quants-n-traders

[neon mirage]

What good teams are there at 2Sig

[empty jewel]

Thoughts on taking this graduate-level topics class at my school (offered both fall & spring)?

[neon mirage]

I took a class similar to this and it was really interesting. Mainly if you wanna do something in ml

[empty jewel]

Yeah I’ve never really done CUDA programming and way back in the day as a high schooler I did research on developing some numerical analysis algorithm which my mentor basically helped improve with parallel computing techniques

since it was presented at a high performance computing related conference i think it’d be fulfilling, both retrospectively and prospectively

[deep cargo]

How does team match work

[neon mirage]

Im not too sure, im pretty sure you have your pick of the litter to an extent. They ask you what youre interested on and try to match you best they can afaik

Im just curious which teams are the best/most interesting. I dont rlly wanna say im interested in something that will place me in a horrible team lol

[storm gazelle]

Has anyone done the Jane Street 2nd Phone screen yet?

[faint glen]

Which quant firms check for your transcript?

[fossil pond]

5r

And JS

[small mantle]

Got offer like 1.5 wks after

[lavish marten]

how to get quant with no prior coding experience?

[long solstice]

is it better to renege mlp, two sigma, or akuna 👀

if i renenge either does taht affect my chances of getting into other firms?

i have those offers, but am waiting on a better company that will take a while fr

[midnight scroll]

why wouldnt you sign the best offer?

like I see where you're coming from, but the whole point of signing and reneging is for security

if you're going to sign the worse offer just to renege, at that point don't accept all three if you're that confident

take the too sigma

[neon mirage]

Did you sign all 3?💀

What’s mlp

[untold prawn]

millenium?

[neon mirage]

Oh icic

[clear phoenix]

my little pony

[neon mirage]

I deadass looked it up and that’s what showed

[ocean bloom]

If it’s swe two sigma is the best option

[uneven goblet]

@quaint wadi did you join the plasma lab 😂

I might be seeing you soon. lol, sry for the abrupt msg, but I think I saw my prof adding you to the lab slack and etc.

tbh you might be on your own in terms of learning CS related things, but the prof you got is a really nice person.
I’m personally glad to have someone who knows how to code joining the lab.

[uneven goblet]

Hhh, ig I read too many detective novels. But it’s so nice seeing you in person tho! Will move this to dm so I don’t spam the chat.

[gloomy coral]

prof paul?

[uneven goblet]

Yeah

You know her too?

[gloomy coral]

yeah i asked to join her lab over the summer but she was full

she messaged me like 2 weeks ago if i was still interested in joining

seemed like p hard stuff tho

[uneven goblet]

Are you a CS major? I’m actually surprised that people from CS are interested in plasma physics

[uneven goblet]

Depends on the project you want to do I think!
It could be generic code development if that’s what interests you. However if you want to dig into stellarator optimization, there’s some more interesting math stuff there.

There is also coil optimization stiff that’s a bit more “applied.”

Plasma physics often boils down to E&M + some fluid dynamics, so it’s not really that difficult or fancy of a subfield of physics in this regard. However, prof Paul works on stellarators, which is structurally more complex than tokoma machines, and she does a lot of work on curvilinear coordinates and symmetries and distributions and etc

lowkey she is as much as an applied mathematician as she is a physicist

[uneven goblet]

Yeah, you were a bit late when you emailed her during the summer I think. SEAS summer research application starts latest at the spring; there just happened to be a person she just hired.

[gloomy coral]

yeah i am

she gave me this like optimization task for the summer

like optimizing some code to make it run faster

parallel processing

i interviewed w her a while ago but she decided to go w someone else

before the summer

[uneven goblet]

Mind telling me a bit more about why you decided to apply for her lab?

[gloomy coral]

i was just going down the seas list and hers was like the last one open 💀

[uneven goblet]

We got a number of CS students who wanted to join, I’m curious

[gloomy coral]

the description was also like experience in coding

[uneven goblet]

ic ic

[gloomy coral]

i just applied to the labs that needed some sort of coding background

LOL

are u a grad student

[uneven goblet]

I lowkey wanted she to hire more CS people you know

Yeah, tho I just graduated.

Would you mind if I DM you

[gloomy coral]

yeah sure

im going to be sleeping soon tho

i have a midterm and interview tmr

[uneven goblet]

Ah no worries! Focus on your midterm and interview first!

I just wanted to ask you what part of code you were handed to optimize

[gloomy coral]

tyty

ah i dont remember the specifics but it was something about particle modeling iirc

[uneven goblet]

I think I complained so many times to her that we need more people who know how to code properly hhhh

Tracing or interpolant?

[gloomy coral]

she mentioned that last summer there were a couple of summer ppl that sped it up a lot

and i would be working on top of their previous work

[gloomy coral]

uhh im not sure

[uneven goblet]

I think you got my old project

Lol…. I must have complaint too much that she thought I didn’t really want to do the work….
Man, she always overthinks things too much…

[gloomy coral]

😭

she made it sound v impressive

like u did a good job

[uneven goblet]

She is just way too nice

… idk…

I still maintain the position that we need you guys, the actual CS people, in our lab

the only thing is that I feel you guys are usually interested in other more popular topics like ML and the likes

[gloomy coral]

yeah those were filled p quickly

from the summer at seas thing list

[uneven goblet]

You will get them! I’m sure of it.

[gloomy coral]

yeah i kinda slacked on recruiting last year

so i was looking for labs to work at over the summer

[gloomy coral]

tyty

[uneven goblet]

Are you interested in robotics?

You can also check out Barnard’s CS labs

Also I heard they are hiring new professors. So potentially new labs opening up

[gloomy coral]

oh yeah i heard of the a^2r lab but they were also full

[uneven goblet]

For real????!

[gloomy coral]

the prof took like 50 ppl or smt crazy

yeah

it was within like a week too

[uneven goblet]

😤yeah… he was a McKinsey guy and he got the super power to delegate 10 teams at a time

I honestly don’t know how he managed it

But usually he will get you a paper within a year

So if you are interested… definitely give it a try. Downside is that he is also a bit hands off

So always have a backup just in case your project wasn’t going well.

[gloomy coral]

yeah i assume he wants to pump out papers bc he's new

[uneven goblet]

I will keep an eye out tho. He is on the hiring committee I heard.
If I get the wind of who the new professors are, I will let you know.

[gloomy coral]

o tyty

what's the hiring committee

[uneven goblet]

Barnard is looking for new CS professors

I will dm you the screenshot

[gloomy coral]

o wow

he just joined and he's alr hiring

[uneven goblet]

Ikr, it’s insane

[long solstice]

i realized i wrote thsi really horrible, i meant is it better to renege mlp FOR two sigma. mlp offer expires in 4 days
but i just finished two sigma process, but they said itll take up to 3 weeks for team match

also its swe for all of these sorry for not specifying

[tidal olive]

are you sure?

[neon mirage]

Is this for NG or intern

If NG then yes, if intern then maybe take the one who has better conversion rate

[midnight scroll]

yes I would renege mlp for too sigma

just sign it for now and worry about it later if u actually get two sigma offer

[tidal olive]

for?

