Facebook Hacker Cup 2020 R1 (full score, part 2)

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  • čas přidán 15. 08. 2020
  • Two hardest problems (B and C). Watch easy problems and testing here • Facebook Hacker Cup 20...
    Screencast with commentary of round 1 of Facebook Hacker Cup 2020. It's a big annual programming competition organized by Facebook. Problems and final standings: / round-1
    Subscribe for more educational videos on algorithms, coding interviews and competitive programming.
    - Github repository: github.com/Errichto/youtube
    - Live streams on 2nd YT channel and on Twitch: / errichto2 & / errichto
    - FB and Twitter: / errichto & / errichto
    - Frequently Asked Questions: github.com/Errichto/youtube/w...
    #Coding #Programming

Komentáře • 172

  • @Skadidida
    @Skadidida Před 3 lety +110

    random recommendation, i don't understand anything but liked and keep watching this.

  • @boco6969
    @boco6969 Před 3 lety +327

    idk whats going on but i will watch anyway

    • @Errichto
      @Errichto  Před 3 lety +96

      that's the spirit

    • @reversicle212
      @reversicle212 Před 3 lety +12

      @@Errichto hey dude can you make a video about math in programming? like math that comes in programming and how to improve (btw I'm an eighth grader, pls help man I wanna be a better programmer too)

    • @bothpj9593
      @bothpj9593 Před 3 lety +5

      @@reversicle212 go with mathematics section in hackerrank and try math tag questions in codeforces

    • @reversicle212
      @reversicle212 Před 3 lety +1

      @@bothpj9593 thnx man I appreciate your help problem is I don't even know how to do math in that section, I don't even know trigonometry and pre calculus and btw I'm rly rly bad at math, I just want tips on how to LEARN and understand math/programming olympiad maths, like when I see those math olympiad junior grade 8 questions, I don't even know what to do...i wanna know what is the first step/approach to learn those topics like number theory and blah.

    • @bothpj9593
      @bothpj9593 Před 3 lety +4

      @@reversicle212 if you really want to do best in programming at this grade then you have to work hard for real. Try to learn maths of your academic first as fast as you can for this you can take help from youtube it is really a good source for learning you will find all your answers on youtube. Mathematics in programming is sane as the mathematics in your academics. so try to focus on your maths problem solving and then you can practice those by implementing them on programming platforms like hackerrank or hackereath. You can see the solution if you stick in any prblm for the guidance and try to understand the code or tutorials.
      This is great that you are starting programming from the very small standard. I started programming in graduation 😂.
      Hope this will help and you will do great :-).

  • @febryramadhan1743
    @febryramadhan1743 Před 3 lety +115

    Someone like this who makes me insecure about getting a job as a software developer

    • @reapersyndicate9788
      @reapersyndicate9788 Před 3 lety +15

      u will do it with succesfully and u will become rich and change ur life style and maybe 1 day u will help people including me !

    • @just_code
      @just_code Před 3 lety

      me too bro

    • @HendersonHarrisson
      @HendersonHarrisson Před 3 lety +1

      @MrGenerous Exactly

    • @dinmavric5504
      @dinmavric5504 Před 3 lety +9

      There's a difference between software developer and this, you won't do things like this ind evelopment.

    • @nicvac96
      @nicvac96 Před 3 lety +1

      This guy is a monster dude.. even among the competitive developers

  • @visualdivider639
    @visualdivider639 Před 3 lety +57

    1:05:50 "almost very nice" I see what you did there Errichto

  • @Wackie382
    @Wackie382 Před 3 lety +2

    This is one of those rare videos where you have no idea what's going on, but it's fun to watch anyway.

  • @Fajaar.b
    @Fajaar.b Před 3 lety +30

    Bro, i even not a programmer and dont know what the hell is going on. But i like when you think the solution and try to solve the problems. You got a new subscribers here.

