildItem -Path dist -Filter *.json -Name -Recurse -ErrorAction SilentlyContinue
if ($paths.Length -eq 0) {
    Write-Error "No compile_commands.json files found in dist directory."
    exit 1
}
$paths = $paths | ForEach-Object { "dist/$_" }
"[$(Get-Content $paths)]" -replace '.{2}$', ']' > .\compile_commands.json

Cursed but works

[vague knoll]

i don't speak pwsh

what is this "we have find at home"

[fallen lily]

Good

It's cursed

Fun fact! You can't pipe binary data

Powershell hard wraps text in pipes at 80 characters

(the issue on their repo says this is fixed but it still didn't work for me)

[vague knoll]

seems nice how it can have types? then again what if you doing with your shell scripts

tbf i don't really use plain shell scripts often

[fallen lily]

You need the types so it doesn't cooerce into a string

Also the lsp is pretty good

[vague knoll]

i would probably just write a script and run it with node

[feral valve]

i wish Ocaml had a print anything function

[native maple]

can't you printf "%a" foo.pp

[lusty atlas]

using languages like C where you can't just print anything made me realise how good we have it in languages that do

[native maple]

rate this solution
||```sh
sed -e 's/(.)(.)/\1 \2 lEx/' input_1.txt | tr LR '01' | dc -e '[s_l_%s%l%l%[l_+]s0>]sR0sZ50sP[s@s&l&2_1+l@*lP+100lRxsPlP0[lZ1+sZ]s"="lZpsZ]sE[?lXx]sXlXx'

[lusty atlas]

amazing

@hollow oasis @ionic flare today is very uiuable btw

[hollow oasis]

oh my god

ok

ill do it

i havent checked the problem yet but what i hate about doing aoc in uiua is that parsing is soooooooooooooooooooooooooo bad

[vague knoll]

I love printf

[verbal parrot]

erm you don’t need to spoiler it

[quartz aurora]

Order of magnitude of the answer is technically a spoiler, though a very tiny one

[verbal parrot]

but the puzzle inputs are different for everyone anyways so what’s the point

[quartz aurora]

But the order of magnitude is usually the same

[hollow oasis]

part 1 is so easy but i cant parse a goddamn thing 😭

kill me

[cloud iron]

i hate p2 because i'm stupid and also i'm doing it in javascript which does those kind of things

i think my first one is sane, but i don't even want to see my second solution anymore

[fallen lily]

you will use

[verbal parrot]

spoiler it

[cloud iron]

the browser can't run ts

[fallen lily]

yeah

that too

[fallen lily]

[quartz aurora]

I'm on 120 bytes, but don't have time to optimize it

[cloud iron]

wdym, it's a file

and it shouldn't show anything

[verbal parrot]

i’m pretty sure it’s previewed on desktop

[cloud iron]

just the link to the input

[verbal parrot]

isn’t it?

[cloud iron]

it's safe

[terse edge]

is it annoying to anyone else or just you

rosies elle blog is the direct cause of multiple people starting their own compilers and learning abuot it

[vestal owl]

good framework language jumpscare

[vestal owl]

why would you need lsp for assembly tho

almost all istructions are like 3-4 letters long anyway

[vague knoll]

kind of niche

i don't think there are many implementations of lsp for asm

[vestal owl]

vouch

tho i should get back to it at some point

[ionic flare]

HOLY

AOC

I FORGOT

[vestal owl]

when in doubt just add an epsilon

[cloud iron]

Omg this is cursed

I swear i'm just gonna do it in assembly

At least i'll have sane integer division

[ionic flare]

Use bigint

[vague knoll]

i have spent like hours on part 1

[vestal owl]

assembly was the other option i was considering

[ionic flare]

C'mon

[vague knoll]

😭

but if you want

[vestal owl]

but danmakufu is funnier and requires less mental toll

[vague knoll]

do it in roblox studio

[vestal owl]

that's just lua with extra steps

[terse edge]

uiua comeback

[vestal owl]

quite literally

lua cured my depression and uiua gave it back

[vague knoll]

i think there are also extra features? but i think there's an open source lua fork / implementation which has the extra features they use anyway