[sleek smelt]

anyone got any tips to prepare for imc quant research. can find absolutely nothing online

[kindred basin]

did u make it past

[supple shoal]

no

[kindred basin]

unf

[main totem]

Anyone kno how long to hear back from citadel onsite?

[storm coral]

its perfect for u though you can work 120 hour weeks

[low vault]

word on the street is that headlands tc is crazy but you'll die working there

max dama is a cool guy though

[low vault]

man lives for the grind bro

[main totem]

Bump on this?

[somber oriole]

It can be up to 2 weeks. Usually takes awhile from what I've seen, like at least a week

[trim hare]

idk

if you double your salary vs what you'd normally be gaining

you're basically working two years worth in one

[sinful kernel]

ur lazybud

jk

[trim hare]

depends on what other options you have I guess

if u can choose an easier 200k job thats like 30-40 hrs a week i guess then its an interesting decision

I just think its always better to aim for the higher starting point and move down if required. If you take high paying, hard to get job, it is easier to move to a less intense, lower paying position. If you take an easier job, there's no guarantee you'll have the opportunity again

exactly, the 200k light job is the guarantee, whereas the 400k quant job is harder to get

yeah idk if its weekends then idk if thats worth it

just more intense around deadlines

ya thats fair

i think the other big value prop i see is skill set value is higher w quant jobs

like you could end up just doing web dev or some other easily replaceable stuff at any big tech company

which means you're more prone to layoffs outside of your control

harder to replace quant

i wish i had enough money to be materialistic

soon hopefully

the pain of going from tech intern income to no income as a student

terrible

wdym hrt?

like hudson river

are you in quant?

congrats

[floral salmon]

congrats

[leaden geyser]

Does anyone know what types of questions Squarepoint Capital asks in their tech rounds?

[vocal drift]

if anyone has taken imc qt final pls lmk

[low vault]

What’s TQD

Oh

I have enough of those already hahaha

Dang this is the first time I’ve seen someone assume good things from an anime pfp

U 2 Mr meow man

[tranquil wagon]

What kind of server

[rose holly]

its not what it used to be

[sleek smelt]

Someone please help me with stuff to prepare for imc quant research. Couldn’t find anything online

[low vault]

Mfw intl

[fresh swallow]

lol

yeah the job that involves a shitton of social interaction is more GPTable (longterm) than the one where you sit at a desk all day for sure

[rapid arch]

You dont think QRs communicate with QTs and Devs? How tf would u deploy new strategies…also dude PE/IB is excel monkey say ur cope

[fresh swallow]

how would I be coping? I'm a dev at an hft lol

The job will never go away though

there'll always need to be some juniors to train

and someone who gets into it now, will be out of the GPT-able part in 10 years

From a dev perspective, you're doing pretty much the same damn thing for your whole career, and once you're 50-60 they'd rather replace you with a new kid fresh out of college. If you do IB->PE once you're 50-60 you're entering the peak of your earning potential and raking it in. I'm not sure how applicable that is to qr/qt jobs though.

[rapid arch]

I thought u were the other weird racist dude from b4 nvm and forget the cope comment. What hft r u at? Also im not talking about execs im talking aboht the grunts at IB/PE which is the wide majority whose tasks with one month of tensorflow could be automated

[fresh swallow]

I'm at a fairly mid tier one

[rapid arch]

Nyc or chicago based?

[fresh swallow]

nyc

[fresh swallow]

Theoretically, they could be

But there are major information security laws around everything that you do as an analyst at an IB firm

Which could be a hindrance

[rapid arch]

Side note dm plz

[fresh swallow]

and these older guys need someone to boss around

Then after a few years these grunts move up or fan out to cushy business jobs in normal companies

I'm not saying one is necessarily better than the other, but I think a lot of people in high school/college (like I was) are blinded by the salaries of tech/quant jobs and don't give enough consideration to the long-term career progression and lifestyle that comes with a job

[sinful kernel]

so is like long term career prog better in fincance?

[zenith panther]

lifestyle of tradfi doesnt sound appealing at all

tbh

[fresh swallow]

imo yes

[sleek smelt]

Anyone doing options 201?

[midnight scroll]

For spring cohort only

deadline for fall was nov 7th

[tranquil wagon]

How so

[fresh swallow]

For the reasons I described above. Old business people are viewed as having accumulating, valuable knowledge. Old tech people are viewed as having outdated knowledge about legacy systems

[peak egret]

anyone do 2sig oa

is there any point in doing it this late

[sinful kernel]

is citadel leadership technical or only behavioral?

[peak egret]

no ik lol

im just bad at dp

[sinful kernel]

citadel secrutiesi

didnt specify what specifically within citsec tho

🙏 pls be only behav

im lowkey not a genius

also anyone like know how much the top 5 accomplishments matter

i deadass am not that impressive

mos of mine are not technical

but no like leetcode tho right/

like OS shit?

[hexed barn]

For swe or qr

Is 2sig swe even out to public

[peak egret]

swe

yeah its been open for a min

[fresh swallow]

practice

[sinful kernel]

which team(s) did u interview with?

[peak egret]

very true

[ocean bloom]

Anyone know how two sigma new grad package is looking like this year? Is it cracking 300k in total tc?

[neon mirage]

FY yes

It’s like ~250 after

[ocean bloom]

Thanks

you think a 70k pay cut from citadel is worth the wlb

[neon mirage]

That’s honestly up to you, how much do you value WLB

[fresh swallow]

Depends how bad the team at citadel you'd be joining is

imo

[neon mirage]

2S you also don’t know what team you’re on until like 3 months begore

[ocean bloom]

As long as I’m not doing like 60hr weeks I think I’ll be god

[neon mirage]

Not at 2sigma but prob at citadel you prob will

[ocean bloom]

I was thinking the same but you can always go from from quant back to tech after you rack in the better tc for the first 2-4 years

[foggy apex]

@restive aspen two sigma has leveling equivalent to google and most faang

so u wouldnt rlly be downleveled

[lethal cape]

@hardy crown definitely not auto. I’ve applied like 6 times total and no OA 💀

[untold prawn]

i don't even think it's open anymore it was out a long time ago iirc

[untold prawn]

i think this thread might be helpful for you: https://www.reddit.com/r/csMajors/comments/rfgtxo/two_sigma_vs_meta_summer_2022_swe_internship/

back when that subreddit was useful

[broken thorn]

a simpler time

[sinful kernel]

do all citsec leadership calls have coderpad link attached or is this a sign im about to get a tech

[hexed barn]

Internship or ft

[sinful kernel]

no fucking clue lmfao

i started process w OA in like mid october

what's their total hc?

[untold prawn]

intern

[sturdy bison]

What to expect for HRT superday Algo dev internship?

[steep vortex]

has anyone done the Optiver OA? What should I be expecting?

[untold prawn]

isn't their hc filled?

app released so long ago

[main totem]

Anyone done two sigma swe second round?