    • @user-jn1px7rp3h
      @user-jn1px7rp3h Před 3 lety +1

      Even among the competitive programmers, he is a monster :)

    • @rupertacuesta
      @rupertacuesta Před 3 lety +2

      remember, programming is *about* problem solving. Coding is just the tool to carry out your solution😉

    • @militerupgrade2540
      @militerupgrade2540 Před 3 lety +1

      maksud kamu

  • @raviteja5084
    @raviteja5084 Před 3 lety +5

    One of the Best Coder I have seen in my life.Please make some videos on Interview Problems.

  • @anshuman5554
    @anshuman5554 Před 3 lety

    Errichto, when are graph lectures coming?

  • @Rossjordan
    @Rossjordan Před 3 lety +2

    This is on another level! I cant watch it anymore - F**Ked up

  • @makiccs
    @makiccs Před 3 lety +3

    I like to watch videos like this and act like I know what I'm watching.

  • @TheRazenHD
    @TheRazenHD Před 3 lety +2

    Please can we have a Keyboard POV? I'm amazed, and watching you solve a problem is really satisfying, but that AMSR you make is mamamia

  • @user-fh1mh6ci8m
    @user-fh1mh6ci8m Před 3 lety +5

    what exactly did you study in college ?

  • @kanhaiyajaiswal__23
    @kanhaiyajaiswal__23 Před 3 lety

    can you send name which compiler you use for coding?

  • @eyeoftruth4405
    @eyeoftruth4405 Před 3 lety

    Do you know how to bypass FB identity check? I lost a very old account :(

  • @raviteja5084
    @raviteja5084 Před 3 lety

    All the Best Bro for round 2.Hope I'll see u in the top 200 in round 2 to advance round3.

    • @Errichto
      @Errichto  Před 3 lety +1

      I'm obviously trying to get to the finals.

    • @kreftl
      @kreftl Před 3 lety

      lol

  • @teamsupport1682
    @teamsupport1682 Před 3 lety

    Hi how can I make "geany filename" command create a new file and write my template on it .

  • @alexandrupop8701
    @alexandrupop8701 Před 3 lety +1

    You have protection ddios?
    Protection for flood bro.

  • @salvadorcoimbra9863
    @salvadorcoimbra9863 Před 3 lety

    this is awesome !

  • @yousseflakrari1131
    @yousseflakrari1131 Před 3 lety

    Thanks, great video

  • @mahadifamgate2686
    @mahadifamgate2686 Před 3 lety

    Hey boss ,,, can u suggest me a good model of monitor , to studing code, in budget $200 ,,,, 2 of 22" or 1 of 24" what will be better !

  • @cilantrin4403
    @cilantrin4403 Před 3 lety +20

    Now I feel dump.

  • @arai_the_legend
    @arai_the_legend Před 3 lety

    Which IDE due you use?

  • @aymanriadsolh5605
    @aymanriadsolh5605 Před 3 lety

    can you make a video about CEOI problems ? it would be cool

  • @Youdude2
    @Youdude2 Před 3 lety

    what security vulnerability did he exploit in this hacker cup?

  • @kappalelekampank5469
    @kappalelekampank5469 Před 3 lety

    what text editor did u use?

  • @tarikjukan4535
    @tarikjukan4535 Před 3 lety

    What is name of this program, who are you use for work in this video?

  • @MichuTV7
    @MichuTV7 Před 3 lety

    Szacun :D
    Jesteś Polakiem?

  • @Siraj2602
    @Siraj2602 Před 3 lety

    Can someone give efficient solution for following question.
    Q) Given two array of numbers each containing a permutation of numbers from 1....N . Find number of unordered triplets (a,b,c) which occur in same relative order (a,b,c) in both arrays.

  • @jibinvarghese3066
    @jibinvarghese3066 Před 3 lety

    Recommended for all the future hackers

  • @DSCuber-28-01-2019
    @DSCuber-28-01-2019 Před 3 lety +1

    Can we use another language than c++ in this competitions?

  • @abhishek_k_jha
    @abhishek_k_jha Před 3 lety

    Can you please share your template. It is amazing to see you code.

  • @jel1951
    @jel1951 Před 3 lety +1

    Why don’t you work for a major software company?

  • @kiedro3835
    @kiedro3835 Před 3 lety

    Are you from Poland?

