🌐
Codeforces
codeforces.com › problemset
Problemset - Codeforces
Problemset · Groups · Rating · Edu · API · Calendar · Help · → Pay attention · Before contest Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2) 3 days Register now » · *has extra registration · → Filter Problems · Main · acmsguru | Problems ·
Gym
Codeforces. Programming competitions and contests, programming community
CF leaderboard
Codeforces. Programming competitions and contests, programming community
Codeforces Contests
Codeforces. Programming competitions and contests, programming community
Tourist
FelixArg → Educational Codeforces Round 189 [Rated for Div. 2] ... muratraqli01 → From Beginner to Problem Solver: How I Improved My Competitive Programming Thinking
🌐
Codeforces
codeforces.com › blog › entry › 45307
Interactive Problems: Guide for Participants - Codeforces
We wish you accepted solutions. Once again, you can solve simple interactive problem here http://codeforces.com/gym/101021/problem/1
Discussions

Gave the first contest in Codeforces after solving 300 problems in LC .UNable to solve a single problem
CF D2 A's are just pure mindset thing, like you have to assume that its an easy problem so there has to be an easy solution and just guess by looking at the sample testcases, The moment you try to work through problem statement its a downhill imo. More on reddit.com
🌐 r/codeforces
17
33
December 20, 2024
From a real world perspective, how hard are those 2500 problems?
Real Answer: Most 3500(hardest on CodeForces) problems are around graph theory, and have real world applications in networking and logistics. Database algorithms use a lot of those algorithms too.. Cool fact: Most existing ISP, database, and RF infrastructure uses none of those algorithms and are using inefficient garbage from the last decades of the twentieth century.. They all charged their funding sources(a lot of BEAD funded grants) to implement it all, though.. You paid.. lol Another cool fact: Being top ranked on CodeForces and AtCoder doesn't help with jobs.. Most of the the top-ten on both are at AI startups that have only done mediocre failed products. Like Devin.AI which has the #1 competitive programmer in the world; it's hot garbage that is basically a hacky VSCode plugin with extremely bad AI hallucination.... More on reddit.com
🌐 r/codeforces
118
32
June 6, 2025
🌐
Codeforces
codeforces.com › blog › entry › 116371
How to Effectively Practice CP + Problem Solving Guide - Codeforces
I assume you already have some knowledge and know simple things like binary search and dfs/bfs, but read the footnote if you are complete beginner (never code, solved <50 problems, div2 A/B too difficult, grey or stuck low pupil). First, a quick tl;dr of the practice strategy before a bunch of specifics and explanation: In short, mostly you only need to use codeforces (no matter what contest you're training for), find a rating range where you can solve around ~30-40% of the time on your own, and just grind down the problem set tab in reverse order of id (the default sorting).
🌐
Codeforces
codeforces.com › blog › entry › 98630
Let's solve some hard problems! - Codeforces
Tonight, I will pick twelve 3000 rated problems I haven't solved yet, try solving them, and track my progress. As usual, I will not look at editorials. Hopefully I will be able to solve them all before the year ends. I will not make this my highest priority and I won't try too hard.
🌐
Codeforces
codeforces.com › blog › entry › 95106
The Ultimate Topic List (with Resources, Problems and Templates) - Codeforces
Problemset · Groups · Rating · Edu · API · Calendar · Help · → Pay attention · Before contest Educational Codeforces Round 189 (Rated for Div. 2) 25:44:07 Register now » · → Streams · CF Edu Round 173 Solution Discussion · By aryanc403 · Before stream 27:54:06 ·
🌐
GitHub
github.com › ShazidMashrafi › Codeforces
GitHub - ShazidMashrafi/Codeforces: Contains solutions of Codeforces problems. · GitHub
This page contains my solutions of Codeforces problems.
Starred by 83 users
Forked by 15 users
Languages   C++
🌐
Codeforces
codeforces.com › blog › entry › 55274
Problem Topics - Codeforces
vovuh → Codeforces Round #624 (Div. 3) Editorial · Ascension36 → CF Cheater Highlighter — Now on Chrome Web Store & Firefox Add-ons ... Account_deleted. → What is real-name authentication in Luogu? uday → Came up with a graph problem I can't solve: looking for ideas
Find elsewhere
🌐
Codeforces
codeforces.com › problemset › problem › 231 › A
Problem - 231A - Codeforces
The package for this problem was not updated by the problem writer or Codeforces administration after we've upgraded the judging servers. To adjust the time limit constraint, a solution execution time will be multiplied by 2.
🌐
GitHub
github.com › ankitvashisht12 › 100-questions-of-codeforces
GitHub - ankitvashisht12/100-questions-of-codeforces: List of 100 beginner friendly questions on codeforces · GitHub
List of 100 beginner friendly questions on codeforces · ID · Problem Name · Online Judge · Difficulty Level · Solution · 1 · Young Physicist · Codeforces · 1 · Code · 2 · Beautiful Matrix · Codeforces · 1 · Code · 3 · Queue at the School · Codeforces ·
Starred by 132 users
Forked by 32 users
Languages   C++ 99.5% | Python 0.5%
🌐
Codeforces Problems
cf.kira924age.com
Codeforces Problems
Codeforces Problems is a web application to manage your Codeforces Problems.
🌐
Reddit
reddit.com › r/codeforces › from a real world perspective, how hard are those 2500 problems?
r/codeforces on Reddit: From a real world perspective, how hard are those 2500 problems?
June 6, 2025 -