[hollow oasis]

im so rusty

[vague knoll]

i wish there was a luau to lua compiler

[hollow oasis]

@lusty atlas CBT ||```
P ← ⨬¯∘ =@R ⊙⋕ °⊂ # parse number
S ← ⬚50 (◿100+) # spin the dial
C ← ⊢ °⊚ # count zeroes

C S&rlP &fo "day01/input.txt"

[native maple]

@terse edge @terse edge bqn soon

[cloud iron]

Wot
I have spent minutes on part 1 if not seconds
But on part 2 my most naïve solution had a flaw then i overcomplicated it then i did some shit then i did cursed stuff and then i gave up, did go to reddit and literally saw the solution i wanted to do but written in some cursed ass way that was unreadable and noticed that for debugging i was working on a slice of 150 of the inputs and that's why values where crazy so i closed reddit, refixed my whole thing like i wanted to do it and then it worked, but i won't send it here until it's written in a way where there isn't thousands of if for special casing
Because i literally went the if spam way to basically represent all code paths instead of like actual nice logic

[terse edge]

too lazy to do any other lan

lang

was gonna do esoterics but meh

[vague knoll]

i am doing it in asm

I was trying to warn you

[cloud iron]

Want to do it in esoteric, better, do it in javascript :3

[vague knoll]

just use a bigint

[vestal owl]

my most naïve solution had a flaw then i overcomplicated it then i did some shit then i did cursed stuff
that's just 50% of programming, the other 50% is just googling stuff

[vague knoll]

😭

rn my int parser seems to be yielding -1 idk how

[vestal owl]

want help?

[vague knoll]

I think that's kind of against the spirit of aoc

idk though this is my first time

[cloud iron]

-# tf is a big int ? /j
It's compatible with Number stuff right ?

[vague knoll]

uh.. not really

[cloud iron]

Nah having help is fine
Yoinking someone else's logic isn't imo

[vague knoll]

well, you can just convert any number to a bigint

and back

and you can also parse a bigint from a string

and bigint constants just have n added to the end

[cloud iron]

Number begone then, welcome BigInts

Floats are a mistake, fixed point is more precise

[vague knoll]

js is strange the Number constructor returns NaN if invalid, BigInt constructor throws a SyntaxError

[ionic flare]

That's just floats

NaN is a number

[vague knoll]

it should return null

[ionic flare]

Bad

That's two types

[vague knoll]

nah ok ig it does make sense, apart from the fact Number should probably just throw an exception too

[cloud iron]

https://jsisweird.com

[ionic flare]

No because number has NaN

NaN is a Number

[vague knoll]

yeah i realise but it doesn't feel like great design

though it certainly is javascripty design

[ionic flare]

Floats are a good deal older than js

[vague knoll]

like how out of bounds indexing returns undefined (idk of any other language that does this apart from lua )

[ionic flare]

Lua does doesn't it

True

[vague knoll]

javascript likes to make errors silent but deadly

though it is convinient sometimes

[ionic flare]

Errors as values as a service

[vague knoll]

in java for example there's NumberFormatException which feels saner

like what if you want to support writing NaN and be able to distinguish things which are actually invalid

[terse edge]

js

[vague knoll]

of course the solution to all problems is discriminated unions

that would be even better than exceptions

[native maple]

i have an idea

[vague knoll]

how did i even do this

oh

put some debugging code in the wrong function, now it prints every number as a char

ok, if i add my debugging code to the right place it stops the infinite loop

maybe i should keep the debugging code then

(it actually makes the program exit too early)

[hollow oasis]

dude i typed smth stupid into uiua and it crashed ym computer

fuck off

[fallen lily]

guhhhhhhhhhhhhhhhhhhhh

why is intellij debugger not working

istg

[terse edge]

reminds me

imma do an nvim config for kotlin

but not today

[fallen lily]

iirc the kotlin lsp is still half baked

GUHHHHHHH JETBRAINS

[hollow oasis]

i cant use my computer

[fallen lily]