  • @MacioSzekTV
    @MacioSzekTV Před 3 lety

    nice!

  • @swattikkarma7217
    @swattikkarma7217 Před 3 lety

    How to print a number n times in C

  • @program1619
    @program1619 Před 3 lety

    Nagrałbyś poradniki do c++ po polsku?

  • @chandreshwarkumawat9703
    @chandreshwarkumawat9703 Před 3 lety +1

    I am new to competitive programming and I'm very comfortable in coding with python but I saw a lot of coders are using c++ for competitive programming. Should I also shift to c++ or should I keep coding in python?

    • @TechWithSabri
      @TechWithSabri Před 3 lety

      the same here
      I think it depends on what you need to do later

    • @magic_2942
      @magic_2942 Před 3 lety

      keep in mind that python is very slow and mostly you will exceed time limit

    • @ranveerrandhawa282
      @ranveerrandhawa282 Před 3 lety +2

      You can continue in Python, comfortably till a certain level which is near expert or low candidate master(I would say). After that lots of the problems become a bit tight for python. Also, fun fact, conquer of tourist is a grandmaster who uses python.

    • @chandreshwarkumawat9703
      @chandreshwarkumawat9703 Před 3 lety

      @@magic_2942 But I think they give us more time for python.time limit 1 sec for cpp and 5 sec for python

    • @chandreshwarkumawat9703
      @chandreshwarkumawat9703 Před 3 lety

      @@ranveerrandhawa282 So to go above expert level using cpp will be helpful?

  • @nosiphoshezi825
    @nosiphoshezi825 Před 3 lety

    What is going on here... it looks nice but I have no idea what the debugging gong he was doing

  • @amirdujak5274
    @amirdujak5274 Před 3 lety

    Yes

  • @windome4rle
    @windome4rle Před 3 lety

    my god. You made a monster.

  • @mkv9105
    @mkv9105 Před 3 lety

    How do I get the problems? I really will love to try them out.
    Anybody ?

  • @yorumcuturk
    @yorumcuturk Před 3 lety +1

    I can see that people doesn't understand him. If you guys learn Segment Trees, you can understand this guy.

  • @soumyajjaldas4319
    @soumyajjaldas4319 Před 3 lety

    Can you please tech us concentric square

  • @sergioarturofp7524
    @sergioarturofp7524 Před 3 lety +2

    Idk what he's doing but congrats dude

  • @mathmr7492
    @mathmr7492 Před 3 lety

    Hello.I love your video ❤️❤️❤️
    But I don't understand what are you dong in this video

  • @maciejkrakowczyk8952
    @maciejkrakowczyk8952 Před 3 lety +1

    Brawo :D

  • @kalgis1430
    @kalgis1430 Před 3 lety

    nieźle Kamil

  • @samrat_malisetti
    @samrat_malisetti Před 3 lety

    Waiting for Global Round 10 screen Cast ..!!

    • @Errichto
      @Errichto  Před 3 lety +1

      I post screencasts of regular contests on my 2nd channel czcams.com/users/errichto2

  • @KBK_dz
    @KBK_dz Před 3 lety +18

    Why im watching this ? 😂

  • @woms
    @woms Před 3 lety

    King

  • @DSCuber-28-01-2019
    @DSCuber-28-01-2019 Před 3 lety +1

    Did he finished the B question in 10 min!!!!??????

  • @hackstreet781
    @hackstreet781 Před 3 lety

    What is your name?

  • @hocuspocus4018
    @hocuspocus4018 Před 3 lety

    You are super cool I wish to be like you

  • @HDbIce-oj3wv
    @HDbIce-oj3wv Před 3 lety

    Why geany over vim? Pls reply

    • @Errichto
      @Errichto  Před 3 lety

      I get that question once a week, see faq in description

    • @HDbIce-oj3wv
      @HDbIce-oj3wv Před 3 lety

      @@Errichto Thank you 😍

  • @ashutoshchakraborty6858
    @ashutoshchakraborty6858 Před 3 lety +5

    31:07 was that siren head?

