git gud lol

The "mendatory waifu pic" has encouraged me to agree.

What about reducing the number of problems

I aryanc403 , fully supports this petition to make the default contest duration to 3 hrs.

Downvoted because of anime propaganda

I would not suggest this for Div 2 rounds at all . This will give unwanted people more time to cheat .

Yep, would appreciate a bit longer contests as well, as I don't wanna git gud in speed.

It's already difficult to find 2 spare hours to participate. Maybe only some contests could be made longer?

While I mainly support this, just a small note, which should be obvious since you're from Korea, is that aside from maybe Russia, Western Europe and maybe India, Codeforces contests' time are pretty unfriendly for participants in a lot of countries (for example in my place most contests ends around 23:35). It would be pretty torturous to keep your mind functioning until 12:35/1:35 (or massively fuck up your sleep schedule, which is IMO equally bad), so this would further increase the wedge between Russia/Western Europe and the rest of the world. Aside from this there is generally no objections, but I think changing contest duration to 3 hours would be best if accompanied with changing starting time to that of AGC, which would allow participants from both East Asia and Europe to participate somewhat comfortably.

I don't know about duration, but I want the time to be shifted 1 hour earlier.

I don't like it, if only the time is made long but other things kept unchanged.

1. Current codeforces rounds already ruins my sleep schedule a lot. Increasing contest time and not changing the starting time destroys sleep even more.
2. This 2-hour duration is quite comfortable and, somehow exciting. It motivates me to practice solving problems fast.

I have a similar experience with recent rounds, but I think it is clouded by the fact that almost all recent rated rounds (for Div. 1) have been combined. Several of these combined rounds had unusually short lengths: Good Bye 2021 and round #758 were only 2 hours, while Hello 2022 was not much better with 2 hours and 15 minutes.

Combined rounds have an infinite number of problems and it takes a lot of "code -> code -> code ..." before we get to the problems that are interesting for us. If the contest is short, it easily creates the effect of "code -> code -> code -> ... -> contest ends".

The last round was not combined (for the first time since mid-November!) but it was a rather easy one: the slowest person to solve ABCD1D2 got a performance of only ~2500. Compare this to ~3000 in #752 and ~2650 in #751.

In conclusion I think that the sense of "code -> code -> code -> ... -> contest ends" is created by having to solve a lot of easy problems before you get to the interesting ones. The solution is to reduce the number of combined rounds and create more contests where a grandmaster is expected to solve about 3 problems.

I have similar experience, but think the duration doesn't matter much, since the cause is too many heavy implementation problems. In addition, 3hr rounds might scare away newbies.

I agree.

Yes, it would be really useful for lower-rated participants like me, as they would get more time to solve problems. In the present scenario, I am still working towards higher difficulty level problems and the contest time gets over. If the contest duration is larger, I will most likely be able to solve the problems that I can potentially solve and would be stuck only on the problems where I can't think of ideas.

In India contest time overlaps with dinner time (8pm — 10pm), Making all contests of 3 hours wont be a good idea ,atleast for me, also I am a specialist

I think that the problem of having all the contest time eaten up by easy/uninteresting problems which are implementation heavy only effects high rated programmers since div. 2 contestants usually are able to solve problems up to their programming skill. If you take a look at the most recent div. 2 you can see that only 6 people AC-ed all the problems. Maybe increasing the time limit only for div. 1s would be a better solution because the majority of div. 2 contestants would have nothing to do the extra hour since the rest of the problems are well above their level.

I could easyly spend 12 hours on the problems of each contest. But that I think is no good advice to increase the contest time. The other way makes more sense. It should be agreed on the duration of the contest, then try to find the optimum problemset for that contest time.

And actually, this is how it works currently. So, no need to change. For me more than two hours does not make a better contest.

As a Roxy simp and noob at speedforces, I would greatly appreciate this.

No please. We already have decent enough number of 2.5 — 3 hour contests and I usually avoid them because 3 hours is too much for me.

I think extending contest time will result in more cheating in the rounds. Also, suppose some solutions to the problems are implementation heavy. In that case, they are the same for everyone, so they don't negatively impact your rank or rating in any manner, and you can upsolve them after the contest. According to me ,instead of increasing the contest time, we can try work on our speed by giving more and more virtual contests and getting better with time.

agree，but make the start time 1 hr earlier please or the Chinese coders will go to bed at 1:35 : (

3h may be too much. But making default time 2.15 seems to me like a very reasonable idea.

It's already hard for me to find a time to participate a 2-hour contest, and now I find this blogpost :(

yamitikoda saiii!... means yes lol

I'm in

Always felt that 120 min here or even 100min at atcoder is too little

I feel 3hr is too much..

People really get this much free time?
Maybe make 3 hrs in holiday

I'll play devil's advocate and put forth another reason against extending contest duration that isn't just "I'm busy and don't have time for longer contests." Codeforces's format has always taken a more speed oriented approach. Problem points decay over time and solving more or harder problems doesn't always mean you beat someone who solved less or easier problems. Part of what makes competitors higher rated isn't just their ability to upsolve hard problems, but their ability to successfully solve these hard problems in contest. So given all of that, 2 hours makes sense as it gives enough time for top competitors to full solve but is also short enough to be speed-oriented.

maybe, but contest starts at 22:35 UTC+8(china) and ends at ~24:35 which is acceptable lengthen it to ~25:35(1:35) maybe a bit too late

so just delete problem A or even B in every div

That sounds very familiar, This is the usual exam duration (3 hours) and 3 hours looks ideal to me. We can even add more problems to make difficulty gradient better.

I'm in

AGC's are waiting for you!

I took a look at the durations for all Div 1 rounds since last year (starting from Codeforces Round 694 (Div. 1)) and these are some stats on this topic:

• There are 36 rounds in total, of which 19 are Div 1 only and 17 are Div 1 + Div 2.
• The most popular duration is 2h15 (11 rounds). 2h and 2h30 come close with 9 and 8 appearances.
• The average duration is 2h23.

I have been requested to bump the blog