Hello guys, a bit of my background:

I don't have any degree related to programming, I'm actually bachelor in business.. But I've always been very logical and around 10 years ago I've started to study programming through gamedev in my free time (hardcore mode though, 40h or more per week) on my own by attending to online courses and some solo projects, I've clocked probably around 10000h by now. I've never made an actual career switch from business to programming due to being "hard" to move on from my own business, but I've found in programming something that I really love doing.

And now, at 34yo, I'm really thinking about switching careers and I've been studying to become more "full-stack" coming from a gamedev background. And I'm trying to actually understand the viability of it, I've started to look at my overall level of problem solving compared to who's in the market right now, and for this I've looked into competitive programming to get a grasp.

I've looked into a few problems from lower range (up to 1200) and they felt really "easy", problems around 2000~2500 range are more elegant, but also somewhat easy, just require some more thought, multi-step solution and organization, and also requires to understand the underlying pattern. And honestly, the 3000~3500 problems do feel somewhat hard, but quite manageable given enough time.

So, are those 2500ish problems, for example, seen as hard for most junior programmers or even senior programmers? Or competitive programming is just somewhat of a bubble without underline actually meaningful ranking?


EDIT:

These above 2000 are Harder than I originally thought, I didn't realize that the requirement for performance could be so steep in some of those challenges.

When I say that something is "somewhat easy" or "quite manageable", is accordingly to my expectation due to being a beginner into the competitive problem solving thing, what I see as really hard problems are usually things that I look at and don't have a clue about how I would approach it, which was what I expected when I looked at those higher rankings. I understand that people that have high scores have to solve those problems within a small timeframe, capability that I still don't have and up to a point probably never will (or aspire to).

I understand that this post made me look like an arrogant a*hole, and I'm sorry if it went through that way, I originally intended to understand if this community was somewhat of a bubble (as most of the communities are to some extent) and if the ranking itself does translate to real world performance, and got the answer that I was looking for, thank you.

🌐
YouTube
youtube.com › playlist
Codeforces Problems - YouTube
Share your videos with friends, family, and the world
🌐
Codeforces
codeforces.com
Codeforces
After the end of the contest, you will have 12 hours to hack any solution you want. You will have access to copy any solution and test it locally. You will be given 6 or 7 problems and 2 hours to solve them.
🌐
Quora
quora.com › What-is-a-list-of-easy-problems-on-Codeforces
What is a list of easy problems on Codeforces? - Quora
Answer (1 of 4): Any problem number with with “A” code at the end is considered an easy problem ( if it was asked in a div 2 contest ) . You can also go to the problem sheet page and sort them according to most solved problems, that too ...
🌐
CLIST
clist.by › problems
Problems for codeforces.com - CLIST
Browse through our list of tasks from past competitions. Use our filtering options and problem-rating search to find challenges that match your skill level. For codeforces.com
🌐
Reddit
reddit.com › r › codeforces
r/codeforces
September 22, 2014 - I'm a 3rd year Dual Degree (B.Tech + M.Tech) CSE student at IIT Kanpur and currently, an Expert on Codeforces. Due to all these cheating and most of the companies don't even give a damn to your ratings, I think of forgetting my rating and give all contests as virtual with full dedication. Is it a good idea ? Help building contest temperament. ... Help building contest temperament. ... whenever i give contests, my mind is always anxious and loses grip on problem solving,me practicing and me giving contests are two different people.
🌐
Codeforces
codeforces.com › blog › entry › 62865
Codeforces: Problem Difficulties - Codeforces
Meet a small innovation on Codeforces — difficulties of problems (and at the same time a new widget filtering problems in the archive). For all the problems of the archive, I’ve calculated the difficulties in the scale of the rating of participants. Approximately this means that if the rating of the problem is equal to yours, then on a typical round you would solve the problem with a probability of 0.5.