ScarletS's blog

By ScarletS, history, 2 months ago, In English
Tragic Backstory

As the title suggests, I would like to propose that Codeforces keep its extra (late) registration open throughout the contest. Unlike AtCoder, where such a system is problematic due to its penalty system, Codeforces' penalty for submissions increases every minute, and it is no different to registering 2 days before the contest, so it isn't exploitable.

I don't see any reason not to have this, unless it is too much of a technical difficulty due to room allocation?

E: Pinging MikeMirzayanov as this seems popular, also bump for exposure.

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By ScarletS, 9 months ago, In English

Hey there Codeforces!

flamestorm and I are glad to invite you to our first-ever Codeforces round, Codeforces Round #742 (Div. 2), which will be held on Sep/05/2021 17:35 (Moscow time). This round will be rated for participants with rating lower than 2100.

Special shoutouts to:

You will have 2 hours to work on (and solve!) 6 problems. At most one of the problems will be interactive. Make sure to read this blog and familiarize yourself with these types of problems before the round! You are highly encouraged to read all the problems ;).

UPD: The score distribution is 500 — 1000 — 1500 — 1750 — 2250 — 2750.

Good luck, and see you on the scoreboard!

UPD: Editorial is out!

UPD: Congrats to the winners!

Div. 2 (the only 5 contestants to solve the whole set!):

  1. shengtongtong

  2. zihouzhong

  3. NOOB228

  4. snuphy

  5. TearsFreeze

Div. 1 + 2:

  1. SSRS_

  2. dlalswp25

  3. LayCurse

  4. neal

  5. Vercingetorix

We hope you enjoyed the round. See you soon!

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By ScarletS, history, 11 months ago, In English

I'd like to preface this by saying I know that the world doesn't revolve around IOI participants or whatever, this is just a suggestion. There is an upcoming Div. 1 and Div. 2 round (#728) scheduled for the 25th of June 15:35 UTC. I think Div. 1 rounds are pretty rare as it is at the moment, and that most serious IOI competitors practice on Codeforces anyways, so it would be nice if it could be rescheduled to some day that doesn't clash with one of the competition days. That way, it can also serve as a nice practice contest for the IOI :)

E: This topic seems to be supported by many in the Codeforces community (judging from the upvotes), I think it's fair to tag MikeMirzayanov now.

E2: adedalic too!

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By ScarletS, history, 15 months ago, In English

A — Star

Solution

B — uNrEaDaBlE sTrInG

Solution

C — Kaprekar Number

Solution

D — Base n

Solution

E — Train

Solution

F — Potion

Solution

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By ScarletS, history, 16 months ago, In English

A — Very Very Primitive Game

Solution

B — Magic 3

Solution

C — Bowls and Dishes

Solution

D — Staircase Sequences

Solution

E — Magical Ornament

Solution

F — Shift and Inversions

Solution

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By ScarletS, history, 17 months ago, In English

A — Large Digits

Solution

B — Gentle Pairs

Solution

C — 1-SAT

Solution

D — Choose Me

Solution

E — Through Path

Solution

F — Close Group

Solution

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By ScarletS, history, 17 months ago, In English

A — ABC Preparation

Solution

B — Smartphone Addiction

Solution

C — Duodecim Ferra

Solution 1

D — Stamp

Solution

E — Sequence Matching

Solution

F — Range Xor Query

Solution

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