  • @mader5943
    @mader5943 Před 3 lety

    Окей дюд, ит вос вери интерестинг видео
    !

  • @weiwenang1302
    @weiwenang1302 Před 3 lety +2

    this prove my algorithm understand not up to there because i dont understand what he doing. what have I be doing in my cs course

  • @NewEliteOrder
    @NewEliteOrder Před 3 lety

    Fortuitous suggested video.. don't comprehend the least minimum of the content, tho the intrigue held my interest.

  • @silverioquinonesbelmontes8596

    Son GENIOS BOB , GEEENIOS!

  • @gouthamsidhardha681
    @gouthamsidhardha681 Před 3 lety +2

    watching at midnight. i have no idea whats going on

  • @nihal9926
    @nihal9926 Před 3 lety

    Hello Errichto 🥰

  • @HiPh0Plover1
    @HiPh0Plover1 Před 3 lety

    why codeforces is so important to you ? is it because of the visibility it gives you ?

  • @VivekGupta-bk2ph
    @VivekGupta-bk2ph Před 3 lety +1

    Where is gennady?

  • @rhadamez
    @rhadamez Před 3 lety +5

    Well, after all this time...I'm not a real developer. Gonna find another thing to do in my life.

  • @maximomora4656
    @maximomora4656 Před 3 lety

    hello man i fan you

  • @pyrkaczzawodowiec7124
    @pyrkaczzawodowiec7124 Před 3 lety

    Jesteś Polakiem?

  • @jarentubal6334
    @jarentubal6334 Před 3 lety +2

    everytime i try to watch this itgived me motivation to learn programming but im just too lazy and dont know where to start lol

    • @mini5183
      @mini5183 Před 3 lety +1

      Go with any easy like Python and once you learn the basics you will yourself know what to do next

    • @TheOlivarria
      @TheOlivarria Před 3 lety +4

      Dont be intimidated by this, this is nothing you will find during your programming journey, unless you choose to learn the algorithms. You will be fine by using simple arithmetic in 99% of the cases. What the video shows is competitive programming, you need to know the basics of algorithms like binary search, graph theory, etc. (Some jobs require you to know algorithms just for the interview, but you will not use them in the job)

    • @jarentubal6334
      @jarentubal6334 Před 3 lety +1

      @@TheOlivarria im an IT student 2nd year . i know a little bit of java , python , c# , web design , sql , app development using java but my problem is i dont know what to do next . Should i watch more tutorials from youtube or should i do projects ? but i really dont know what projects should i do lol . Any tipss ?

    • @TheOlivarria
      @TheOlivarria Před 3 lety

      Chaoso Definitely make a project. Your knowledge will expand exponentially doing your first project all the way from scratch to the final deployment. If you do only what they teach you in school you will only be another programmer, what matters is what you do in your house in your own time. So decide what you want to build, it doesn’t need to be innovative or super creative, and just build it.

    • @TheProdiigy100
      @TheProdiigy100 Před 3 lety

      @@jarentubal6334 i would say learn data structures and algorithms and become an expert in at least one of those languages, personally i would do Python but whatever works for you.

  • @jeisonmunoz1862
    @jeisonmunoz1862 Před 3 lety +4

    Alguien que hable español y me explique un poco que es lo que hace.

    • @lalitor
      @lalitor Před 3 lety +5

      Está en un concurso de programación (muy alto nivel), durante el vídeo lee los problemas y los programa

    • @maiq297
      @maiq297 Před 3 lety

      @@lalitor nAZEEE, no entiendo un pingo pero me gusta igual

  • @kozhevnik3467
    @kozhevnik3467 Před 3 lety

    Взломал фейсбук?

