#2023_summer
1 messages ¡ Page 371 of 1
If they kick off recruiting events in couple of months, why post the job opening now ?
Idk we were all surprised
Yea weird
Anyways, I hope referral helps in some way atleast the resume to be viewed by recruiter đ¤
How do I get referral, just dm random people who work there from ur uni?
Yeah i did that and it worked
i dm'ed EM's too but they left me on read 
and only one recruiter replied
what did the recruiter say?
What's EM
Are those like recruiters
Or hiring managers
Engineering Managers
damn, didn't know the number was that high
18% of all employees, crazy pecentage
I would recommend DMing recruiters/managers around August when most companies are actively hiring
I told that I am interested in SWE internship and would love to start interview process and then replied that he is not associated with intern role but he could help me notify the person who is associated with that role and I requested him to do so and then he replied the above screenshot
but you can DM people for referrals now if apps have opened up
did akuna oa yesterday, not as prepared as I should've been
So is fine to DM apple recruiters rn since apps have opened
how were the questions ?
most likely they will ghost you since they haven't started hiring rn
True
Alright I will start emailing EM's in Aug 

lc mediums
Also does anyone know how hardware at big N recruitment cycle compares to SWE recruitment cycle at Big N?
C++ or Python
either one, i used c++
Huh, for my OA they specifically told me to do it in C++, weird
and I have 10 MCQ's and 3 coding ig
wait actually, isn't there 2 specific positions for c++ and python?
or is this for another role?
quant role, 3 questions
no prob/stats questions for that role?
Surprisingly none
How hard is Akuna capitalâs first phone screen (30-45 minute code pair) for quant dev?
Yo, which companies have started accepting applications for SWE internships so far?
Check out this list
https://github.com/pittcsc/Summer2023-Internships
they let you use either? what position? The specific language dev positions require that lang
Is that what u have heard? If so I gotta get studying even more than I am now đ
dude i have no clue, apple is open early
tbh i dont expect july to be late
i just need to study
LC grind is back on bois
late august/september may be late just cuz of the number of applicants that I will apply then
youre applying to multiple times to apple?
anything before that you should be fine
lol im jk
No why?
"number of applications that I will apply"
youre gonna fill every spot by yourself
:kekw:
its a joke
yeah yeah I got it didn't see the typo before lol
@hearty river
Ah for quant
Did you do a language one or quant
got the phone screen invite
akuna?
yea
I thought Akuna oa was pre easy but couldnât figure out what was wrong đ¤Ą
fuck hidden test cases
how did you do on the OA?
was it all lc questions?
Na bro you deserve the break
yea ill prolyl apply in aug ish
hopefully firms respect Fb RO if i get
Everyone gets an Akuna OA right off the bat right?
y3s
Cool cool
yeee
I'm going for juinor roles tho not intern stuff
just saw people talking about akuna here đ
i'm such a headass
like ong
i'm actually dumb
I'm a rising junior
and on my application
I put sophomore
I'm so dumb
and I got auto-reject
wtf
anyone have a link to a list of 2023 summer internship positions?
check pins dawg
ok
just email them
pinned
yea, i've used vsc during hackerrank oa before
i tend to use vsc when i get errors on the hackerrank and my code doesn't work correctly
for the python debugger
Noob question: What does oop mean
object orientated programming
so i think it's more of a systems type of question
rather than lc stuff
holy shit
the cpp test
fuck that
I was also so much rustier than I thought I could only solve one
Sooooo rough
Jesus
Literally almost puked reading the questions
Still no clue how I'd solve them
Probably cram and do the python one friday
Anyone done with AKuna Capital OA python
someone said its oop
id study that
im gonna take it like 2 days from now
and people say I am getting MIT Stanford and loo
đ
it's literally a blood bath
I will be lucky to get york / ryerson at this point
Itâs okay sheâs a CS + Pure Math + C&O triple major here now 
how the hell tho
I am so confused
Wym?
She got rejected during admissions and got into math
Thatâs her uni grades rn in the post not hs
if she has all of that I am assuming her hs grades were good too
She switched into that major after getting differed to math
Apparently not enough for loo 
I wonder if I should make a reddit post about myself
and see how many no life sweat comments and cap I get
it's acc crazy
someone got a 97% with insane ecs
rejection from loo
99.6% rejection
(probs cuz no ecs)
But sheâs 2022 so this means she got in 2017/2018
98% IB program got accepted with mid ECs
yeah it was significantly less comp back then
I know someone who got loo cs with 94%
yes
dope
c++ test asks python
what?
im joking
your question is valid
@gilded bolt ayo with your kermit emotes lol
clippers 2023
What topixs should prioritize for google? Dp? Graph? Binary search?
Those are my strongest areas 
I thought google was known for dp
I got dp in my interview if that makes you feel better
Thanks
google loves dp, trees and graph problems
Ok cool
I wonder if they have any dp on trees
How common are lc hards for google?
you got phone?
No lol
OA? 