EXCEPTION BREAKPOINTS WORK

LINE BREAKPOINTS DONT

[terse edge]

i dont want to use intellij tho

[fallen lily]

neither do i

[terse edge]

is the nvim java lsp good

[fallen lily]

but i can't get anything better without losing feature i rely on

[fallen lily]

when i manage to set it up, i have enjoyed jdtls

be warned

it is a pain in the fucking ass to setup

[terse edge]

i can imagine

they use codeberg

i have to use their software now

[feral valve]

what i ran MasonInstall once and it was good

[fallen lily]

i dont use mason

(but when i did it still was a pain)

[feral valve]

i have everything configured with nix except for nvim lol

[fallen lily]

same

but i install all the lsp servers via nix

[pale stirrup]

||https://github.com/wingio/advent-of-code/blob/2025/aoc/solver/src/commonMain/kotlin/solver/solutions/Day01.kt||

[fallen lily]

intellij should add a feature that requires semicolons in kotlin

[pale stirrup]

nop

bad

[fallen lily]

yop

zoot would love

[pale stirrup]

i hate semicolons

[fallen lily]

i dont 🥰

[pale stirrup]

does nothing but make writing code annoying

[feral valve]

yeah i'm removing semicolons

[vestal owl]

switch to helix

greatest decision of my life

[fallen lily]

@pale stirrup rate

very cursed

[pale stirrup]

very

oh hey we got the same input i think

[fallen lily]

i got here by bashing my head against the debugger until it made sense

[pale stirrup]

also i think you forgot you're using kotlin

[fallen lily]

why?

[pale stirrup]

you could change that if chain to a when statement

[fallen lily]

oh

i only ever think of when as switch

like that?

oh wait

i think i can simplify even more

[pale stirrup]

if you look at my solution you can simplify quite a lot

||```kt
part2 {
var current = 50
var count = 0

turns.forEach { turn ->
    val prev = current
    count += abs(turn) / DialNums
    current += turn % DialNums
    if (prev != 0 && current !in 1..<DialNums) count++
    current = (current + DialNums) % DialNums
}
count

}

[fallen lily]

i think i'm going to keep it here

[feral valve]

oh wow the decorators look really nice, how does it work

[fallen lily]

it's mostly the same as yours except for me not ||modding current by DialNums||

[fallen lily]

very cursed

[pale stirrup]

DialNums is just 100

[fallen lily]

yes

[pale stirrup]

i just put it in a constant

[pale stirrup]

in normal languages we call them annotations

[fallen lily]

js/ts/python use decorators

jvm uses annotations

[pale stirrup]

i said normal languages

[fallen lily]

i can get behind the python hate

but not the js/ts 🥲

[pale stirrup]

I've used both for years im allowed to make fun of them

[fallen lily]

i like the annotations i made, but my favorite part is being able to use a generic for the type of input i get

you can find the cursed code for @UseFile here
https://github.com/sadan4/AdventOfCode-kotlin/blob/main/src/main/kotlin/Solution.kt#L21-L32

[cloud girder]

Solution.kt: Lines 21-32

private fun <T> generateInput(fn: KFunction<*>): T {
    val fileName = (fn.findAnnotation<UseFile>() ?: UseFile("input.txt")).fileName
    val f = File("src/main/kotlin/solutions/y$year/d$day/$fileName")
    val ret: Any = when (fn.parameters[1].type.jvmErasure) {
        File::class -> f
        String::class -> f.readText()
        List::class -> makeLines(f.readText())
        else -> throw RuntimeException("Unsupported type: ${fn.parameters[0].type.jvmErasure}")
    }
    @Suppress("UNCHECKED_CAST")
    return ret as T
}

