Please contest writers add more diverse start time for different time zoners, BIG THANK YOU R990 writers!!

We all should share the joy and share the pain

Rayan Programming Contest 2024 — Selection Nov/30/2024 06:35UTC-8

Educational Codeforces Round 172 (Rated for Div. 2) Dec/02/2024 06:35UTC-8

Codeforces Round 990 (Div. 2) Dec/02/2024 22:05UTC-8

Codeforces Round (Div. 2) Dec/08/2024 06:35UTC-8

Codeforces Round (Div. 4) Dec/15/2024 06:35UTC-8

Educational Codeforces Round 173 Dec/22/2024 06:35UTC-8

As a community, we deeply miss the GCJ, and while hope may seem small at this point, let's not give up just yet. Instead, let's come together and make an effort to try something new. Even if the odds are slim, taking action could lead to unexpected outcomes. It's better to attempt and see what unfolds, rather than simply accepting the current situation. After all, sometimes even the smallest steps can spark meaningful change. So let's give it a shot and see where it takes us.

sign the petition: https://www.change.org/reinstate_gcj

It would be nice to have an option to participate in out of contest. For example, due to strict time zone difference only available to join second half but don't wanna mess up my tiny little rating...

cc: MikeMirzayanov

Codechef contest calendar is empty and haven't seen the traditional contests except the Starters for a while. Did they lost interest in CP?

If you click on Submit from a problem, [Problem] should keep the origin problem but now it's just [Choose problem].

I was playing with the CodeForces API and had a chance to cumulate the tag stats for various diff problems. Hope it helps you to prioritize the practice problem choice.

########### Diff: 1600

1 implementation: 109

2 greedy: 96

3 math: 84

4 brute-force: 51

5 constructive-algorithms: 50

########### Diff: 1700

1 implementation: 97

2 math: 91

3 greedy: 88

4 constructive-algorithms: 57

5 dp: 54

########### Diff: 1800

1 greedy: 96

2 implementation: 77

3 math: 67

4 dp: 63

5 constructive-algorithms: 51

########### Diff: 1900

1 dp: 91

2 greedy: 89

3 data-structures: 64

4 math: 60

5 implementation: 56

########### Diff: 2000

1 dp: 98

2 greedy: 86

3 math: 62

4 data-structures: 55

5 implementation: 52

########### Diff: 2100-2400

1 dp: 342

2 data-structures: 272

3 math: 229

4 greedy: 208

5 graphs: 196

########### Diff: 2500-2900

1 dp: 260

2 data-structures: 200

3 math: 166

4 graphs: 132

5 trees: 114

########### Diff: 3000-4000

1 data-structures: 119

2 dp: 101

3 math: 88

4 trees: 62

5 graphs: 61

I made a virtual copy contest of "Educational DP Contest" that was held a while ago at atcoder but the problems are very selective and provide very good opportunity of DP practice. It has 26 problems and you have 26 days to complete it.

Contest URL: (you need an atcoder account for submission) https://not-522.appspot.com/contest/5727615723765760

Feel free to join us.

topcoder has 2-3 rounds in a month, atcoder holds once in a week, but CF has many rounds in a week. Just in my opinion, CF should limit the round numbers to control the contents levels and quality.

Hello,

Yesterday during CFR #429, I something magical thing happened to me.

Just before the end of contest, somehow my problem D was submitted and accepted!!!!

I already gave up the problem D and E due to the hardness (as usually), and I was trying to fix my hacked problem B. I think someone's submission was counted to mine, but at the end system judged that I cheated and copied :(

Is there someone else who have seen this issue?

I hope the admin will fix it, and rejudge my submission.

Please share us your practice or lesson methods! Personally, I take part in online rounds, but still need to impove something. Thanks in advance!

like this https://www.topcoder.com/community/events/

Please share us your practice or lesson methods! Personally, I take part in online rounds, but still need to impove something. Thanks in advance!