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До соревнования Codeforces Round #699 (Div. 2) 2 дня
mostafa.saad.fci
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mostafa.saad.fci
7 месяцев назад
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Codeforces (c) Copyright 2010-2021 Михаил Мирзаянов
Соревнования по программированию 2.0
Время на сервере: 03.02.2021 08:13:43 (i2).
Десктопная версия, переключиться на мобильную .
Releasing my private problems lists for ICPC/IOI/Online training
Updating from time to time to reach more guys..
Since 2019 and I receive very positive feedback about the quality of my problem selections in my international supervision . I intended to make my problem lists public one day to help trainees to train in a more efficient and effective way.
This program started in 2016 and has been changed and improved a lot based on the received feedback from my trainees. I ended up with 2 big lists of problems: one for guys training toward IOI and another for ICPC/OnlineContest styles. Specifically 4 critical features:
Problem difficulty level [1-10] per problem is a manual weighted average of the assigned levels from my trainees’ sheets. A common complaint about 'online tools/ways for ranking problems by difficulty' is that they are not accurate. The issue is more severe for OI problems.
Problem importance level : ~ 5 levels (important, very interesting, interesting, good, normal/boring/repeated). Trainees solve a lot of problems that many of them are repeated or boring ideas. To maximize the training outcomes, one should train on unique/interesting ideas much more. Something that most of us can’t figure out easily.
Editorials . Many interesting problems may not have editorials (or have hard to understand editorials). I used to ask trainees to write some summary of how they solved a problem. Circulating these editorials between my trainees made it easy for them to get problems solved.
Submissions info : In Trainees Submissions page, ~25k submissions of my trainees. Per problem info (status, submissions count, times for reading/thinking/coding/debugging, category, subjective level, and a comment. You may use it to know some details about how others performed with the solved problem.
I just have a small request: could you perhaps create another version of the IOI Level sheet with the category column hidden (to avoid spoilers)?
I thought guys can just fix a notepad file in the level column to hide it. so no need for more copies of the same sheet.
A very fine collection of problems! Already solved a decent amount of them, can't not recommend!
The export options are disabled. Can you enable them so that we can make a copy?
In this stage, It won't be downloadable. Sorry for the inconvenience.
If the motto of release was to get us inspired or tell us how much effort others put in to reach top levels in CP , then it is good. But if you really want us to get benefit from this, kindly allow us to download it.
How do you intend this list to be used? Currently there is no way to mark which problems are done and which aren't, unless you manually write down all problems you did and didn't solve (which is essentially making a manual copy of the list). It is a very big inconvenience.
I don't agree with your reasoning. I trained enough people in my life to different levels and most of them don't solve that much per year. It is little inconvenience that is all.
I intend to make it downloadable once the list is stable. I will do several updates for it the real inconvenience will be for others to realize the updates in levels/links/additions.
May I use this opportunity to ask how others are using the document to practice, I mean what strategies of practice to adopt. I myself am not able to devise good practice methods and eventually end up wasting lot of time.
Is this sheet suitable to be practised by specialist or expert range in cf?
Thank you so much for your efforts! The problems are indeed amazing and on point 90% of the time from my experience in the training.
Level wise, they were just outside my comfort zone but not too hard. And tricks wise, I remember learning a small new thing with almost every problem, they helped me a lot in my ICPC trainings. Especially when reading the official editorials.
Also the system of the supervisions helped a lot; since you tell us to submit our solutions on github and explain our approach in the cpp file , I always found helpful and diverse github solutions made by other trainees with nicely explained approaches to learn from. That was essential with UVa and ICPC Archive problems; which didn't have official solutions and any code on other github repos didn't have explained approaches with them.
Whatever your level is, I can't recommend this enough! It will save you tons of time and you'll see big improvements if you stick to it.
Glad that you enjoyed the experience.
mostafa.saad.fci thanks for making this public. can you please make the (make a copy option) available?
Can someone correlate the difficulty level(1-10) of problems in the sheet with codeforces difficulty(div2A-E/div1A-E)?
could you please enable coping columns from the sheet ?
seriously ? WilliamLin mentioned on your sheets is the @tmwilliamlin168 ?