[fallen lily]

and @Solved here https://github.com/sadan4/AdventOfCode-kotlin/blob/main/src/main/kotlin/Solution.kt#L43-L63

[cloud girder]

Solution.kt: Lines 43-63

val time = measureNanoTime {
    try {
        ret = fn.call(this, args)
        try {
            val expected = fn.findAnnotation<Solved>()?.answer;
            if (expected != null) {
                if (ret?.toString() != expected) {
                    didPart1Fail = "Expected $expected, but got ${ret?.toString()}";
                } else {
                    didPart1Fail = "OK"
                }
            }
        } catch (e: Throwable) {
            ret = "Error checking part 1:\n${e.stackTraceToString()}"
            didPart1Fail = "ERR";
        }
    } catch (e: Throwable) {
        ret = "Error running part 1:\n${e.stackTraceToString()}"
        code++;
    }
}

[fallen lily]

wait

the class doesn't need to be generic

i get they type from the function

guhhhh

[fallen lily]

oh wait it does

because the methods are inherited

[vague knoll]

it's actually really easy to get into the habit of adding them

and then accidentally add them when writing python/go/kotlin, but oh well

[fallen lily]

That's pretty much where I am at lol

[vague knoll]

protip use semicolons in asm to do multiple things in the same line

mov rax, SYS_WRITE; mov rdi, STDOUT

(do not view this with syntax highlighting

[fallen lily]

Don't worry, discord mobile has my back on that (no syntax highlighter at all)

@vague knoll what language are you using this year?

[feral valve]

there's none for me on desktop either

[vague knoll]

i already said quite a lot of times and people pobably think i'm boasting but assmebly

it's not a good idea

getting late and i still haven't finished part 1

[fallen lily]

If you are using vencord and have shiki enabled it loves to break all the time for some reason

[vague knoll]

the problem is its just really easy to make mistakes which are really hard to debug

[fallen lily]

Is there no dwarf debugging for assembly

[vague knoll]

my parser suddenly gives up in the middle of the file and idk why

[fallen lily]

Tbh why not just use c with no libs or smth

[pale stirrup]

crazy how something as simple as
||kt part1 { var current = 50 turns.count { turn -> current += turn current % DialNums == 0 } }||
is still so much assembly

[fallen lily]

Would seem like the same level of challenge, but a lot less infuriating

[vague knoll]

not really

c is super easy

[pale stirrup]

oh you just haven't gotten past input parsing?

would check out

[vague knoll]

well it was working... but i notice it stops working in the middle of the file

[vague knoll]

compared to this i mean 😭

obvs in a big program no gc makes things harder

but for simple programs it is pretty easy generally

[fallen lily]

Tbh I never really considered memory for AOC

Just malloc and don't worry about free

[vague knoll]

that's actually not a bad idea though

in a short running program memory leak is fine

[fallen lily]

I mean if you know the lifetime of your program will be the same as the lifetime of your memory. Why worry about it

[vague knoll]

leaking everything is ultimate memory safety

[fallen lily]

I mean, isn't that kind of the viewpoint rust has?

Rust doesn't view memory leaks as unsafe iirc

[pale stirrup]

when the program runs in under a millisecond a memory leak means nothing

[fallen lily]

Yop

My kotlin answer ran in like .5ms

(for part 2)

[pale stirrup]

both parts of my solution run in microseconds

[vague knoll]

i bet my assembly solution is slower than jvm

i didn't put any effort into optimisation

[fallen lily]

Are there no optimizing compilers for assembly

[pale stirrup]

im not on the jvm

[vague knoll]

watever

jvm kotlin same difference

[fallen lily]

Wing insane doing kotlin native

[vague knoll]

wing running on the kvm

(kotlin virtual machine)

[fallen lily]

I need my jvm reflection

[pale stirrup]

no i mean im straight up running it natively

like its just a regular executable

[fallen lily]

I think I will make a c++ AOC thing soon™

[vague knoll]