Nah lol
I'm preparing for this fall
i like it like that
Thank you
also
Juda đ
anyone know how to
No u
Count number of increasing subsequences of size k
i learned the way with meet in the middle
but DP more efficient
2d dp?
I can think of recursion + 2d memo
or maybe move to lc channel probs
Use 2d dp table, size n by k, that stores num of increasing subsequences given a start index for the subsequence and size of subsequence
The answer for the whole problem is spot[0][0] of the dp table
k thanks
i find 2d more confusing
2d is the same idea as 1d, but each subproblem has 2 parameters instead of 1
Neetcode.io has a section on 2d dp
yeah im comfortable with stuff like coin change
and lcs / edit distance
i need to get better at recognizing subproblems / params
does fb ask dp
The daily lc yesterday was 2d dp
Not for interns, idk about FT
Next one, triangle was 1d
3 of the qs on my twitter oa were dp
rlly? i stored both row and col in memo
col as in index within row
i did it like min path sum on trees, except memo overlapping children paths
You solved it with recursion + memo?
You can solve it using just by storing the results for the previous row, then going down the triangle
No recursion
yeah that makes sense, so in place right
twitter asked for the approximation alg version of dp for mine
idk why people call it tabulation and memoization for the 2 methods
they're both storing things in a table
i prefer iterative and recursive
Yeah
do interviewrs have a preference?
i usually do recursive
@hearty river do you like DP
Yes, modern C++ standards like âselect all of the following that are true and unique about r valuesâ or âis this going to cause an error in runtime, compile time, or in the linkerâ
And then 3 LC
Snap didnât for a friend of mine
I feel like most donât care
yeah
i mean i would think it would be too picky to care about the recursive overhead
Maybe if you have a lot of time theyâll ask you to do it iteratively
If you can do it top down itâs very easy to convert to bottom up anyways
Did u watch erik demaine's mit lecture on dp?
i was like, what's topsort, but ohhhh topological sort
He's the only one I've noticed refer to tabulation as topo sort lol
i mean i see where he's coming from
to get the loop bounds yea / ordering
i really need to get a list of blind 75, that list of 100 i found somewhere, neetcode, and grokking all on one site
Make it 
I requested someone from Google to pass my resume to Recruiter/Hiring Manager but they referred me for fall 22 internship
What should i do now ?
How did they refer you if you have already applied?
I did not apply to any role yet
I asked him to pass my resume to recruiter
oh I see, someone else can help with that as I am not sure how google referral works
so did that person send you a referral link through which you have to apply now?
are there internships for post undergrad individuals? might want to squeeze another internship in before doing ft đ
so like ms or phd internships?
most internships require you go back to school for one another semester so unlikely
more like internships that don't require you to be within a semester of graduating
ah ok
ft it is
i forgot how unyieldy it is to code without an actual whiteboard
WHY LIVKEDIN
I already have two social medias
True
Google plus is dead
no 
Zu k killed it
YouTube is a social media tho
intermittently
Okie dokie
mediums are more useful but hards are still good to be able to do
Got a link that says invitation lol
Thanks
How did you do ? đ
Whatâs the point of doing an internship after you graduate if already have an internship lol
Resume padding and extra money before the start of your new grad job. I was lowkey considering this as well lol
I don't understand the extra money point. Why not just take the FT job? It should pay more than an internship
True but this kinda coincides with the the resume padding point (money is an added bonus) cause if the summer intern company end up giving a return offer thatâs better than the new grad company you was gonna start the person can always renege for the better option. Like if the person wanted their start date to be in September and want something to do in between they can do that.
But this situation is probably super rare and very dependent on the personâs plan and circumstances
Oh ok
Bad but I got unlucky
1 LC hard and 2 mediums
Only solved one medium lmfao
Couldnât have said it better myself
@south aspen got the lyft eta decision
theyre opening to workshops for all applicants
i think screening / selection happens before mock interview
yeah not so happy about it
same
yea
at least ill be somewhat more familiar with their process
but those hours better not be useless
Yeah I was mainly doing it for the expedited interview, not for their glorious workshopsâšď¸
yeah, this is what i hoping as well
lol i knew it
yeah
otherwise itll be useless
and bro
even their expedited isnt truly expedited like you just get final
they said you still need to do OA then final
i think you skip 1 round iirc
yeah
but most other places i hear expedited are just final
not rlly skipping since im p sure you have to do well on mock interview
at least you get your process started if you get in
yeah its def good
still way better than getting ghosted when you cold apply
wasnt too bad?
why is it 120 mins
do they care about speed im assuming
how long did it take you
anyone know abt hrt bipoc?