[small mantle]

Anyone know abt old mission winter qt intern process

[lethal cape]

Has anyone done millennium qr phone 2

[sleek smelt]

How long to hear back after imc 1st round technical

[thin bramble]

you might get a coderpad but never use it

it is not possible to tell

you also could get a tech

[tawny compass]

If anyone has interviewed with The Voleon Group before, pls dm or ping me here :) Just have a general question about the "Technical Discussion" round

[left sentinel]

Has anyone interviewed at BAM for AI Research Intern?

[sinful kernel]

i hoe not 😭

anyone got MJ intials for citsec leadership

frfr

[sinful kernel]

what type of work/tech does citsec do other than Low latency? im tryna make sure i say the right shit during my call lmfao

[pallid berry]

did u intern at cit? or external ng?

[broken thorn]

if u had a believable american accent you would be richer than all of us

a shame

[broken yarrow]

did citadel intern 2025 hit headcount or is it still worth applying rn

[open cedar]

Why would you want to be citadel intern if you can start earning 100k in 72 hours 🤑

[muted bear]

This is really cool, is there anywhere i can find this for other firms like js/hrt/etc

[sleek smelt]

Quant intern

[plucky holly]

don't do quant roles, they make you work overtime

especially citadel, vanguard and the others

[storm coral]

cit made these

[muted bear]

well yeah I figured, jw if you had others from info sessions or something lol (assuming thats where this is from)

[storm coral]

na they just sent w interview req

[muted bear]

ah ic

nice

[plucky holly]

If you value your sanity don't go into that company

[storm coral]

no

[zealous crystal]

^^

[fresh swallow]

CitSec hired Herb Sutter

brazy

[plucky holly]

check glassdoor

70hr work weeks are possible with em

[storm coral]

someone asked me a question between our messages

and then deleted

[rugged cedar]

if anyone took/has info on optiver chicago swe intern final, i’d really appreciate if i could dm about it 🙏

[sturdy bison]

How long does it take cit sec to answer on average after first phone interview for QT Internship? I think mine went well (albeit not perfect)

Haven't heard in a day

[heavy wren]

has anyone taken sig swe technical first round and passed mind if i dm u

[tame idol]

Generally takes a day or two

[main totem]

Anyone gone thru two sigma swe process? I have some questions

[sinful kernel]

prolly not unless u renege?

[sinful kernel]

that u turned them down??

why lmfao

what did rec say exactly

[storm gazelle]

@nimble topaz how was ur JS 3rd round. I have it coming up for QT but not sure what to expect

Oh damn ok

[rich hare]

is undergrad research in math (algorithmic graph theory) helpful if I want to move towards quant

[broken thorn]

yes

[rich hare]

ive recently become really interested in math so i guess ill do it

[valid sand]

ng?

[clear phoenix]

for quant research yes

[ocean bloom]

anyone know if radix does nyc for ng?

[storm gazelle]

If anyone has done JS round 3 for QT internship 2025 or even 2024 pls hmu

[stoic stump]

also for JS please hmu for TDO ng if you've done the 3rd round

[weary path]

brother for an avg swe role at these firms you are better of at JS (cant speak for hrt)

[terse barn]

i can’t wait to graduate middle school!

[weary path]

😭😭

[tacit cairn]

anyone willing to help with HRT OA for alg developer?

[clear phoenix]

yes, i was held back a few years.. my plan is to become quant.. skibidi toilet

[open cedar]

@wintry leaf is they/them

[wintry leaf]

got so many internships nobody believes im one person

[zenith panther]

orz

[storm gazelle]

Just heard back from the Old Mission Junior QT Microintenship. Has anyone else?

OA is auto and I got something after that

[storm gazelle]

I don’t remember gang. I think I did all or almost all

Nah bro j give it more time fr

[wintry leaf]

who is irz

[stone vector]

get yourself an anime profile picture

aura boost

[untold prawn]

same :(

[deep cargo]

ur too good for them

[storm gazelle]

A semi target or target school, CS/Math double major, join quant/trading on campus or something similar with relevancy, ML personal projects, and undergrad research if possible

[deep cargo]

i think he's asking more about passing the oas than passing screens

but yeah all this is right fs

[storm gazelle]

Ohh yea ur right fs. I’m a dumbass lol🤣💀

But for the OAs just grind prob and stat questions.

[storm gazelle]

Yea I gotchu. The green book helped me as well as some online stuff. I can’t remember the name but it had a lot of prob n stat questions.

[strange loom]

Anybody have some good resources for not getting screwed when buying a used car?

probably the wrong channel to ask but I figure someone here has a trick or something

[forest cobalt]

quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant quant

[fresh swallow]

ask your buddy whose relative is a mechanic if he can check out the car with you

Most people in this channel prolly too ivory towered to have that tho ig

[sturdy bison]

Yeah

[zealous crystal]

Anyone done voleon onsite for swe

[frigid aurora]

could you please see dm, thanks

[stable mist]

how much does your school matter when wanting to become a quant

[vernal compass]

guys how is millenium swe as an intern

im not from an ivy, am i likely to pass jump and deshaw resume screen after or am i still ngmi

[storm gazelle]

It honestly matters a strong amount imo.

[stoic wigeon]

ive seen lots of ppl at jump from like t10 cs

but deshaw lowkey rough

[stable mist]

so basiclly if im not in an iv leauge school its gg

[storm gazelle]

Not necessarily but kinda yea. U need to be a t10 or t15 school. Personally my school is public t10 for CS. Very prestigious and has a lot of clot but still not enough for real. We’re semi target so I get “by”

[midnight scroll]

If you have the prior experience it'll make up for school

Don't really think my school is a target, but theres a handful of jump people every year

Friend got reachout from just having prev @ amazon, T20 (emphasis on close to the 20 lol)

Know another who got reachout from de shaw as well. It's a combo of luck and prev experience. School certainly is a big factor but I wouldn't say it's joever

[rose holly]

omc

[untold prawn]

outside of t10 cs or t20 overall it's borderline impossible but it has been done

[untold prawn]

it's def not just a little bit harder, you're like one of two ppl ik of who've done it

i mean that's still a rlly low number relative to the number of ppl outside of the normal group

also those 7-8 ppl are w/o a doubt exceptionally talented and/or hard-working

yeah true it's kind of a chicken or egg situation so it's hard to say fs

[lethal apex]

True, get iq gapped

(Half of ivies are legacies or athletes)

[fresh swallow]

There's a dude in this discord who went to stony brook and got to deshaw final round

Def possible

although that's swe not quant

[empty citrus]

Anyone interview for python at HRT?

[zenith panther]

ik someone from stony brook who got hrt swe

[empty citrus]

how far did you get?

what typa qs did u get asked in each round?

[lavish marten]

this is not surprising at all

[main totem]

Anyone gone thru two sigma swe process?

[sinful kernel]

how long does it take to hear back from citsec after leaderhip

[cunning charm]

did yall end up using the coderpad?

[sinful kernel]

nah all behav

[sand willow]

hard. but fun

[untold prawn]

does any1 know if hrt does offszn?

