Winning Codeforces Round

What is Competitive Programming: • What is Competitive Pr...
I was in the right mood, so I decided to do my first screencast with a facecam.
1st after the end of the contest :) Hopefully I won't fail system tests!
Contest site: codeforces.com...
I created a Discord server for discussions and more: / discord
If this was helpful, consider liking or subscribing!
Website: williamlin.io/
Instagram: / tmwilliamlin168
Twitter: / tmwilliamlin168

[@tmwilliamlin168]

If you want to know what this video is about, be sure to check this out: kzbin.info/www/bejne/q5axhWCtbLSfq9k

[@mujahidulislam315]

which software you are using to make this video tutorial..

[@AbdulGhani-qj6vy]

Hey bro, how master ds and algo can you please tell

[@drainbamage2542]

When there is the wrong answer: us: as expected, I'll try again him: maybe the test data is wrong

[@tmwilliamlin168]

Nah, it's only because I saw that the good LGMs were getting it wrong.

[@BigInSpanish]

pure comedy

[@youarecorrectiamwrongbecau1338]

Plz give time stamp Got it: help for others - 35:20

[@nanayang3736]

laughing so hard😂

[@GoOnKnives]

I don't even know whats going on but somehow im still entertained.

[@henriqueyun]

same

[@deadlysilent7120]

I'm just here for the Keyboard ASMR

[@jahangirkhan8019]

Me too

[@ittechnology2008]

same 😅😅

[@nikhilchauhan7511]

The way he types...it feels like he is walking over a bunch of dry branches. You are amazing man.

[@ibbann]

This guy : *everything he types Me : hello world

[@gamerlion472]

Same here bro?

[@marshmuller3470]

Hahaha, I started learning java yesterday after leaving it for a while after I got discouraged. Yesterday I wrote “Hello KZbin”. Today I wrote a program validating user input where I can check and verify entered usernames and passwords. Keep going bro.

[@cnoevil8468]

That one guy that gets shit done in a school group project.

[@rilevac9806]

He: Write the whole code Me: Ctrl+C / Ctrl + V

[@devolzre]

You missed the first step Ctrl+A

[@ShenNagavlogs]

@@devolzre maybe be he wanted to use the mouse

[@RabbitConfirmed]

I swear, seeing this makes me feel so small and bad

[@EtchisonDobbsBlair]

And so, you are.

[@mm-vv2de]

stfu

[@MaccaBeats]

you aren't wtf why did he heart react

[@-perge]

He's so good it's exhausting. Btw, life ain't zero-sum. Your skill isn't dependent upon how many grandmasters there are. If someone this good suddenly disappeared tomorrow, would you notice an improvement in your coding? Similarly, you are not any worse just because someone exceeds you. They don't have the power to set *your* goals. They cannot tell you how small you are. Only you can do these things. If you think you have to type this fast and have this intelligence to be "big," you are mistaken.

[@nothingiseverperfect]

The Perge Damn, thanks bro, needed this

[@user32132x]

I liked the fact you are not using long scary templates to scare beginners

[@mohammedshoaib1635]

Congrats on winning the contest! It was nice to see how your mind thinks while solving the problems :)

[@prabalkalia-iiitk5443]

Found you

[@shoaibmohammed3707]

@@prabalkalia-iiitk5443 Haha damn! This is the account I generally use though

[@poorgang]

Wow facecam and keeping the wining streak 👌

[@aymanelkati3500]

You're a motivation man for us amateurs, the world better be profiting from your godly skills. hope you're happy in your life man.

[@CompletedLoop]

the definition of this video is... Big Brain Time

[@shmaestro]

Wow came on the top - that's amazing! You had already had a large guy following, now with the facecam, you're going to get the girls following you too! :D

[@tmwilliamlin168]

I hope :D

[@DurgeshKumar-pv6pm]

Think Twice Code Once..

[@sinki19841984]

Get error, flip desk and blame society for it.

[@dorjderemnamsraijav5182]

@@sinki19841984 lmao sad but truth

[@historymobile6210]

Bro you are one of the best motivation for beginner programmers I swear

[@shihalex1048]

Me: So while loop is to keep running the code and... Him: (Beyond my understanding)

[@Virus-ke8xj]

lol😂

[@raghavupadhyay9906]

The time I took to understand problem A, he already implemented...