id do it
y free interview?
no, hrt does a lot of these events
I just hope they have some new swags to giveaway
no but nice to network
i want to learn what algo devs do, ive been interested
rip than its not worth it tbh
thats shiii
wdym
thats a waste of time
its rlly not
youre being pessimistic
if you reject every opportunity that doesnt give you a free interview its not gonna be easy at all
and connections help
yeah so go to the summit is my point
with this event
never really go into these summit/events with a hope of getting an interview, just network and you will see opportunities coming your way at some point
exaclty
what is this?
is it hard to get an OA from akuna?
its not auto
uh it is?
probably
I know some got rej without oa so
idk how much automated that is
interesting
a recruiter asked me questions about my app before giving oa
maybe they had wrong grad date
hmm
theres probably a initial screen
like grad date or smth
not those
huh
thats probably something on their application, like late grad date
or low gpa
thats what i thought
probably i done some OA's and know i got them correct and still got rejected

probably so people said the OA is auto. I heard two people got rej even passing all test cases with optimal solution. but idk
grind leetcode
Touch grass
giveaway
this is for a samsung intern posting, what does TB1 mean???
The onsite for intern consists of 4 rounds: coding, system design, stats, and data analysis. Thats insane to me
how many rounds before that?
phone is technical or just behavioral?
damn
Super technical
Oa is like 3 qs 2 med-hard 1 easy-med
There is a reason u see 10-15 core interns yet only like 5 algo dev interns on Linkedin
which hrt position as the easiest process for internđ
Janitor hopefully
yeah imma grind stats and ML this summer
ye
some research and projs
havent taken class at school 
tbh i like learning on my own more than school
same lowkey
istg i learn more efficiently on my own than through classes lol
facts
and you can do stuff that interests you
not sit through bs half the time
i wonder if MS courses are more interesting
or if its the same deal
my upperclassmen said their MS classes or either complete jokes or omega hard lol
no in between
these are guys who flew thru GT undergrad with 4.0s no sweat
Jfc
I got destroyed on the first phone
what types of stuff was asked?
was it theoretical stuff or more quick thinking
definitely quick thinking
You go in with your camera off
and a pencil and paper to help you work out problems
anyone kno companies that will hire just graduated students for intern roles
What company yâall talking about? @runic glacier
Guys, will meta have Intern hiring freeze for Summer 23 ?
Also anyone know if BIPOC summit for HRT is open to all or just POC?
How would anyone know that
Okie, My bad
No worries just wait til like September or October , still way too early to say
Oh awesome I should apply
gotcha ... any good resources that you used to practice?
do you know what cooldown is?
Anyone do the akuna phone yet?
I wish
i didnât have time to prep so I just tried speed learning probability and practicing word problems
It solidifies his career as being #3 all team behind the goat Chris Paul and Michael Jordan
Were u a junior when u interviewed?
yup
This was in like October
Donât remember when I applied
Yes this was expected
Hopefully python goes a little better
Aye huge props to them for actually saying what the reason for rejection was tho
You solved 1 coding only right ?
Btw which mail app is this ? Looks kinda cool
outlook
its outlook and yeah
only got one lmao
was brutal
id be curious if an LC god could message me
and we could go over them
if you want I can slightly change them so you don't feel like you're cheating
Lol
Is this summer gonna be down bad cuz of the recession?
I wonder if the python is similar to cpp one
I had the cpp and the whole oa was just implementation
Hello there
Hi
dude what
its gotta be random
mine was all LC
yea hmm maybe I got lucky then
Honestly was wondering the same thing
Id say most companies let you pick your language, almost all allow a minimum of C++, Python, Java
lol when Java is the language that I am not familiar about
oh wait. Akuna requires coding in java during interview?
ok ic
So... you guys are already interviewing for internships for summer 2023?
I'm barely starting. Is it too late?
some are but the positions that are open are super early
imo no
youre way early if you start now
late is like december , maybe even jan - feb depending on company
Oh OK. That's a relief 
fr its freaking me out that people are already moving ahead
i know right!
i still need to take akuna oa
nah just not eligible
trying to do lc during weekdays
ah rip
but doing lc during weekdays after / before work is hard
no visa moment
Yes, it is. Spots filled since summer 2008
@flint belfry @unreal seal For both of you, no there is no Java position at Akuna
yh most big companies do but not for akuna
they require the language that matches the position you applied in
So if you applied for C++ development intern, you're going to be using c++
Summer just startedâŚ
fr 
Why does the 2023 summer intern list have a link to LinkedIn's application for 2022 fall
Is it for summer or not
someone was high and put it on there
be like 5mins
its for fall
okay thanks :/
@upper cape
hi friends
if someone sees one without this, let me know cause imma apply for that 
i assume this is it
it says u need legal authorization to work in the us
i dont have that
ok so you are thinking about it how i was
its soo hard to tell
maybe i send it anyway