  • @dkayk1985
    @dkayk1985 Před 3 lety +15

    Hello big fan 😀 can you wish me for Cp journey

  • @annheong8111
    @annheong8111 Před 3 lety

    🥰

  • @Limeonc
    @Limeonc Před 3 lety

    Ini buata apa cuuy

  • @darkfen
    @darkfen Před 3 lety

    Cool here before youtube recommends this to someone in 2026

  • @MsNick991
    @MsNick991 Před 3 lety

    For a moment I thought you're performing a brute force on FB reset code at 1:05:16

  • @bc201a4
    @bc201a4 Před 3 lety

    이 비디오는 내가 영어를 배워야 하는 이유가 되겠다
    좋은질의 컨텐츠 더 영어

  • @stickyikkymakes4639
    @stickyikkymakes4639 Před 3 lety +2

    im japanese and i only understand 2% what he speaks but i watched till the end

    • @manhucvu6894
      @manhucvu6894 Před 3 lety

      I dont know what he coding but i love this screen❤

  • @back-enddeveloper2344
    @back-enddeveloper2344 Před 3 lety

    Kamil are you from Azerbaijan? if you nation azerbaijan than pls send me message I will tel you a few word about programming language.

  • @743Manishkumar
    @743Manishkumar Před 3 lety +2

    Fan of yours man...you should start udemy course on c++ and competitive programming

    • @Errichto
      @Errichto  Před 3 lety

      I'm sure there are already some courses there ;p

  • @ksarqu1858
    @ksarqu1858 Před 3 lety

    nie wiem o co kaman ale ogladam XD

  • @michaeljohnbaco2480
    @michaeljohnbaco2480 Před 3 lety

    wtf coding insane asf

    • @michaeljohnbaco2480
      @michaeljohnbaco2480 Před 3 lety

      btw. what language did he use? im not familiar on his coding structures. thank you

  • @devix3187
    @devix3187 Před 3 lety

    This guy can hack NASA with html

  • @rudymorais7018
    @rudymorais7018 Před 3 lety +1

    broooo, ur glasses are not straight , be careful :D

  • @baton4iki
    @baton4iki Před 3 lety

    nothing is clear but very interesting

  • @sidodjeeduboschit2883
    @sidodjeeduboschit2883 Před 3 lety

    мужик...

  • @min-k2689
    @min-k2689 Před 3 lety

    Now this is computer science not bunch of copy paste from edaboard

  • @hepihd7467
    @hepihd7467 Před 3 lety

    jak ty polak co nie?

  • @dhrumil8041
    @dhrumil8041 Před 3 lety

    Don't you change your t-shirt after waking up?

    • @Errichto
      @Errichto  Před 3 lety +4

      I did! Both t-shirts were white but the one from yesterday had a bunch of algorithm names on it, this one has CF logo.

  • @pawelmam3
    @pawelmam3 Před 3 lety

    Jakie to proste hahahah

  • @teamsable7651
    @teamsable7651 Před 3 lety

    Hackea ni cuenta de Facebook😅

  • @florinnn9060
    @florinnn9060 Před 3 lety

    the background scares me a lot =/

  • @theoneandonlyevra
    @theoneandonlyevra Před 3 lety

    please hand cam

  • @bartoszkazmieruk5921
    @bartoszkazmieruk5921 Před 3 lety

    On jest z Polski xD

  • @VARUN-pk7xq
    @VARUN-pk7xq Před 3 lety

    How can I be like you ,what course should I do ,plz sir help me plz suggest me something ! That can I follow in daily basis to improve coding 🙏🙏🙏🙏🙏♥️♥️♥️♥️

  • @tahak7411
    @tahak7411 Před 3 lety

    these videos make me feel so damn stupid.

  • @ksarqu1858
    @ksarqu1858 Před 3 lety

    oj kamil o co ci chodzxi

  • @vicentrichardson593
    @vicentrichardson593 Před 3 lety

    He estado buscando ayuda para recuperar mi cuenta perdida. Todo gracias a King_Spyy en Instagram, es un pirata informático legítimo.

  • @octo4647
    @octo4647 Před 3 lety +1

    int n,
    n = i have no idea what the fuck is going on
    n

  • @nahuelbruna6592
    @nahuelbruna6592 Před 3 lety

    ...like for my part

  • @atschuk19
    @atschuk19 Před 3 lety

    Why do you want to be a hacker ? 😳

  • @stevenmendoza3732
    @stevenmendoza3732 Před 3 lety

    what the hell