[@rosnxs.n.h.5621]

The sound of the keys as he types is like the rain on an autumn afternoon, when I'm looking through the window for hours, trying to solve a codeforces problem with a difficulty level of 800.

[@clarity7862]

This make me recall when I was in NTUCSIE's computer room, there are always some people coding with incredible speed...

[@divyanshagarwal849]

Waiting for your codechef long challenge explanations after the contest. The contest is a bit hard this time😅.

[@Subi_Py]

omg the typing speed i wish i had such great typing speed.

[@KrishnaTandon]

And that’s what is practise of years and that lightning fast speed Excellent 👍👍 Please share some tips .

[@tmwilliamlin168]

I simply practice a lot.

[@kennethchong1540]

Its the Asian thing =.=

[@mux7486]

Kenneth Chong it really isnt

[@clipit4503]

@@tmwilliamlin168 Bro can you hack nasa

[@Ammadgameplay]

"We sweat in the gym, he sweats in programming"

[@AlexandrBorschchev]

i feel like the sound of the keyboard contributes to his performance, also it requires more force to tap a key which means it more challenging and motivating

[@rakeshhotker4762]

One day you'll have a million subscribers,love you.

[@tmwilliamlin168]

I hope, it seems really hard though

[@collwyr]

gotta be honest, i have a masters in computer games programming and i was just in awe how quickly you were solving the first few.

[@tmwilliamlin168]

Competitive programming and software development in general are very different fields, I think I haven't written a project with over 2k lines of code?

[@ichbinstiim9734]

That's insane I'm also learning coding and this is like a view how much difference is between me and a profi. good to learn a bit ^^

[@sdrogo]

I didn't understand a single line of code. Nontheless, the sound of him typing was really relaxing.

[@redstubxd2489]

Same,i like it

[@Sounov69]

I have a addiction to this channel videos OMG

[@TORRES74584]

Mis respetos bro, la neta estás en un nivel muy superior Felicidades!

[@mostafamarwanmostafa9975]

I don't understand nothing but im happy watching him solve the questions

[@maxonchick01]

An Asian uses only 0,003% of him skills

[@cj3511]

What if He uses 100% bruhh?

[@enigma2886]

@@cj3511 they make nasa

[@maxmustermann-hx3fx]

Wow that is awesome but I dont Trust people using the Mouse in vim

[@calebjlee2685]

You know things get serious when he has to look something up

[@coding.7.7.78]

First time see your video amazing person really appreciate your work !!

[@BlueWhaleGaming]

I think it’s impossible for me to reach your level of intelligence in this aspect.

[@maarcoo97]

@Orochimaruツ I pity people like you

[@BlueWhaleGaming]

Marco97 okay?

[@petcu83]

@@maarcoo97 beta xd

[@ankitnegi619]

There is always a asian better than you 🔥😌

[@thephantom7841]

theres always someone better than you

[@tevinchan9433]

aighta am sure he didnt make a mistake!!!!

[@thephantom7841]

@@tevinchan9433 who?

[@xemgihomnay1927]

Its must be "an"

[@0123-g3n]

I am u and he is me U said above line

[@alexchan6811]

Watched the entire video and still don’t know what’s happening but congrats 🥳🎉

[@zenzen318]

Great one, as always :) May I just ask you one thing: Where did you learn algorithms and data structures? Also I would like to thank you for making these videos and explaining solutions! :)

[@tmwilliamlin168]

I find the sources for these algos and DS from google.

[@beksultanasanov4442]

@@tmwilliamlin168 can you be more obvious please. Exactly what sources?

[@TheAmericanDeagle]

Beksultan Asanov lmao, i think he means that he didn’t use any specific website or guide, he just searched for the information when he needed it. it’s not great advice but hey that’s what he did

[@nwc6452]

Ernesto lol

[@airticketvisa9850]

Wow amazing for me. But me when code. #include..... Int a. Thousands years later ;

[@Frankhuaylinosvelasquez]

hahahahaha why are you invoking me?

[@vaibhavsharma1653]

Nice william was waiting for this video:)

[@akhilsaini5956]

I saw your stream for the first tine. You are really a pro. How fast you think is really amazing.