Thank you so much. It will be next on my to-do list after finishing your junior training sheet ^_^.
If the motto of release was to get us inspired or tell us how much effort others put in to reach top levels in CP , then it is good. But if you really want us to get benefit from this, kindly allow us to download it.
Try becoming master before making "training" sheets for others.
Lol, before talking shit about someone, try to know his background!
His "background" doesn't matter, if he can't get at least a master or something rating, he isn't a coach, although I get it,you can compile good OI questions and good quality questions from other websites, give to some people to solve it and act "coach".
He left competing a long time before. Btw, he is the master of masters, i hope you get my point. Anyway, i don't want to play a comment-comment game with you. So, Peace!!
"Masters of Master" No he isn't. Also, you poked first, if you don't want to "play comment-comment game", then remember not to put your BS to anyone who isn't even writing it for you.Peace!!
"Omg" quality must be rare for you.
Looks like you have a problem with the word "coach". Let me rephrase it a little bit: supervisor. He supervises GM+ coders. By analyzing their submission statistics, he tries to find their weaknesses and assign appropriate problems to them. He gathers and analyzes data and identifies best problems for improvement. He doesn't teach them problem-solving (which I believe, doesn't need to be "taught"). One doesn't need to be master in CF to do any of these. He/she just needs to have time and willingness to volunteer. He has both, which is quite praiseworthy.
Thank You,this is a good explanation."Coach" is really misleading for me.
Le-Jour oil your own machine , you are unrated user and suggesting others to become master , lol
I don't "coach" others, do I? As for me being unrated, it will change some day.
You should show some respect to teachers and coaches . they spend so much time to teach others. try to know his background! Let me tell you about a legendary coach. andrewzta is the best coder in this community . many Legendary Grandmasters are his student . but he is in International Grandmaster stage . Legends don't care about rating .
Some problems' 'importance' cell is empty. Are those problems less important?
I have almost finished the C1 page of your Junior Training Sheet. Can I start this sheet already?
No, finish the sheet. Its problems already part of this big list.
Releasing my private problems lists for ICPC/IOI/Online... - Codeforces
private problems - Translation into Russian - examples... | Reverso Context
Private probation - Wikipedia
What are private problems ? - Answers
Private Solutions | Boundless Economics
Translation of "private problems" in Russian
I think it's a little weird that you've been sharing our family's private problems with a stranger.
Мне кажется немного странным, что ты делишься личными проблемами семьи с незнакомкой.
In all democratic countries some issues are avoided or at least treated as private problems , precisely because they cannot be solved by compromise.
Во всех демократических странах некоторых тем избегают, или по крайней мере считают их личными проблемами , как раз потому, что они неразрешимы путем компромиссов.
The "I" tries to relieve both social and private problems by using powerful affirmative cultural images.
«Я» пытается решить социальные и личные проблемы , используя сильные позитивные культурные образы.
The key factor is the combination of private problems with public issues: the combination of troubles that occur within the individual's immediate milieu and relations with other people with matters that have to do with institutions of an historical society as a whole.
Ключевым фактором является сочетание частных проблем и общественных вопросов: сочетания проблем, возникающих у самого человека и в его отношениях с другими людьми, с вопросами, которые имеют отношение непосредственно к институтам общества определенной эпохи в целом.
And, instead of solving all sorts of economically caused private problems , laid-off workers can concentrate on finding new and more future-oriented jobs.
И вместо того, чтобы решать все вопросы, возникшие из-за экономических проблем , уволенные рабочие могут сконцентрироваться на поиске новой, более ориентированной на будущее работы.
WE CAN TAKE CARE OF YOUR PRIVATE PROBLEMS
ПОЗАБОТИМСЯ О ВАШИХ ЛИЧНЫХ ПРОБЛЕМАХ
In all democratic countries some issues are avoided or at least treated as private problems , precisely because they cannot be solved by compromise. Such issues are history and memory.
Во всех демократических странах люди ссорятся, затем они вступают в переговоры и заключают компромиссы.
and we have to sort out our private problems between ourselves
И грязное белье лучше стирать дома.
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