I am using gdb to debug and it works well enough

but there is a real art to getting the code to break in the right place

which is hard when things just randomly happen in the middle of execution

i wish debuggers could travel back in time

[pale stirrup]

wonder how long it'll take until the puzzle is just solving a maze

[vague knoll]

hmm ig that's gotta be possible in theory

just like how in emulators you can reverse time to make playing a game easier

[fallen lily]

I know v8 can do that

You can restart any stack frame that isn't interrupted by an async/await block

[vague knoll]

oh looks like gdb can do that

cool

but it's not like it can un-print stuff

or un-read a file

surely

or is it just magic

can it reverse aging too

[fallen lily]

gdb devs are wizards

[vague knoll]

this is a life saver

[native maple]

why is this so painful

[vague knoll]

the moment of truth... and it's too high

😭

[fallen lily]

Send code

I'm curious what asm AOC looks like

[frigid socket]

@fallen lily Satan.

I should try figuring out p2 when i get home

[fallen lily]

It's a bit annoying

@frigid socket what lang are you using

[frigid socket]

swift for today

[fallen lily]

Evil

[frigid socket]

howwww

@fallen lily satan

Swift so good

[vague knoll]

do people push their aoc to github

or is that weird

this horror needs preserving

[native maple]

IM SOOOOO CONFUSED

WHAT THE FUCK IS WRONG WITH THE TS TYPE SYSTEM

[vague knoll]

lmao are you doing it with typescript types

[native maple]

WHY DOES THIS BREAK THE RECURSION LIMIT

ITS THE EXACT SAME THING

[vague knoll]

average ts code

[native maple]

??????????????

[frigid socket]

i should push my garbagecode

[fallen lily]

I do

[vague knoll]

the code is too horrific

discord won't let me send it

it just vanished

[fallen lily]

@native maple are you doing what I think you're doing

[vague knoll]

whyyy

[frigid socket]

https://git.nin0.dev/nin0/aoc-2025 ignore all the shit

ill clean up later

1/ has my solution

[fallen lily]

vs error

Evil

[vague knoll]

?

lemme try without spoiler

thehe start of the file won't have any spoilers

it's just syscall declarations

[fallen lily]

Any errors in console

[vague knoll]

ohh

maybe vencord bug

i can send this image...

can send from moonlight

but it doesn't embed 😭

what's a better file extension

[fallen lily]

asm

Or .S

[frigid socket]

👺

[vague knoll]

😭

discord bad

[frigid socket]

AI ✨sm

[vague knoll]

i will just do txt

[fallen lily]

@vague knoll love?

[vague knoll]

open with reddit

oh

STDERR is defined to the same thing as STDOUT

there was a reason i did that

i don't think it's needed any more

[native maple]

ok well

safe to say i wont get the solution for the full input

@lusty atlas @terse edge rate

https://github.com/acquitelol/aoc2025/blob/mistress/01/solution.ts

my favourite functional programming language

ok ive figured out a better way to do mod

[native maple]

yes

[quartz aurora]

Huh, TIL python's int(str) strips whitespace

That'll save me several bytes

[frigid socket]

@native maple @vague knoll i think i will just impl a literal dial

||go up one and if it reaches 100 go back to 0||

[vague knoll]

are you stuck on it even thouigh you were using a high level language

[frigid socket]

yes

pt 2

it works on most examples but not my real input

tomorrow which lang should i do @vague knoll

not asm

[vague knoll]

actionscript

||turns out i overcomplicated my result - i guess you don' tneed to count all the times the dial goes past 0 without landing on it?||

[frigid socket]

huh

you kinda need to do that

[vague knoll]

||well it was way too high when i did that||

||and it looked like in the example that isn't what's meant to happen?||

[frigid socket]

||part 2 right||

[vague knoll]

||noo part 1||

[frigid socket]

the kode tode cannot read

[vague knoll]

||did i do part 2 early||

[frigid socket]

||yes 😭||

[vague knoll]

lmaaoo

[frigid socket]

||@vague knoll loves||

[frigid socket]

||ig :snackstare:ive up @vague knoll||

[quartz aurora]

