mostafa.saad.fci's blog

By mostafa.saad.fci, history, 19 months ago, In English

I used to encourage newcomers in our community to train using this sheet to avoid random training. By the end of the sheet, one will be very good up to Div2-D. It has been refined several times based on the received feedback.

Sheet link https://goo.gl/unDETI

Please, check out the sheet before reading. The sheet is

  • Complete and consistent roadmap for newcomers: What to solve & algorithms to learn in order

  • In the bottom row, there are different sheet pages such as Faq, Topics, CF-C2

  • CF-C1, C2 are (Codeforces Div2 C problems (or similar level from other OJs), but from easy to hard). Same for CF-D1, D2, D3

  • Covering most of the topics needed up to Codeforces Div2-D

  • Problems increase in difficulty per topic with intermediate easy/medium problems + ad-hoc problems

  • Speed problems to maintain speed goals


One can train in one of the following ways:

A) Blind-Order training style

  • Problems are distributed in sheets CF-A, CF-B, CF-C1, ....CF-D3

  • It targets learning the knowledge/skills in a consistent and balanced way

  • Every sheet page is on average harder than the previous sheet page

  • This is my recommended way, though most camps/training-approaches don't use this style

B) Topics-Based training style

  • See the sheet page (Topics1). It has the same sheet problems (CF-A to CF-D3) ordered by category and level, around 950 problems. Also checkout Topics2 page

  • Ideas Quality column: P5 (important), P4(very interesting), P3(interesting), P2(good), P1(ok), Empty (normal)

  • You can train using Blind-Order, and use Topics page as a guide to skip some problems

  • Advantage: Mastering the algorithm till solving some hard problems in a short time

  • Disadvantage: Discovering the algorithm behind the problem is an important skill. Given that you know the topic, you lose a good space to improve this skill

  • Disadvantage: Being in the mode of specific algorithm lets you solve many of it easier. However, when solving in real contests, your mind is not so active on the specific topic

 
 
 
 
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19 months ago, # |
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it would be nice to have a training roadmap for oldcomers like me

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19 months ago, # |
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It would be awesome if you could add some English tutorials. Still, your sheet is great. Thank you. :)

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19 months ago, # |
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Thanks for your hard work Mostafa!

I just wanted to ask something and please do not take it the wrong way. I am considering of following your training roadmap, but this is a big commitment, so I would like to make sure it's a good roadmap. For me, it seems weird that you have only taken part in 9 contests and your score is close to 1600, but still proclaim to have the roadmap that can make you able to solve Div2-D problems. For this I would like to ask, is there something more you have been working on (are you in other platforms with a better rating or something)?

I know you don't have to convince me that your roadmap is good or that it works. And I do appreciate all the effort and work you put on it.

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    19 months ago, # ^ |
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    still proclaim to have the roadmap that can make you able to solve Div2-D problems

    I think that it may be because he has successfully trained some people to that level (using that roadmap).

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    19 months ago, # ^ |
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    • I am an old guy. In our days UVA and Topcoder were the main training platforms for me. Before stopping CP, Codeforces was launched, that is why I don't have competitions history

    • There are a lot of good people who will have low rate. High rate in contests is function in several factors, such as proper handling for online contests pressure (e.g. a lot of people think how others will think about their rate changes), accuracy (getting problem AC after how many submissions), skills (which level you can solve/algorithms you know) and finally and more importantly speed. In Div2, there are lot of people who can solve e.g. Div2-E after the contest, but not fast enough to get in the contest. Similarly for Div1-D guys. The assumption low rate => low skills is wrong.

    • I guess I always had troubles in online contests, but I was a very good team player, such as ICPC.

    • You can some about my background from here.

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5 months ago, # |
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what should be the recommended way for beginning with competitive programming

Blind order or Topics based

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3 months ago, # |
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Hey mostafa.saad.fci, although I don't understand arabic, the problem sheets are amazing! I have solved most of the questions from B and am almost done with C1 over the past two months. My rating has gone up like magic! Thanks for the sheet!

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    3 months ago, # ^ |
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    Thanks a lot for this useful feedback :)

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    3 months ago, # ^ |
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    Sir, I am a newbie for almost 1.5 years. I don't know that should I practice according to this sheet or not.

    I see your rating graph and surprised after looking at the increase in the last months to the present. I just wanna know how much did your ratings rose after practicing according to this sheet.

    Please tell me that and also give advice that should I practice according to this sheet?

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      3 months ago, # ^ |
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      Apart from the sheet, I also practiced on InterviewBit/Leetcode, which may have helped in the boost to 1400. But spending time on the sheet exposes one to a lot of good questions.

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    3 months ago, # ^ |
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    as far i know, in the problem sheets there are around 400 problems in B and C1, but over the past two months you solved total 120+ problems with average 1400 difficulty in CF including contests. Anyway, congrats!!
    I also practiced last 2 months thoroughly and solved good amount of problems with decent(average 1500) difficulty but still i could not make it to expert :(

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    2 months ago, # ^ |
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    hey is solving this sheet worth it? i am confused? can i trust spending time in sheet?please answer?

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      2 months ago, # ^ |
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      bro,Yes. Absolutely Yes. The Questions are pretty Good. They are mostly challenging.I have Done mostly sheets A, B ,C1, C2 (leaving the optional questions ). My rating increased upto 1730 using that only. and after that I stopped solving them (not because they are not worthy , but because I felt I need to take some break from that because the questions became more tough ).

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        2 months ago, # ^ |
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        In btw while Doing if you find things difficult then refer other sources , I mean don't just stick onto the codes that he gives only.

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        2 months ago, # ^ |
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        thank you! should i solve them like A,B,C,D?or blind order style?

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          2 months ago, # ^ |
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          solving sheet A ,then sheet B .... is only blind order style i think. anyways I solved like first sheet A then B the C1 ...

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      2 months ago, # ^ |
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      .

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        5 weeks ago, # ^ |
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        There are separated tabs, A, B, C1, .... In each there are links for problem either in codeforces, UVA or SPOJ.

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3 months ago, # |
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Sir, you must be red/orange in some other platform. Your sheet is helping a lot.
Please add some English video tutorial.

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    2 months ago, # ^ |
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    bro? is solving this sheet worth it? how it helped you? can u tell me? please

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3 months ago, # |
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great motivation for me

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2 months ago, # |
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where

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5 weeks ago, # |
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mostafa.saad.fci I can solve almost all Division 2-D, and a few Division 2-E. What should I be follow now?

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8 days ago, # |
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I am solving this sheet,is it worth solving.whenever i get stuck i read codeforces editorial because i don't know Arabic.Do i need to watch your videos,i mean is it compulsory, most important question is it worth solving..plz any info

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7 days ago, # |
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Well, my question is pretty naive.But,can please someone help me to access the problems of the sheet.