[@sevkifurkankel]

I don't know why I am here and I don't even know coding but watching you is hypnotizing

[@sherlock2853]

Good to see your real face. As it is always to see the real faces of strangers

[@wasifshahzad5001]

I was solving the B task today and coincidently I wrote the exact same code as you did.

[@saikat93ify]

Amazing performance, William ! You even finished ahead of Um_Nik ! I think you will become a Legendary Grand Master soon ! I want to hear your thoughts on E and F, in terms of aesthetic. Is F a standard exercise problem ? I love contests set by mohammedehab2002 !

[@tmwilliamlin168]

Well, div 2 problems are easier, and I rely on speed for them :P I think E and F are semi-interesting. F is not standard, but knowing about DFS trees is useful.

[@saikat93ify]

William Lin Thanks, William. Did you find C easier than D ?

[@tmwilliamlin168]

Yes

[@kirbytwins2229]

so when you win these types of coding races, well i think its a race I don't really know but when you win do you get like scouted or hired at any big companies looking for expert coders??? please let me know i'm very interested in this for some reason.

[@yacinmessaoud186]

Thank you for this amazing content !

[@justinchoi6681]

This video is gonna blow up

[@nathanc9050]

Me and my boys love the face cam

[@frezzt2271]

You are actually so smart and talented. You really should get more recognition!!

[@siddharthkumarverma5346]

Really awesome to see you coding 😇. I am trying and every time but only reach to div 2C.

[@aligohar1708]

That copycopycopy solution was crazy amazing

[@its_neel_ok]

4Qs in 15 min and here i am barely able to solve 2 problems :

[@dhvanilvadher1356]

Thanks William Lin . Can you make dp question set or a series for dp questions. I just can't understand DP concepts.

[@tmwilliamlin168]

I'll think of it, I just think that there are probably resources out there which explain DP better than I can.

[@dhvanilvadher1356]

@@tmwilliamlin168 recently I saw a question in Div 3 E. I was able to get recursion but couldn't make dp table. I did A-D in 33 minutes and for 1.5 house I just read the question poorly I don't know what I am doing wrong.

[@pigmeister]

try to search atcoder dp contest

[@luongle5984]

Big brain, fast typing, good logic,.....many things I still have to learn when i watch your video :((

[@the_real_cookiez]

Hey man, how do you type your square and curly brackets so fast? It is binded the same on QWERTY keyboard and just muscle memory?

[@tmwilliamlin168]

Through a lot of coding practice

[@mohamedyansane6595]

This guy is a real genius glad to know you😊

[@nahidhossain2058]

Screencast with a facecam seems a good idea. Otherwise, sometimes it gets boring! Hope you will continue it!

[@brayaon]

please keeping doing these videos. they help me a lot. Thank you so much!

[@giakhanhle2532]

What extension you use to put all the contest's problems on 1 page?

[@ps8883]

I watched for whole 1hr wow man you code like a pro!!

[@user-gh8kl8ff3v]

How long have you been coding and where did you learn all this magic? Very impressive!

[@DevRightms]

Dude , you are awesome !!!! i am 16 and still potato programmer ;)

[@kurshtivk8876]

you arent alone me also.

[@dannyle1963]

Dunno what's going on but it's relaxing and I feel smart

[@yopyop8175]

You have excellente problem solving-skills and you are very good at algorithms. I will not say that you are a programmer acording to this video. Whats is impressed, is note the code itself (you are very fast) but your capacity to think strongly fast. You are amazing for your age and i would be not surprised to see you win a gold medal in informatics olympiad. but it doesn't mean that you have strong knowledge about the structure of memory, about how works a computer. I say that only to clarify some commentaries that i have read.

[@lepord833]

his video my mornings motivation

[@yahyafati]

Loved this video. It would be great if you would make a video, on how you solved this problems? Your thought process maybe?

[@habywho3066]

I don’t understand a thing but I like the sound of his keyboard

[@khanshammo5139]

Where do you get the formula (a XOR b) = a + b + 2*(a & b) in problem D . I understood it. But is it standard formula or you just derived it by logic?

[@tmwilliamlin168]

It's well-known, but it is not too hard to derive if you consider how carrying in addition works.