[hardy agate]

Does anyone know anything about the process for a Quantitative Developer at CC&L? (Please ping me if you do)

[soft fossil]

they dont, its chicago only q~q

[sinful kernel]

a phd in statistics from MIT

[strange loom]

isn’t PhD a bit unnecessary in reality tho

my perception is that it’s just more of a signal of IQ or smth

[faint glen]

Does anyone know what the gpa cutoff is for 2s?

[thin bramble]

Try get into rentec without a phd

[astral mauve]

I got interview last year with a 3.5

[faint glen]

Ok, thanks for letting me know

[thin bluff]

Does JS have a cooldown period?

[strange loom]

Nobody is getting into rentec regardless

[neon mirage]

I don’t think they check GPA?

[thin bramble]

[tranquil wagon]

Not with that attitude

[thin bramble]

I'm pretty sure that the discussion is of QR roles

[low vault]

They don’t for intern

Technically you can’t reapply for four months but like … there is literally no reason to anyway

[thin bluff]

Thanks!

[tranquil gale]

what should I expect from a codesignal from hrt?

[minor roost]

does anyone know if jump trading calls to reject after swe onsite?

[fringe roost]

yes

[upper flax]

is there a github repo for all the quant/swe role at quant firms?

[tranquil wagon]

I’d be surprised if they aren’t already at hc

[queen pendant]

Green book is the green book for qr

They also ask prob questions

For conceptual/modeling qs read esl

[hazy hawk]

Do you need qswe intern to get qswe FT?

[rugged rampart]

I heard good things about Hatcher too

[hoary pond]

oh damn, why?

[main totem]

Ping me

[ocean bloom]

damn really? i see entries on levels for NYC ng

[soft fossil]

It’s fake I think, at least that’s what the recruiter said

[soft fossil]

He said after 1-2 yrs u can move to nyc maybe

[ocean bloom]

i see makes sense

[zenith panther]

no

certainly harder tho

[tardy nimbus]

has anyone gotten through a few citsec trader rounds?

for intern btw

[hexed plank]

Hello guys I am second year undergrad wishing to make my career in quant I want someone to help to give me roadmap how to become one if I am starting from python.

[candid cliff]

Is sig discovery day oa auto

[tranquil wagon]

i think most of the top firms fill up early but maybe some of the lesser known ones

[rapid mesa]

If ur cracked

They’ll hire u

If ur just regular smart no

[hexed plank]

Can someone really help

[pale pine]

hi

im a freshman at iit (India)

i want to get started in quant

i started doing cp 3 months ago and rn im rated around 1300

ive okayish math experience but still will look for improvements or suggestions in that

how do i get started in quant

like any starting point
i do know cpp but yes

😭😭brrrruuhhhhhh

why tho

[vernal hornet]

anyone interview with gqs platform engineering

are interviews just leetcode

[latent flame]

@robust bone tamil?

[robust bone]

Yea

So is hyper

[tardy nimbus]

can i also dm you?

[willow cliff]

Here's the roadmap: apply to hundreds of quant roles from a non target --> get rejected by all of them --> find a job in something else that pays less --> hate ur job and be poor --> unalive urself

[lavish swift]

anyone have any tips on how to prep for confidence interval type questions

[zenith panther]

its probably better to ask in a different server

recruiting in india is very different than recruiting in the US

[stoic wigeon]

yeah, just harder to stand out

[neon mirage]

Have some motion

[tender zodiac]

@split lintel ^

[split lintel]

Thank you

[sleek smelt]

Anyone done Jane street trading phone ?

[native pumice]

disagree

take pride in ur work and good things will come. non target does not mean rejection

[stoic wigeon]

when did i say that it does 💀

[native pumice]

You are just close minded

Quant is a meritocracy this has been known

[near nymph]

quant is a meritocracy like being an ioi imo winner or 3x neurips publisher is a meritocracy 👽

[lethal apex]

Skill issue

You should’ve known about the quant application process since you were in elementary school like the rest of us

[native pumice]

Show me one job posting that says "we only hire from target schools" and I will admit I'm wrong. Otherwise I am going to die on this hill

[pastel blade]

Bro.

[neon mirage]

They literally hve “what school do you go to” drop downs and the only listed are T10 and “other”

going to a target school is a massive advantage. Look at the school demographic of their employees

[limpid coral]

anyone know what to expect from a de shaw interview?

[strange loom]

Going to a good university is just another stupid game to play anyways

Can be optimized if you’re autistic enough

Or you can just $ for it

[zenith panther]

💀

5R literally didn't let you apply before if you didn't go to a target

😂

[native pumice]

I just took a quick look at their job postings and it allowed me to select a non target

[still sapphire]

Hey folks does anyone have any info on Citadel Quant developer interviews? Or could point where to look at? Thanks a lot!!!

[lucid shard]

i mean no shit ofc no company will say that

it's just that if you don't go to a target it's much much harder to standout

5 rings for example ^

[rich hare]

could you get that target prestige for quant by doing a masters from target

Some schools have small class sizes

Even for masters

[neon mirage]

Does school matter as much once you have industry experience at quant?

[rare oasis]

Hi guys. I’m highly interested to get into quant and I’m an absolute beginner. Could someone suggest how do I start?

[sleek smelt]

i think this is more of "correlation not causation" scenario.

[peak egret]

"seeking applicants from exceptional and presteigious academic backgrounds"

ive literally seen postings where they explicitly say top universities or whatever

but dont let that stop u or cope tbh

even if its much harder you can still do it

belieb

[peak egret]

dont let your current situation dictate your future success 🗣️🗣️🗣️

[cerulean bloom]

I know people in quant without going to target schools. Imo The top schools send more to quant bc they have more of the students with the achievements they’re looking for. It’s not really the school. Like MIT has almost all the top math and cs olympiadists. But the ones going to non target schools are still landing quant.

And there’s tons of MIT students struggling to land anything quant. The ones who don’t have a crazy resume in Olympiads are struggling. And pretty much everyone going into MIT already has crazy resume and connections. So I wouldn’t say school is the sole decision maker

[midnight scroll]

Millennium flat out used to have their job listings posted via handshake

And depending what school you went to, only some roles were available

(Or none at all)

Two Sigma dropped their application links earlier? (or not at all) via handshake this year as well depending on the school

Now I will say most firms won't flat out not let you apply if you don't go into a target

but 1 mf getting in vs the dozens from a T5 clearly show that yk, school has an impact. If you go to a non target you're going to need something exponentially better than those that do go to targets to override the fact that you go to a shitter school

[midnight scroll]

Nah. If you go a top school you'll get reachouts for having no experience. There's plenty of folks I know who get reachouts to firms simply because they go to a top school. Very few prior experiences or any other differentiating factors between them and those that don't go to a top school.