I'm currently down to 98 bytes, a very good number

||```py
v=50
n=m=0
for L in open(0):
for i in[L<'R']int(L[1:]):v+=1-2i;k=v%100<1;m+=k
n+=k
print(n,m)

[frigid socket]

@brazen salmon i am binary searching my input to see which is fucking with my results

[fallen lily]

nop, meson is utter trash
https://mesonbuild.com/FAQ.html#why-cant-i-specify-target-files-with-a-wildcard

i need that for my projects

cmake supports it

make supports it

[quartz aurora]

Yeah, build system that doesn't support globs is not usable

[fallen lily]

also no make backend kinda

[quartz aurora]

That part I'm fine with

[frigid socket]

@fallen lily fix my solution

[quartz aurora]

The whole two-stage compilation model is just cringe

Though, it sounds like it's still two-stage, just with ninja as backend

[fallen lily]

is that part 2, 1, or both?

[quartz aurora]

Both

[vague knoll]

isn't this really discouraged in cmake though

don't get me wrong i love it when i don't have to list all my source files

i finally figured out part 1

i figured out part 2 before part 1 😭

[fallen lily]

yes but at least it's possible and supported

also guhhhhhhh

[vague knoll]

meson does seem to actually tell you how you can do it

[fallen lily]

fun fact! a shell script is not cross platform

[fallen lily]

so does cmake

[vague knoll]

i've never seen any big projects using globs

[fallen lily]

most (read: all) of my projects aren't big enough where i need to move away from globs

[quartz aurora]

With some minor tweaks (and a much uglier output format) I'm down to 96 ||```py
v=n=0
for L in open(0):
for i in[L<'R']int(L[1:]):v+=1-2i;k=v%100==50;n+=k*1j
n+=k
print(n)

[fallen lily]

at most, there will be a couple dozen files

[vague knoll]

for me it just seems like a minor convinience on a small project

[frigid socket]

@vague knoll might try writing a js solution and see if it runs

[fallen lily]

more than a minor convenience to me

[vague knoll]

cool

[fallen lily]

am i doing something obviously wrong or is clangd just insane

[vague knoll]

clangd is insane

[cloud iron]

i agree, it's trash because they say the syntax is unpleasant and i disagree with them, i actually like to write makefiles

[vague knoll]

i don't imagine writing makefiles really... scales

well, people try

linux

[fallen lily]

tbh i dont them not having a make backend that much

its no globbing support that's a dealbreaker for me

[cloud iron]

they do scale well imo as long as project has very strong structure :copium:

maybe it doesn't scale that well... but i like writing makefiles tho

[vague knoll]

maybe not if you have as many deps as the average node or rust project

yeah they are elegant

[cloud iron]

yes about that, frick dependencies

[vague knoll]

idk what this person has against makefiles

[cloud iron]

like isn't this so nice
and i don't even need to do anything when i add new files

[vague knoll]

i'm using a makefile for aoc

i really just threw this together

i don't make use of LDFLAGS

it's always with -g

is delete_on_error even the correct name

well.. always use that thing whatever it's called

[cloud iron]

idk

[vague knoll]

it was so annoying when my codegen stuff had issues and only partially wrote stuff

because i was first echoing // THIS IS MACHINE GENERATED

idk maybe it's a skill issue

[cloud iron]

https://www.gnu.org/software/make/manual/make.html#index-removing-targets-on-failure

If .DELETE_ON_ERROR is mentioned as a target anywhere in the makefile, then make will delete the target of a rule if it has changed and its recipe exits with a nonzero exit status, just as it does when it receives a signal. See Errors in Recipes.

[fallen lily]

who needs a task runner

[fallen lily]

@ivory knot love?

[hollow oasis]

@ionic flare what if under uncouple -> der couple

new symbol

[cloud iron]

gradle is cool, i support gradle

[hollow oasis]

ununder actually works???

