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!