Trust me, the people from MIT getting into quant aren't getting in because they all are an IOI medalist lol

[broken thorn]

i know a guy from harvard

its crazy how easily you can break into new fields

"i wanna try investment banking, let me hit up some harvard alums on linkedin"

[fresh swallow]

The biggest scam of large state schools like Michigan is when they tell you how strong the alumni network is because they have 1 million living alumni or something

The alumni network is actually worthless because there are so many people vs a small school (like Harvard or whatever) where someone might actually care that you're an alum

[broken thorn]

good point

imagine caltech alum network

[vagrant rose]

isnt umich cs indirect admission though

[void sorrel]

If you’re in clubs the alumni network is helpful

[fresh swallow]

Lol I didn't find this out till I got there

Applied to the super competitive engineering school, took forever to get accepted, then show up and find out that the regular college has a CS program that's almost identical

[fresh swallow]

Clubs at Mich are a joke

They have full on admissions processes and unless you're one of those mfs that was an uber nerd in high school you don't get selected

^ True

I didn't get any reachouts but I had way better response rates from quant firms than tech as a swe

Maybe diff for qt/qr

[void sorrel]

It’s same for qt/qr cause the honors math department is T10

So it’s correlated to just general math as well

[fresh swallow]

Yeah I kinda wish I'd done more math

I hated the way they taught calc 2 too much to continue with anything more than what was required

[vagrant rose]

how are you finding the program

[fresh swallow]

I graduated already

Super competitive and elitist culture that pervades almost every aspect of student life

[fresh swallow]

Yeah I didn't experience anything like that

There are people who are chill but they aren't the majority

That's what I mean, like mfs just competitive as hell about everything

And they love to talk about how stupid kids are that go to MSU or whatever

[native pumice]

I'm still alive

Personally, I've interviewed at hedge funds like BW and I go to an absolute no name school in the desert. I know ppl here who intern at hft. I still don't think school matters. If you're qualified, you're qualified. No matter where you come from.

[strange loom]

thoughts on selby jennings? just got a reachout

figure it's auto because i don't have the yoe the pos is looking for

[neon mirage]

The argument is not “can you” it’s “how easily can you compared to those at T5”

[native pumice]

Ok thats valid

[fringe garden]

lol i have a friend on the team

umich?

[fresh swallow]

It's a club sport

Nobody getting a scholarship off playing ultimate frisbee

[untold prawn]

The difference is that the qualification cutoff is wildly different for people from diff schools

[broken thorn]

i feel like connections in academia suck

[strange loom]

nice, i've had too many recruiters call me asking for names of people

[broken thorn]

u network and get all these insane qualifications just to get paid 150k with 15 years experience

[strange loom]

and consulting

and being an entrepreneur if you want

[broken thorn]

do you get a percentage of grant money?

if u get a 3m grant does a % go ur salary

[strange loom]

if you get it alone, u get it all lol

but it's hard af to get grants

hmm yeah i could be off on that

i and a small team applied for a darpa thing and my percept was that you get the money QbyQ if things go well

?

[limpid coral]

anyone know? 😭

[haughty hinge]

Questions

[untold prawn]

i think when ppl talk ab easy mode they're referring to at least getting to interview stage

like wu said above he was able to get ints with no prev exp bc of his school

which is not possible from an ngmi school

insightful indeed

yeah ig i can't speak too much to qt but i've def seen ppl who actually go from 0 -> quant swe from HYPSM

no way ur doing that from a noname

yeah i'd absolutely be down to test it since idt many ppl have

unfort quant recruiting is like over lmao

maybe next year i'll do it

and report my findings here

[tidal olive]

those who failed to break in from a lesser school wouldn't have succeeded as a top school

diasgree, you would have more resources and opportunities at top school

to break into quant

[stone nexus]

yeah 0->quant swe is def doable at hypsm + top publics. the resume screen also isn't that bad for qd if you have decent awards (icpc/usaco, trading comps)

[midnight scroll]

Yes I mean getting to the interview stage

For qt it probably matters much less I agree

[stone nexus]

I got a qd offer this yr with 0 real internships (albeit not close to same tier of cit/opt/etc) from gt, only have usaco, prosperity, some systems projects + club stuff on resume.

unironically previous experience matters much more for bigtech than quant dev lol

passed 0 faang/unicorn screens 😂

[stone nexus]

my goat faraz @twilit bay

😭 true but it was the internship title lol

ah no I was just referencing some guy ik from hs on the list

also tbf at some places there is somewhat of a distinction? I know at cit some of the gqs swes are called quant engineers, and they work rly close w/ the qrs rather than typical swe work

[twilit bay]

dam

goat

[low vault]

personally i did your mom at usaco

is usaco more recognizable than <insert national olympiad here> e.g. is it better to put on your resume over your national olympiad

im not a camper on account of
a) not being american
b) being shitass at usaco until my last contest

[stone vector]

isn't that kinda flawed

don't recruiters forward resume to hiring managers

[peak egret]

welcome to corporate :)

[stone vector]

i thought these firms are all about finding the best talent

then why let the screening up to people who can't distinguish who the best talents are

[peak egret]

im sure theyre not clueless

but you also have to look at it from the perspective of having engineers actually take time to read resumes or whatever

their time could be better spent

its flawed, but if it aint broke

¯_(ツ)_/¯

[low vault]

lol i have icpc on resume alr

i thinkthats the most important

i mainly just thinking of what is good to cut and what isn't

cos idk if repeating contest awards really brings much value now that i have job experience to pad out the rest of my resume

oh i meant like

getting more than 1/3 on plat lol

maybe it's harder now idk

back when i was doing it plat would have like

1 okay problem

and 2 harder ones

[low vault]

i heard it's harder now idk (?)

i did usaco like 2020-2021

[stone nexus]

i have the opposite experience lol

[stone nexus]

it is

except for gold

the recent gold contests have been unusually easy, but plat/silver/bronze have gotten harder

https://codetiger.me/project/usaco/

[tidal olive]

hows that a cope, you dont know about MIT frats having all the question bank lol?

[fresh swallow]

If you want to get QT at Tower put that you know french on your resume

pro tip

This is true at bigger firms more than smaller ones ime

I was at a smaller firm and was able to get interviews at a lot of smaller (but very good) firms but not from the big ones besides citadel

[sour pilot]

i mean by "resources and opportunities" i don't think he means "cheating opportunities" LOL

but yeah mit frats do have banks, but if ur not in one of those frats of have a big network of other quant applicants, then you're still pretty much in it by yourself

[fresh swallow]

It's gotta be mad easy to get into a frat at MIT tho right

like how many non nerds are there in the whole school

[tidal olive]

that wasnt the point.

at better schools, you will have much better alumni network of people who went to firms and you will have more opportunities to get advise and resources in general

and better the school, smarter your peer group would be which greatly impacts how much you can improve your own game

[lethal apex]

half of the school is in a frat

[fresh swallow]

Yeah it must be incredibly free to get into one then lmao

[lethal apex]

Yea, doesn't really compare to southern frats or certain ivy tea/eating clubs

any SEC school and it's like applying to FAANG L6

[low vault]

Omg

I am code tiger #1 fan

Do you is know code tiger

The actual context for this is because I lack resume space

And I’m concerned about diminishing returns of putting overlapping achievements

FWIW I think once you have one contest achievement it’s not that hard to pick up more

😮😮😮😮

😳😳😳😳😳😳😳😳

lol wait I don’t think codetiger knows I changed my pfp

I mean I only really know him from DMOJ etc. and not really active there anymore lol

How dyk him I’m curious

Ah fair enough

Camper?