[quartz aurora]

Gradle for c++ sounds cursed

[hollow oasis]

im going insane

[cloud iron]

but groovy gradle tho, i don't like kotlin gradle

[cloud iron]

it's doable

[pale stirrup]

used for android pretty frequently actually

[hollow oasis]

im losing it

[cloud iron]

is this windings ?

[hollow oasis]

😭

[quartz aurora]

It's if wingdings was a proglang

[fallen lily]

i didnt know @pale stirrup made a programming language

[vague knoll]

i want to sleep

howw...

[quartz aurora]

Don't

It's illegal

[vague knoll]

i'm dividing by 10

[pale stirrup]

day 2 in 4 hours and you're still not done

[cloud iron]

just do a little xor eax, it'll be nice

[vague knoll]

i've got the solution i just wanna print it

[fallen lily]

@vague knoll would you consider using godbolt cheating to do this

[vague knoll]

no

[fallen lily]

evil

[ivory knot]

true

[fallen lily]

what does this even mean

how is a float even being used here

[vague knoll]

lol my part 1 solution immediately worked for part 2

😭

[fallen lily]

how

[hollow oasis]

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

[vague knoll]

because part 1 confused me and i made it harder than it needed to be which coincidentally was what they wanted for part 2

[cloud iron]

what the cursed thing did you do

also my final solution after having cleaned up my horrible p2 code

[vague knoll]

I should say, my initial part 1 solution immediately worked for part 2

my part 1 solution needed to be fixed so it actually worked for part 1

[cloud iron]

that makes more sense

[fallen lily]

swapped to fmtlib and things work fine

[frigid socket]

@fallen lily fix my solution

[fallen lily]

send code

[frigid socket]

https://git.nin0.dev/nin0/aoc-2025/src/branch/main/1

[fallen lily]

were you not able to get p1?

there is no p2 code?

[frigid socket]

i got p1

yes thrre is p2 code

Satan can’t read

actually my fn name is misleading

[fallen lily]

i only see p1

evil

[frigid socket]

it solves 1 and 2

[fallen lily]

split into 2 fns

[frigid socket]

look at Dial.swift

[fallen lily]

using a class for this is insane

you just need 2 ints

[frigid socket]

true

@fallen lily choose tomorrow’s lang

[fallen lily]

||https://github.com/sadan4/AdventOfCode-kotlin/blob/main/src/main/kotlin/solutions/y25/d1/Code.kt#L47-L71|| my p2

dont worry, you can't understand it anyway

[cloud girder]

Code.kt: Lines 47-71 - :warning: Zero width spaces present
||```kt
override fun part2(input: TInput): Any? {
var cur = 50;
var zeroCount = 0;
val parsed = input.parseInput();
for (_i in parsed) {
var i = _i;
if (abs(i) >= 100) {
zeroCount += abs(i) / 100;
i %= 100
}
val old = cur;
cur += i;
val new = cur;
when {
// noop
old % 100 == 0 -> {}
new % 100 == 0
|​| new / 100 != old / 100
|​| new / 100 == 0 && new.sign != old.sign -> {
zeroCount++;
}
}
}
return zeroCount;
}

[fallen lily]

HOW ARE THERE ZERO WIDHT SPACES

[frigid socket]

inconsistent semicoloning

Satan must die

Sadan just got Slimed by Nin0.

@fallen lily

listen

[fallen lily]

never

[frigid socket]

i remixed

yk

DJ NiN0

[fallen lily]

wait

i never pushed the better code

[cloud girder]

Code.kt: Lines 43-67 - :warning: Zero width spaces present
||```kt
}

@UseFile("./input.txt")
@Solved("6289")
override fun part2(input: TInput): Any? {
var cur = 50;
var zeroCount = 0;
val parsed = input.parseInput();
for (_i in parsed) {
var i = _i;
if (abs(i) >= 100) {
zeroCount += abs(i) / 100;
i %= 100
}
val old = cur;
cur += i;
val new = cur;
when {
// noop
old % 100 == 0 -> {}
new % 100 == 0
|​| new / 100 != old / 100
|​| new / 100 == 0 && new.sign != old.sign -> {
zeroCount++;
}

