Hello! I created a round in ICPC style. It will be held in a private group (link), and it will start at 26/09 14:30 UTC-3 (17:30 UTC). It will last for 4 hours, and you will be given from 9 to 10 problems. I recommend this round for division 2 participants (you are still allowed to participate if you are not a div.2 participant). All the problems are authored by me.

You can participate with a team or individually.

• Thanks for ronak037, Dogelina, manpreet.singh, BohdanPastuschak, Mucosolvan, BlueDiamond, ajit, madlogic, Satwik_Tiwari, aayushabhyarthi and andr0901 for testing the round and providing valuable feedback.
• Thanks for andremfq for introducing me into CP and Codeforces.
• Thanks for MikeMirzayanov for Codeforces and Polygon plataforms. I didn't realize how great Polygon was untill I started using it.

Good luck, and have fun!

Note: To register the round, you need to join the group first. You need to register the group as a participant and not as an spectator to join the round.

UPD: To avoid problems in registering the contest, all group members are now in participant mode (except for the testers). You can roll back this action by your own. Note that if you don't submit or register for the contest your name won't appear in the leaderboard.

UPD: Registrations are open.

UPD: Contest has ended, congratulations to the winners!

• Maksim1744

• arthur.nascimento

• wmrmr

• The Andrades: Policarpo, valkyrja, MarquesLua

• cjoa

UPD: Editorial

Hi! Inspired in this blog, I wanted some data to support my thoughts, so I used codeforces API to plot some graphs. The plots show for each rating what was the average number of problems solved (for lower ratings, there a less users so some unpredictable behavior can happen).

Here, you can see the plot for Codeforces Round 651 (Div. 2):

Note: The x-axis is scalled down, that means that $$$x$$$ is actually $$$100x$$$ (I made in that so that it wont get too poluted).

See other two plots I made:

EDIT: As said by AnandOza and uggi121, due to the new rating system, that peak in the beggining of the graphs are new accounts being registered.

UPD Here is the plot for Codeforces Round 652 (Div. 2):

Hi! I created this blogpost for the ones who want to share with other coders problems in CodeForces that they enjoy. If you want to share a problem please comment bellow.

Thanks!

EDIT Here is the list of problems that were commented below sorted by difficulty:

• Prefix-Sufix Palindrome *1800
• Python Indentation *1800
• Shortest Path Problem? *2400
• Prefix Product Squence *2600
• Cyclical Quest *2700
• Radio Stations *2800