[low vault]

Ohhh rip

😔

[orchid ether]

I’m stranded at a slots only casino

What are the positive EV strats

[stoic wigeon]

50% on black 50% on red

arbitrage 🤑

[fresh swallow]

There are none

Why tf would you go to a casino without table games

[lavish marten]

anyone in cubist process

[dire arrow]

PE work is nothing like quant work

[lavish swift]

To be fair

[dire arrow]

But I still think it will get u ints

[lavish swift]

Apollo is mostly credit and they’re building out some quant teams rn

[dire arrow]

data sci at PE fs more relevant to hedge fund quant than amazon or smthn

but full systematic naw

whats the role titled

is it swe or data scientist

or MLE

[lavish swift]

Nah that’s j what they call their SWE

It’s like Goldman

All swe interns are tech summer analysts

[dire arrow]

Its like EDA and basic modelling

yeah makes sense, seems like +ev pick

thanks

[timid marsh]

U should sign IMC it’s the best

[timid marsh]

ANDURIIIIL

[cyan sparrow]

dude BAM is A tier if you're not interested in serious engineering

let him coast in nyc

with the BAM business analysts

@verbal ocean have u ever even worked at a quant? why r u in this channel?

Listen to Rift imo

thanks

[tranquil wagon]

I’d take Anduril over no name quant personally

Brand matters quite a lot for internships I think

It’s not one I’ve heard of and I am not completely oblivious to quant firms

I feel like it’s definitely nowhere near as recognizable as Anduril

Maybe it is big I’m just saying I’ve never heard of it and I am fairly active on the sweaty discord servers so I’m aware of more quant firms than the average cs major

I’m not saying it’s bad just Anduril probably gaps it

[cyan sparrow]

just say u don’t know ball

BAM is the best firm in Columbus circle

[tranquil wagon]

What is ball

[cyan sparrow]

There’s no comp

[white eagle]

Bro got tired of helping now he’s tryna throw peoples careers 😈

[dire arrow]

implement lasso regression without any external libs

r u talmat dev or trader or researcher

does anyone know what jane street insight programs acc do

will they guarantee me an int next cycle

[tranquil wagon]

This is a good one

I would maybe say implement some of std::string

There’s some interesting things like SSO and it’s a good way to test basic knowledge of move semantics and stuff

[tranquil wagon]

Oh also making it constexpr

[zenith panther]

BAM is one of the largest hedge funds out there

[tranquil wagon]

Ur one the largest cs majors out there

[zenith panther]

21B AUM

[zenith panther]

👎

i got cooked 💀

[tranquil wagon]

🍳

[tranquil wagon]

I’m not joking

When I look up what it’s like working at bam this is the first result: https://www.reddit.com/r/quant/s/evHz5z30xA

Also anecdotally they are less respected than Anduril in every circle I’ve been in

[fresh swallow]

Hahahahaha

[tranquil wagon]

Hahahahha !!!! So funny!!!!!

[fresh swallow]

One of the most well known hedge funds = no name quant

is a hilarious take

If someone wants to work in finance they should take BAM, if someone wants to work in tech they should take Anduril is the way I'd look at that choice

[zenith panther]

^

[keen ember]

can i dm (logistical question)

[lavish marten]

need quant!!

omg how to get quant!

[lethal apex]

for qt how risky are pod-based firms

I’ve heard things about firms regularly firing entire teams based on their performance

[stone nexus]

did u get this from carl cook's post? lmao

[fresh swallow]

That's kinda the whole point of the thing

It's like joining a startup

If they do well you can make bank but if they don't yeah y'all are gone

Also like if your alpha is bad then you aren't going to get much dev resources

(Personal experience as a core dev at a pod-based firm, we have some team that is always requesting features but they kinda suck so we mostly ignore them)

[lavish marten]

can i dm abt pod based shit

[fresh swallow]

Sure

[lethal apex]

Alpha = profit?

or just returns in general

Its kind of unclear to me whether the pods have their own expenses that also get factored in

[fresh swallow]

This is my understanding: A trading team will set expectations with the firm for the returns they will get at certain stages of the onboarding process

If they meet/exceed these expectations then they will be allocated dev resources accordingly

If they fail to meet these expectations then they will be de-prioritized in favor of teams who do

[stone nexus]

a really popular ex optiver team lead who posts ab c++ shit on LinkedIn a lot

earlier this wk he posted like the exact thing u mentioned

[fresh swallow]

It's also just an interview question that you're guaranteed to get at some point

[stone nexus]

oh yeah for sure

[fresh swallow]

If you've done cpp interviews for trading firms

[stone nexus]

stl knowledge is really important

and well

just c++ depth in general

proper practices

yeah

ur talking about the famous hft one right

[lethal apex]

interesting, sounds fun if intern, stressful if you’ve jist bought a 20k/mon nyc penthouse 💀

[stone nexus]

when a nanosecond is an eternity or something

[lethal apex]

Core sounds pretty interesting despite what people here seem to imply

[stone nexus]

but yeah he's really cool

[fresh swallow]

If you're paying 20k a month you're just an idiot

[stone nexus]

he brightens up my otherwise dog shit LinkedIn feed

[fresh swallow]

Unless you already have the money saved to pay it off for the rest of your life

This is not a stable industry

[lethal apex]

I want to hold big top floor parties don’t judge me 😂

[lethal apex]

Oh I’ve seen this

the optiver lectures are amazing

[stone nexus]

yeah it has like a million views on yt

[lethal apex]

picosecond performance boosts

[stone nexus]

or so

cppcons are really cool to see

[fresh swallow]

You study all this shit just to get on the job and need to use none of it because everything that is performance critical is maintained by like 5 guys

[lethal apex]

to be clear qt is nowhere close to qr correct? Or do they overlap at some firms

seems like qt is more front desk qr are the stats majors in the back

[lethal apex]

Heard the hft firms hire a painfully low number of hardware engineers

then if they leave, pay them to not work anywhere for some time

[hot mica]

No lol pods hire their own devs. Theres central infra and core services but main dev work is with your own guys

[hot mica]

The pods coming to u are discretionary pods i guess

[lethal apex]

P sure he’s speaking as a core dev

[hot mica]

U gotta be joking or clueless lmao

[hot mica]

Did u just ignore my next reply

[tranquil wagon]

Oh that guys great

[tranquil wagon]

Definitely not the first hopefully not the second but maybe

[lethal apex]

Yes

Are core devs mainly working on the market data receive/transmit infrastructure?

[hot mica]

Sweaty discord servers? Give some examples

You arent even in tqd lmao

[deep cargo]

Tqd

[low vault]

mans gatekeeping tqd

honestly I don't think bam is that well known

[hot mica]

Not well known to a bunch of rando swe interns? Yeah definitely not

[tranquil wagon]

What experience

Oh I thought you were saying the bam glazer gaps

Plasmatic 🔥

[hot mica]

@lunar thicket

Yeah andrew is nepo baby

Not surprising

U made me look up their past comments lmao bros getting ghosted all day long what experience 💀

Yep desco and radix getting railed by cubist teams

Believable

Cit gqs ft qr

Ask @lunar thicket

believe whatever lol 🙄

[lethal apex]

None of ya’ll do hardware so its cringe anyway

[tranquil wagon]

Does cit not do behavioral interviews?