cause it could be interpreted that "apply and well get you the authorisation" or "dont apply unless you have authorisation"
this
i guess im sending an application
canada?
uk 
i might just send it, worst thing to happen it auto rejec
Apply even if u are not eligible (fake it), to get experience interviewing
i did consider this lmao
Do it
Where are you guys based?
Most positions discussed in this server are in Canada? or the US as well
Ok, get it
there is an International channel
kinda quite tho
fr i spoke to some who in the uk tho
hustling for those us positions 
Thanks for sharing
I do LC at work 
lol tru
how many questions do you practice each day
i try to do at least 2
and then go over problems i found hard before
they're checking on you

Hi @gentle latch @hallow scroll
Iâm future g reject đŤđ
u capping on my capping
shii hopefully
hoping my interviewers come through đŠ

How was it?
meh
yeah im definitely learning dp now lol
I hear a lot about graphs and dp for google interviews
are these lc questions cause i also heard google doesn't do lc questions anymore
DP 
I didn't think dp was common for g interviews so I didn't study it
but I was mistaken

lesson learned
Yeah they do lc
yeah one of my questions was on lc lol
what like number of islands or rotting oranges. these types of graph questions?
cause ngl they seem too easy for g interviews
I didn't get graphs for my interview
dynamic programming moment
dynamic programming indeed
can confirm, both my problems were meds
I think hards are possible but like any place you gotta be really unlucky to get a hard lol
Yeah G is pretty easy considering the prestige
I expected them to ask only hards when I first got into the job hunt
Guys
I want a girlfriend
I need advice

And lc count
I hear once you hit 2k LC questions, you can redeem one from the shop 
bog says otherwise
Assembling a chair feels better than getting a leetcode medium in one try
how
It just is
how
how
how
how
I said dp is uncommon (tho my bro @hallow scroll got something related to prefix sums today)
Graphs are common
man got bamboozled by dp
yeah i think i just got really unlucky to get dp lol
@wraith ice takin cs341?
you still in school?
ah ok thought it was still spring
i was like june 15 kinda late
I just solved Two Sum, am I ready for FAANG?
was grokking worth it for you guys?
Considering buying to actually get to use the interactive stuff
rather than just read

I recently started doing it and it is amazing, but I didn't buy it. I just look up the problem in lc snd solve it
I wish I had started it earlier
Whatâs that
I recently gave my Akuna OA for Dev-C++ internship.
Q1- 15/15 passed, Q2 - 12/12 passed, Q3 - 14/15 passed but I kinda f'ed up the MCQ questions, I might get only get 1/10, What are my chances of getting into phone round ?
what are mcq questions. is this like system design or something? cause i never heard the phrase mcq
Multiple Choice Questions
fr?
Question and some options, chose one or more options
yhyh
Yes, they fk'in asked C++17/20 questions
Templates, Macros, Enumerations etc....
interesting i never new companies asked multiple choice questions, i will keep this in mind in the future đ
Akuna is doing this for some reason, its like they want me to fail 

