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rivalq's blog

By rivalq, history, 9 months ago, In English
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By rivalq, history, 11 months ago, In English

We invite you to participate in CodeChef’s Starters 93, this Wednesday, 7th June, rated for all coders.

Time: 8:00 PM — 10:00 PM IST

Note that the duration is 2 hours. Read about the recent CodeChef changes here.

Joining us on the problem setting panel are:

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest.

The video editorials of the problems will be available for all users for 1 day as soon as the contest ends, after which they will be available only to Pro users.

We’re hiring! If you’d like to intern at CodeChef as a Learning Content Creator, click here.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here.

Are you ready to dance to the rhythm of Ariana Grande's songs while coding? We sure are! Join us for an unparalleled contest experience. And before you go, drop your favorite Ariana Grande song in the comments. Let's see which tune gets the most love!

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By rivalq, history, 18 months ago, In English

I hope you all liked the round. Please share your feedback in the comments section.

1747A — Two Groups

Hint
Tutorial
Solution

1747B — BAN BAN

Hint 1
Hint 2
Hint 3
Tutorial
Solution

1747C — Swap Game

Hint 1
Hint 2
Tutorial
Solution

1747D — Yet another Problem

Hint 1
Hint 2
Hint 3
Tutorial
Solution

1747E — List Generation

Hint 1
Hint 2
Tutorial
Solution

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By rivalq, history, 18 months ago, In English

Hi Codeforces!

I am pleased to invite you to Adhocforces, Mathforces Codeforces Round #832 (Div. 2), which will take place on Friday, Nov 4, 2022 at 14:35 UTC. You will be given 5 problems and 2 hours to solve them.

The round will be rated for participants of Division 2 with a rating lower than 2100. Division 1 participants can participate unofficially in the round.

All problems in this round were prepared by me and CoderAnshu.

I would like to thank:

The score distribution will be announced shortly before the round (or earlier).

Good luck and have fun! See you in the standings.

UPD 1:

Scoring distribution: 500 — 1000 — 1250 — 1750 — 2500

UPD 2:

I am flying to dhaka so will post editorials later.

UPD 3:

Congratulations to our winners!

Overall:

  1. Um_nik
  2. errorgorn
  3. turmax
  4. OtoriEmu
  5. Vercingetorix

Div 2:

  1. OtoriEmu
  2. Nephren--Ruq--Insania
  3. Silviasylvia
  4. Gu_Zhou_Suo_Li_Weng
  5. googolx

UPD 4: Editorial for A to C has been posted, will post D,E soon.

UPD 5: Editorial for D is posted.

UPD 6: Finally editorial for E is posted.

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By rivalq, 23 months ago, In English

I hope you all liked the round. Please share your feedback in the comments section.

1682A — Palindromic Indices

Hint
Tutorial
Solution

1682B — AND Sorting

Hints
Tutorial
Solution

1682C — LIS or Reverse LIS?

Hint
Tutorial
Solution

1682D — Circular Spanning Tree

Hints
Tutorial
Solution

1682E — Unordered Swaps

Tutorial
Solution

1682F — MCMF?

Tutorial
Solution

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By rivalq, history, 3 years ago, In English

Hello Codeforces!

I'm Jatin, a member of COPS IIT(BHU). I attempted a screen-cast of Codeforces Round #747 (DIV. 2) followed by a short discussion of the solutions to problems. I managed to solve the first 6 problems (A — E2) and got 242 overall rank.

Video:Screencast

Do subscribe to our channel and share the content if you find it helpful. As always, feel free to comment below.

Thanks for reading and see you in the next contest!

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By rivalq, history, 3 years ago, In English

Hi Everyone !! I am Jatin Garg from Competitive Programming Group IIT BHU. Today I attempted to make the screencast In Hindi for the Codeforces Round 697 (Div3). I was able to solve all problems during the contest and got 144th rank. I also shared my approach to solving the problems during the contest.

Do check it out:
https://www.youtube.com/watch?v=Ha3Xw9Tq1Po
Do like and subscribe to the channel. We will be posting editorials for future contests, so stay tuned.

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By rivalq, history, 3 years ago, In English

Hi Everyone !! I am Jatin Garg from Competitive Programming Group IIT BHU. Yesterday I attempted to make the screencast for the Codeforces Round 693 (Div3). I was able to solve problem A to E and G during the contest (got 330th rank) and later upsolved F in a separate video. I also shared my approach to solve the problems during the contest.

Do check it out:
https://www.youtube.com/watch?v=Wzz5psk5PWs (Screencast)
https://www.youtube.com/watch?v=x4oIUhKpsk8 (Problem F)
Do like and subscribe to the channel. We will be posting editorials for future contests, so stay tuned.

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