Yeah true lol

[lethal cape]

Anyone interview millennium execution services intern?

[tacit cairn]

anyone willing to help with HRT algo dev interview?

[dire arrow]

yes

i hear a lot of mixed things

some glaze tf outta it and others say no name shitco

[lethal apex]

Half the people on cscd are fishing for info the other half are trolling

Just a chill guy trying to get radix

[fresh swallow]

They have their own devs but most of them also work off of our core platform

Even for our oldest teams that do the most of their own stuff, they still use us for some things

It may be different at your firm but this is how it works at mine

[fresh swallow]

This is a lot of it yeah

Market data, order entry, recon

risk

[lethal apex]

That’s cool asf, what’d you do specifically?

we can dm if preferable im not even in quant but just curious

[hot mica]

Besides core infra, the devs belonging to the pod do everything else. And theres also flexibility to do the end to end yourself as a pod so im just saying if they really wanted specific features their own devs would handle it unless they are too small or heavily discretionary pod with no devs

[hot mica]

Yeah i guess the way u talked about having depriority of dev resources was a bit weird to me (its true but u still gotta handle reasonable requests, they arent at your mercy). Obviously core is very important and pod devs dont change your code lol but they also do their own core stuff too

Not as mysterious because we chatting in dms buddy

You dont understand how qr job works and it shows

Sad to see ofc

[lethal apex]

Im cooked I thought kenny g was a rapper

[keen ember]

how are they supposed to do well if you dont build their requested features tho

[fresh swallow]

I mean a new team will get the features they request built

[ocean bloom]

is it worth doing google fall if im doing pdt in the summer or is it just a waste of time?

[fresh swallow]

Why would it be a waste of time

[ocean bloom]

because i wanna do quant ft and dont see myself returning to google ng

but name value ig

[fresh swallow]

Have you done quant internships already

[ocean bloom]

nope

[fresh swallow]

So how do you have any idea lol

You might hate it

Just keep both

[ocean bloom]

good take

im alr ex-faang tho

[fresh swallow]

It's money and another name + more exp on your resume

[keen ember]

wdym? so u only build it if it also benefits a high-performing team?

[ocean bloom]

🤫

[lethal apex]

You might be the only one who is actually reasonable here

it’s such a simple question but I’ve met so many people who pretend to like quant but have 0 clue what it actually is like

[thin temple]

you know what you dont like though

if u dont like an industry jump to another

[stone vector]

you won't truly know what you don't like

until you have actually experienced it

[low vault]

Nou Orz :0

[low vault]

I mean this is amongst my school friends who are mostly prev hrt/JS interns lol

Most quant people from my school do a bunch of tech internships first rather than starting from lesser known firms fwiw

This is also from a SWE standpoint

[hot mica]

Usually the people from prop firms arent very aware of multistrat structure (and vice versa) so thats fair. Especially for the ones doing swe work it tends to be quite a big difference in terms of job scope and the kind of people they target

[low vault]

ah icic

multistrat as in pod shops? or just like hedge fund 👀

I've heard of quant firms mostly being classified as either hedge fund or prop shop types

[low vault]

hm wait I was under the assumption that the main categories of swe work at trading firms was either hft or not hft

what's the difference?

[hot mica]

Typically hedge funds would have multistrat setup

These days at least

Kenny g just said he thinks the trend is dying though

[hot mica]

Depends on what subclass u would want to look at. I guess for this server most are gunning for 'quant' dev roles specifically which is a recent distinction but would imply working directly on alpha-related implementations

As opposed to core swe work which is seen as less 'front-office' work and therefore a cost function rather than revenue generating

[low vault]

ah I see

I think that's kinda how HRT does it with like

cre/AE right

*core/AE

ngl I feel like sometimes firms just like to make up fancy names because why not

[low vault]

ah icic

[low vault]

👀

[hot mica]

They made it up cause quant was starting to be a hot term

And the devs that were doing alpha related work probably wanted the distinction from core swe lol

[low vault]

Mmm icic

Lowkey core sounds kinda cooler

Cos ur doing wee woo big data performance sensitive low latency work

But ig ur not directly related to pnl and that’s bad

[low vault]

So true

[zenith panther]

@low vault want to try and solve a problem im thinking about rn

[low vault]

sure yeah

[tidal olive]

👍

[fresh swallow]

I mean I think most ppl here are in college lol

I get it

Actually working for a few years gives you some perspective

[hot mica]

Did u ghost ping my ass

[tidal olive]

yes what u gonna do

[hot mica]

💀

[rancid needle]

does optiver swe do off season?

[low vault]

actually wait google does fall????? how did you do it

I tried asking for fall and they were like

nah there is no fall internship

[lethal apex]

not for you lil bro

[low vault]

sadge

nobody wants to give me offseason

actually shitadel does

[ocean bloom]

They do just choose the August start dates in the preferences form

[low vault]

oh

wtf

guess i was kinda dumb for ghosting recruiter then

email anxiety xd cos i was just gonna withdraw

at this point i wonder whether it's even worth it for me to continue interviewing w them anyway

eh fuck it i'll throw in the email

[valid sand]

anyone know how much squarepoint capital pays for montreal?

[valid sand]

guess i better start grinding c++

my interviews next week but thankfully they are somewhat jr

[dark crane]

We have a source array and target array of length n
In each operation, we can either:

Add 1 to any prefix of the array (elements from index 0 to i)
Add 1 to any suffix of the array (elements from index i to end)


Goal: Find minimum operations to make arrays equal, or return -1 if impossible
Constraints:

1 ≤ n ≤ 10^5
-10^13 ≤ array elements ≤ 10^13

How can I verify if n is a solution in binary search?

sure, you can dm me as well, if you get any hints

[dark crane]

Can you explain a bit more or may be implementation code?

Let me try once and will share

[forest cobalt]

imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc imc

[split lintel]

jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street jane street

[floral salmon]

Susquehanna International Group Susquehanna International Group Susquehanna International Group Susquehanna International Group Susquehanna International Group Susquehanna International Group Susquehanna International Group Susquehanna International Group Susquehanna International Group Susquehanna International Group

[uneven crow]

which role? my numbers were diff lmao

ah

mine was new grad so thats prob the difference

check dm

[lethal apex]

ima use this line anytime I make 100k more than someone else

[low vault]

delta[0..n] = target - source
# Problem is the same as reducing delta[0..n] to 0

if delta has any negative:
  return -1

diff[0..n] = [0 ... 0]
for i in 1..n:
  diff[i] = delta[i] - delta[i-1]

if n == 1
  return delta[0]
else if diff is all <= 0 or all >= 0:
  return max(delta)
else if diff is non-positive, then non-negative
  return delta[0] + delta[n-1]
else
  return -1

[pulsar scarab]

I still dont understand what this question is asking lmao

[dark crane]

I can help you with that, join the vc and we can discuss

[dark crane]

This seems correct, let me try once

[pulsar scarab]

I am here thinking why cant we just comput the diff array and return the max element of diff

[dark crane]

In the second half we are summing the first delta and second delta

but wait delta[0] + delta[n-1] -> this is not correct I think

[dark crane]

wanna be in a call and discuss?