Like hubspot recruiter reached out saying they will prioritize my app for 2023
Anyone done hubspot interviews???
Looks like an automatic email. So the prioritization might be cap
I got this as well
but on linkedIn
Sadge 
Goat
Did anyone do akuna phone for quant dev
i did too
hubspot interview process is ass.. waited 2 months for a rejection while being teased the entire time
The fact that a company thinks itâs reasonable for an intern to be grilled on system design
Like is the internship not to learn? I donât understand the companies that want you to be an expert in nearly all areas of SWE
we need more time
lol
No, they just want to trial run a cheap swe tbh
they don't want their interns to need to learn
bro is LC down or something?
Nah, working for me
yeah got it working
was a moron and had an infinite loop and instead of time limit exceeded, it just ran for like 3 minutes lmao
This is O(n) for removing duplicates from sorted linked list, right?
Yeah

I'm listening to yahkub's favorite song
True screw gooble
Did akuna violate u?
i think he meant hub
Love again
Did u solve daily lc? @gentle latch
It's an old one I already did before
No spoil 
dont you guys have internships rn? how tf u leetcode during the day
There are 16 hrs in a day
I finished working. It's 6pm where I live
Plenty of time for internship + leetcode
yea :/
I bet it's like house robber 3
I didn't solve yet
We did like a 2 week learning project before the summer really starts so we present that today but not until like 3 hours from now
Just do frontend for hub
is hub as in phub
I saw some dude on cscareers discord
wait reddit i mean
anyways he worked at phub
and he said they replace all images/video thumbnails with dogs when working on it
like the dev environment is setup that way
Maybe they have diff cms for dev env which has only dogs
weird
Add Two Numbers linked list on LC is fun
its not
its
hi
Hi
đź
pretty easy tbh
its med
but it showed me importance of thinking it all out hahaha
cuz I forgot to add node at the end for if overflow
then I failed the test case
and was all "aha"
Yes nodejs for overflow
not sure how you'd handle it without importing an overflow framework
definitely not just a two line if statement
lmao
someone want to get frustrated, do "reverse singly-linked list" on LC iteratively
as you pop from stack, you have to set the node's next to None before assigning it as the next of your current one or LC freaks out and says "cycle detected"
despite the fact that it would've been handled in the next iteration lmao
huh?
iterative is the classic solution
with the while loop
no?
I learned recursive first
but I suppose yeah most would learn iterative with stack first
there's no stack in the classic solution
Well not sure which solution you mean then
i'll send
I did it with stack as it was on some list of recommended questions under the "stack" section
ahh
so I was like "hmm Ill try it with stack then"
def reverseList(self, head):
prev = None
curr = head
while curr:
next = curr.next
curr.next = prev
prev = curr
curr = next
return prev
that is clever
basically the exact same as recursive
just hold a prev instead of relying on call stack
oh ya know what, i wonder if it was under stack section cuz of call stack lmaooooo
Lc while working
Lol
Is Akuna Capital OA auto?
not really
also wtf I just got c++ dev oa
after I scheduled my quant dev interview