[fallen lily]

||https://github.com/sadan4/AdventOfCode-kotlin/blob/main/src/main/kotlin/solutions/y25/d1/Code.kt#L43-L67||

[cloud girder]

Code.kt: Lines 43-67 - :warning: Zero width spaces present
||```kt
}

@UseFile("./input.txt")
@Solved("6289")
override fun part2(input: TInput): Any? {
var cur = 50;
var zeroCount = 0;
val parsed = input.parseInput();
for (_i in parsed) {
var i = _i;
if (abs(i) >= 100) {
zeroCount += abs(i) / 100;
i %= 100
}
val old = cur;
cur += i;
val new = cur;
when {
// noop
old % 100 == 0 -> {}
new % 100 == 0
|​| new / 100 != old / 100
|​| new / 100 == 0 && new.sign != old.sign -> {
zeroCount++;
}

[fallen lily]

guh

is the bot stupid

[fallen lily]

cpp

@frigid socket you love c++ path concat operator

[pale stirrup]

||https://github.com/wingio/advent-of-code/blob/2025/aoc%2Fsolver%2Fsrc%2FcommonMain%2Fkotlin%2Fsolver%2Fsolutions%2FDay01.kt#L13-L19||

||https://github.com/wingio/advent-of-code/blob/2025/aoc%2Fsolver%2Fsrc%2FcommonMain%2Fkotlin%2Fsolver%2Fsolutions%2FDay01.kt#L21-L33||

[cloud girder]

aoc/solver/src/commonMain/kotlin/solver/solutions/Day01.kt: Lines 13-19
||```kt
part1 {
var current = 50
turns.count { turn ->
current += turn
current % DialNums == 0
}
}

**aoc/solver/src/commonMain/kotlin/solver/solutions/Day01.kt:** Lines 21-33
||```kt
part2 {
    var current = 50
    var count = 0

    turns.forEach { turn ->
        val prev = current
        count += abs(turn) / DialNums
        current += turn % DialNums
        if (prev != 0 && current !in 1..<DialNums) count++
        current = (current + DialNums) % DialNums
    }
    count
}
```||

[hollow oasis]

im going insane do i actually have floating point precision problems

oh my god i cant read

no this is stupid phrasing

[pale stirrup]

where would floats come into play

[molten bolt]

Doing advent of code for the first time

im nervous

[pale stirrup]

why

[frigid socket]

im winging it

ill probably vibe code d1p2 @molten bolt

oh jkjk

i did use AI to generate some example inputs and solutions @pale stirrup

yk

[fallen lily]

this seems fast enough for me

oh

im just stupid

[ionic flare]

under un

Okay

Der

Okay

[plucky wind]

google sheets
p1:
||```cpp
=REDUCE("50,0",split(A2,"
"), lambda(t, v, let(r, index(split(t,","), 1), count, index(split(t,","), 2),
distance, iferror(find("R",v),-1)*regexextract(v,"LR"),
newr, mod(r+distance, 100),
join(",",newr, count + (newr=0))
)))

p2:
||```cpp
=REDUCE("50,0",split(A2,"
"), lambda(t, v, let(r, index(split(t,","), 1), count, index(split(t,","), 2),
    dir, iferror(find("R",v),-1), distance, dir*regexextract(v,"[LR](\d+)"), 
    newr, r+distance, zero, if(newr>=100, floor(newr/100), if(newr<=0, not(r=0)+floor(abs(newr/100)))),
    join(",", mod(newr, 100), count+zero)
)))```||

[fallen lily]

c++ my beloved

[fallen lily]

cursed c++ p1&2
https://github.com/sadan4/aoc-cpp/blob/main/src/2025/day1/main.cpp

[terse edge]

hi

[fallen lily]

I love not being able to do AOC until tomorrow