[pulsar scarab]

cant in the library rn, gotta be quiet

just gonna chatgpt this shit

[dark crane]

If the array is non-increasing or non-decreasing -> we can do either prefix or suffix

No need of both

yes of course

[dark crane]

that won't help

[low vault]

Ah small mistake mb it should be delta[0] + delta[n-1] - min(delta)

[dark crane]

sure on that?

[low vault]

I think you can merge the 2nd and 3rd branches in that case as well

[low vault]

Yeah I think so

Hmm there are some weird edge cases

I’ll think about this more tomorrow

Delta of 2,4,2 is possible

So is

Delta = 3,2,4,2,3

Have fun lol

But not 3,2,5,2,3

[dark crane]

I was not able to solve this, it's neither in the internet

I don't know what they asked lol

[low vault]

I’m fairly certain that you can solve this with just case bashing

But I need to zzz

Tried some coffee earlier today and can’t sleep lol

[dark crane]

you mean you are not being able to understand the question?

[dark crane]

try to sleep, take some rest, good night

ask me, I will try to explain the question

you can dm me if you get some solution

[pulsar scarab]

exactly what I am thinking

[pulsar scarab]

so when it says "add 1 to any prefix" does it mean we add to any one number or we can add it to multiple numbers?

[dark crane]

Take a prefix subarray and add 1 to all elements there

[pulsar scarab]

ok then it makes sense

as in I get the question

[pulsar scarab]

yea seems like detecting jumps

[dark crane]

Can you give the full solution?

[pulsar scarab]

if a jump is +ve we need to change prefix, if -ve then suffix

I think

so if u have the diff array (saw someone call it delta). First thing is if delta is negative anywhere we return -1
then, the main algo is greedy
for d in diff:
ops += abs(prev_op - d)
prev_op = d

return ops

the reason it is abs is cuz I dont really care about prefix or suffix op, I just care about how much it is

to make it more clear we can prolly add a check where if the next diff is greater, it means prefix op will be performed else suffix
the diff will be the current diff element + the prev diff element we did

[dark crane]

You have to find minimum

[dark crane]

How to pick the answer?

[dark crane]

Got it, let me implement

[dark crane]

def min_operations(source, target):
    n = len(source)
    delta = [target[i] - source[i] for i in range(n)]

    if any(d < 0 for d in delta):
        return -1

    answer = delta[0]
    prefix = delta[0]
    for i in range(0, n):
        prefix = min(prefix, delta[i])
        delta[i] -= prefix

    if any(delta[i] < delta[i - 1] for i in range(1, n)):
        return -1

    return answer + delta[n - 1]

let me know if you get any testcase that proves this wrong

[dark crane]

@primal shell this is wrong, can you help me implement this

yah interview process

[dark crane]

Can you see this solution once

if you try prefix

it will be [0,0,2,0,1]

or may be I am not getting your logic

how will we know upto where we need to do prefix?

[dark crane]

def min_operations(target, source):
    n = len(source)
    delta = [target[i] - source[i] for i in range(n)]

    if any(d < 0 for d in delta):
        return -1

    answer = delta[0]
    prefix = delta[0]
    suffix = 0

    for i in range(0, n):
        if delta[i] < suffix:
            return -1
        delta[i] -= suffix
        prefix = min(prefix, delta[i])
        delta[i] -= prefix
        suffix += delta[i]

    return answer + suffix


print(min_operations([3, 2, 4, 2, 3], [0, 0, 0, 0, 0]))  # 6
print(min_operations([3, 2, 5, 2, 3], [0, 0, 0, 0, 0]))  # -1
print(min_operations([2, 2, 3], [1, 2, 2]))  # 2
print(min_operations([3, 4, 3, 0, 4], [1, 2, 3, -1, 0]))  # 6

the best I can do, is it still wrong?

[low vault]

something like that

the prefix and suffix can only overlap once type thing

I realized that the casework approach also misses a lot of cases since you can get the prefix and suffix to overlap in some very strange ways

like [7,6,7,6,7,6,7] can be decomposed into

[1,2,3,4,5,6,7] + [6,4,4,2,2,0]

radix

[lethal apex]

Ong?

Anyone know anything about jump trading and the culture?

[low vault]

(this was approximately what I was thinking after leaving)

like minimize the amount of type 2 operations you do?

seems legit

[dark crane]

can you think of any edge case? I think that solution is correct

[gritty seal]

fr? what was ur recruiter initial

[dark crane]

Hopefully, I wont be having headache if I see similar problem again

Or there might be something missing, who knows

[minor roost]

jane street vs hrt for swe intern?

[proven cape]

js

[thin temple]

js def has better culture 100%

Better wlb and culture

[stone vector]

Jane Street propaganda

[sweet burrow]

do you have both offers 😮

[stone vector]

js' propaganda

[zenith panther]

HRT 100%

HRT is simply more prestigious for SWEs

prestige is all that matters.

[ocean bloom]

I visited the hrt office and they have the highest public terrace in nyc if that matters

77th floor balcony

easy way to end your life if the work gets too hard ig

[fiery pawn]

I wonder which firm has a higher density of cpers though

if I had to guess, prob js

[hybrid hamlet]

oh yeah i saw

[thin temple]

Ik ft people that worked at both

• interviewed both a couple times got some insight if that means anything

My info is fully swe though so idk if that skews

[gritty seal]

three world trade?

[sleek smelt]

can someone help w this

[proven cape]

ye

u can literally see it in the photo bro

[lethal apex]

Mind if I dm?

[tranquil wagon]

I’ve heard hrt is more of an academia-like culture and js is more like big tech

[tranquil wagon]

I’d do hrt easily but that’s just because I want to work in cpp and so actively don’t want to work at js

[burnt lark]

is there an akuna discord

[low vault]

I wanted to say that this seems like pretty solid intuition for the problem

I also ended up finding the same approach but the abstraction i used was slightly different

the problem is equivalent to constructing a sequence A[0..n] (A[i] = target[i] - start[i]) as the sum of a decreasing sequence X and increasing sequence Y while minimizing max(X) + max(Y)

you can also prove that X[0] = A{0] (via. PrefixOp(n-1) == SuffixOp(0)) so your goal is to maximize the elements of X as much as possible while minizing the elements of Y

and it yields the solution you described -- "problem elements" are when you encounter Y[i] != 0

[dire arrow]

does anyone know what these quant discovey week things are like

am I expected to do/know anything

or can I j show up n chill in the hotel and attend some lectures n workshops

[lethal apex]

heard they recruit a solid percentage from these discovery events but unsure about criteria

[dire arrow]

So i cant j post up airpod in eating the free food

thats lame asf

[lethal apex]

Share an airpod w your recruiter maybe you vibe

tbf if its a deshaw event they probably only listen to classical music

[low vault]

i went to de shaw connect and i did not like it