Not really? It's either it is or it's not. Either way, just got mine today.
It isn't auto
but it isnt really strict
its like if you graduate anytime soon and are majoring in CS you get it
Source: I've gotten python, cpp, and just got the UI/UX C# OA and I am definitely not an overachiever
how long is amazons cool down period
I heard 6 mo
normally you can apply to another term, doesn't seem like theres a cooldown
bet
if you get auto reject then thats how you know youre on some sort of cooldown for them
lmao this should be super fun
Just had akuna quant dev phone
how'd it go
Got a class design oop/tree question out of nowhere
Does leetcode have a set of Akuna capital questions?
I heard from someone else who had their quant dev phone that they had a dp lc instead
I think I said Mediator instead
dp 
damn I thought it would be an LC easy
I would've preferred the dp to this class stuff
Just make sure ya aren't a moron
My opinion is that phone screens are the hardest
cuz no computer
Also dont they just straightup call outta nowhere
Like "Hi this is akuna, good fuckin luck mate"
It was scheduled
oohhh okay
I swear I've seen some people complain about applying to like goog and they just call you
they're like "Hi this is so and so from Google, do you have a minute to answer a question"
Then, thinking its like a normal question like "can you confirm this on your resume"
its a damn LC
Oh yea, that's how they told me I got accepted for this summer
I don't think they blindside for phone interviews anymore
i dont think google calls you for a random interview, maybe for a decision or something
but yeah they make you schedule them
i coulda sworn they did
maybe the guy I saw say that was just lying
@honest locust where you get good at LC?
Any recommended resources?
Does everyone get Akuna oa
I'm currently struggling at merge intervals on LC
pretty sure
can we pin the answer to this haha
I'm a ta for our algo course, but my algo course helped a lot about how to go through the problems
Be my TA
Yo, how strict is Akuna with their OAs
Wym strict
like in terms of correctness or cheating
considering its auto you probably have to do good + have a good resume to move on
No like whatâs the probability you get one
99.9999999999
If you get rejected for one position at Akuna does cooldown apply for all other positions?
there is no cooldown
as far as I know
Nice
Oh okay cause I mass applied and got 6 OAs, 6 apps
Cuz I already got hammered and rejected for cpp two days ago
but still got sent ui ux oa today
Oh apparently the quant ones share an oa
And how bad are the OAs, are they like lc meds or hard?
Oh it's probably some design stuff
gonna take it soon and lyk what it is
You're a godsend
I wanna know too
I had 1 hard, 2 mediums, 10 MCQ about C++ as a language
for C++ dev
Thatâs harsh dude
The python one I hear was an oop question and 10 python MCQ
Are systems design and oop coding synonymous usually
For questions
Yeah you can tell by name
depends on the company, some companies consider their sys des rounds more like oop
there is also an OOP for C++
You get 1 or the other
If you have front-ran detection for python, its OOP
if you have like a generic name like "Python Development OA" that's gonna be LC and MCQ
Same for C++
tho idk what the name of the OOP one for C++ is
Campus C++ Test 2023 - I
Yeah good fkn luck mate

still wondering what's the diff between python development and python campus data tool for the interviews
Not sure
I think data tool might be specifically using things like Numpy/Pandas/Keras/Tensorflow
Data science only with python
whereas python development can be a range of things
Just did the UI oa for akuna, its just leetcode
I saw it was leetcode and just closed out lol
yeah meds/hards
Did you have a chance to read the questions
cmon now
$50 startup with no LC interview is possible actually
Find me it
plz
â¤ď¸
Rn, it looks like my best bet is Palantir internship tbh
Which ngl I would love
it looks like a rlly fun company
have you applied?
Palantir
Hasn't opened yet
but applied last year
and was too young
but left a good enough impression that I had a recruiter reach out right after explaining that it was solely cuz I was too young, then reach out again last week
And she called me and answered questions and got to know me earlier today
I feel like a lot of startups have good culture and nice people based on what I saw on their glassdoor reviews
That's good to hear
yea but I believe they still ask you basic oop,data struture,algorithm knowledges during technical interview even there's no LC.
Can we make a new 2023 summer process?
I roll up to work at 6:30 am. Bang out an 1hr and 30 mins of leetocde, the do internship work for the rest of the day.
I get all my tasks and features done soooo
What does palantir do?

I've never applied bc of the grad date req
same 
my job kinda slow, clients kinda slow so i get some free time lmao
Yah same here. I need to wait for hardware to be available to do firmware tests
And it's being used in the morning
i just find myself sitting around waiting for other people to do what they need to get done so i might as well do something productive so i can try and get a better job 

Mr Palantir do you work at palantir
no i got close

Next time 
fr, big up palantir for giving me hope
right
Python OA time wish me luck
nosomeone said lc med
Give me money and then I will take your free course. And I will keep 100% of my commissions.
Homie u seen coinbase recently đ
Ain't no way you can make $10K in 72 hours, crypto is doing shit
Anyone who put money in there recently is losing it
fraud alert lol
So get your scamming ass outta here
Recheal is such a fake ass name too, could have at least chosen a legit sounding name
I'm done work so this will be my 15 min entertainment 
Pls go on, I'm waiting to carpool đ
whens rezero season 3 coming out
cant believe i missed out on this opportunity, instead i was doing N-queens lc









