Unofficial Div 4 Round #2

Revision en11, by ssense, 2021-01-07 22:30:38

Hello Codeforces!

I_Love_YrNameCouldBeHere and I are glad to invite you to Unofficial Div 4 Round #2. Which will take place this Wednesday at 14:35 UTC (The round is over now, but you can still participate virtually). The round will not be rated for any participants since it is unofficial.

You will be given six tasks and two hours to solve them. The problems were created and prepared by ssense and I_Love_YrNameCouldBeHere for users with a rating range from 0 to 1400 but anyone is welcome to participate in the round!

We want to thank everyone who was involved in the round preparation:

Errichto for thorough testing and publishing this round on the gym.

Also, after the contest Errichto will post videos about this contest and the responsibilities of a tester.

UPD: Videos are now up: Fixing A, Testing A, Testing the rest.

Brodicico for help with problems and testing the round.

And a huge thank you to the testers: Errichto, 1-gon, galen_colin, gupta_samarth, arujbansal, Chihai_Ion and Grumpah .

MikeMirzayanov for Polygon and Codeforces platforms.

Even though the contest is unrated, we believe it is an excellent way of practice, especially for Div 4 users.

Remember, if you don't know how to solve one problem, look at others!

UPD 1: Registration available now!

UPD 2: Round is over! We hope you enjoyed the problems and congratulations to the winners!

UPD 3: Editorial is out!

Div. 4 winners:

Not Div.4 Winners:

First to solve each problem:

A: First: Valera_Grinenko

Div. 4 first: anuragdvd

B: First: Geothermal

Div. 4 first: Lelouch_1

C: First: Geothermal

Div. 4 first: Lelouch_1

D: First: Geothermal

Div. 4 first: RamPrabodhInduri

E: First: Geothermal

Div. 4 first: -deleted-

F: First: IgorI

Div. 4 first: sahaun

History

Revisions

Rev. Lang. By When Δ Comment
en11 ssense 2021-01-07 22:30:38 6
en10 ssense 2020-11-26 22:43:09 215 Tiny change: 'are now up\n\n[Fixing A]' -> 'are now up: [Fixing A]'
en9 ssense 2020-11-26 21:20:41 70
en8 ssense 2020-11-25 21:21:09 65 Tiny change: '=%3A&ah=2)(The round' -> '=%3A&ah=2) (The round'
en7 ssense 2020-11-25 19:49:18 65
en6 ssense 2020-11-25 19:40:06 40 Tiny change: 'nners!\n\nDiv. ' -> 'nners!\n\nEditorial will be available shortly!\n\nDiv. '
en5 ssense 2020-11-25 19:39:33 918 Tiny change: 'winners:\n1. [user' -> 'winners:\n\n1. [user'
en4 ssense 2020-11-25 11:33:48 38 Tiny change: 'at others!' -> 'at others!\n\n\nUPD: Registration available now!'
en3 ssense 2020-11-24 20:22:48 79
en2 ssense 2020-11-23 19:24:21 2 Tiny change: '201125T1435&p1=%3A&ah' -> '201125T1430&p1=%3A&ah'
en1 ssense 2020-11-23 18:13:14 1606 Initial revision (published)