[@cheesegrillz]

i didn't even finish reading the question and he already typed the solution.

[@lukaizz8142]

And i am here and i have 0 idea what this is all about :D

[@johnsanjeev2376]

I watch all his videos with a hope that I will understand what he is doing, some day in future...😭

[@RanDom-fs5xl]

Hello, I'm beginner. What should I do first to learn C++ like you? Could you please recommend something about C++ itself?

[@tmwilliamlin168]

I was already familiar with Java, so to learn C++ I first solved problems using Java, then I looked at others' solutions with C++. I started doing this for easy problems and then for harder ones. Gradually, I was able to use C++ myself.

[@RanDom-fs5xl]

@@tmwilliamlin168 what a great way to start. I'm going to learn C++ by now, but I don't know what should I do to start first. Could you give me some information about learning programming languages like Java or C++. I'm sorry for asking you like this. Thank you so much.

[@tmwilliamlin168]

I used books to learn Java. It was a long time ago, I don't exactly remember :/

[@RanDom-fs5xl]

@@tmwilliamlin168 Oh, okay.. i see. Thank you so much.

[@umatjeet8012]

You are my inspiration William lim.

[@madhukaryadav6739]

man you are an inspiration

[@k1dprogaming108]

wow that’s some super fast typing that keyboard sound

[@napalm4800]

I am proud that I managed to think of a solution to B faster than him

[@liftingisfun2350]

Hey William, can you make a video series on how to get into CP in an intelligent / efficient way? I know many people can spend lots of time going in directions not entirely useful

[@rafayeathossain8731]

keep uploading more , i love your live stream

[@kishanmittal431]

well actually u guys do code a bit I thought that the ones who r on the top just edit some of their previous codes and submit it because u r already so much experienced that every new question gets reduced to some older ones. btw u did an amazing job ,

[@Straeger]

seeing him type so quickly is so entertaining I dunno why 😂

[@nikhillondhe5815]

Was refreshing your page, lol. Nice

[@nimishbansal8282]

same

[@sanketagarwal706]

Great Streaming Thank you very much

[@rolands9989]

He is typing, while MIT watching this is preparing an acceptance letter

[@lukerhoads]

What is your suggestion for getting started? Is it to grind hackerrank and leet? If so, how long have you been grinding them?

[@akshatvats7992]

This is the first time I didn't understand some code due to the light theme. Usually I don't because I am not smart enough.

[@LiftedBigFace]

this man is speeeeeeed

[@dragon_warrior_]

Can anyone explain me his first solution?? Did he just printed x and x-1 ??

[@tmwilliamlin168]

1 and x-1

[@JorgeIbanez713]

Cause gcd(1,a) is always 1, and lcm(1,a) is always a, so if you choose 'a' = x-1, you'll get always 1 + (x-1) wich is equals to x

[@dragon_warrior_]

@@JorgeIbanez713 wow

[@n1nly617]

Me: So happy when I give me 99999 diamonds in Minecraft with Cheat Engine See this: DAMN

[@n1nly617]

omg thank u for the heart!

[@buzy6782]

How people think of programmers (him solving problems) versus how they really are (me struggling to print hello world)

[@sinki19841984]

Just pick HTML and type Hello world!

[@kimreneouk9678]

Ah Yes!Some of us came for the keyboard asmr

[@mahmudhasan4654]

My bro is handsome

[@ronald7196]

I’m learning data structure, there are still more things I have to learn

[@youarecorrectiamwrongbecau1338]

Original title : Winning Codeforces round #628(Div2) Title I see: *embarrass yourself as a competitive programmer in 1 hour*

[@kunalgupta8380]

If he gets a question wrong Definately its wrong question

[@AlanGarcia-fz9qu]

This guy : types google code Me :cout

[@AlanGarcia-fz9qu]

Compiler: Error line 6 cout....

[@abhishekmore5856]

i have become a huge fan of yours. you are awesome. i am eagerly waiting for all your next videos.

[@rtnjo6936]

my sister start to program in 6, she was in competitive programming from 10 and in 14 she past IQ test and got 170 scores mostly because of algorithms she knew) iq tests = algo?)

[@tdpencil2811]

Big flex