Fremder's blog

By Fremder, 4 weeks ago, In English

Hello Codeforces!

After the great success of Alkhwarizm 2024, we are excited to invite you all to the following two flagship coding events of Aparoksha — the annual tech-fest of IIIT Allahabad.

  • CodeRed
  • Humblefool Cup

Participation is open to all, but the prizes are only for Indian university/school students. We encourage everyone to participate in these contests. All of these contests are unrated and will be held as CodeForces gym contest.


CodeRed

CodeRed is an ICPC-style coding contest for problem-solving enthusiasts. Compete in teams of up to 3 in two rounds — Online Qualifiers and Onsite Finals.

Details:

  • Online Round (Qualifying round)

    • ICPC-style coding contest
    • Date & Time : Tuesday April 2 , 2024 at 20:00 IST
    • Prizes: INR 6K (1st: INR 3K, 2nd: INR 2K, 3rd: INR 1K)
    • Registration Form : click here (Deadline : April 2 , 2024 at 10:30 IST)
    • Contest Link : click here
    • The Global Top 25 teams in this round along with 15 selected teams from IIITA will proceed to the second round.
  • Onsite (Final) Round:


Humblefool Cup

Humblefool Cup is a prestigious international coding contest honoring the late Harsha Suryanarayana, aka Humblefool, an illustrious IIIT Allahabad alumnus. Join us coding fanatics, as we dive into a fierce competition commemorating one of India's finest coders.

Details:


We would like to thank:

Looking forward to seeing you all in the standings. Make sure you read all the problems carefully. Good luck and have fun!

Note: Ideas for some of the problems have been derived from our proposal for Codechef Starters 122. If you are aware of these problems, kindly refrain from participating.

Happy coding!


UPD1: Registration for CodeRed has started.

UPD2: Editorial for CodeRed is out now .

UPD3: Due to system testing issues, we are postponing the Humblefool Cup to a later date. The new date will be announced soon.

UPD4: You can participate in the CodeRed final mirrors, by the following link

UPD5: There will be no further extension to the CodeRed finals. We will consider all the submission from 11 a.m. to 2 p.m. IST.

UPD6: Congratulations to the winners of CodeRed Finals! To view the final leaderboard / solve the problems, click the following link.

  1. OverShadow: Coder_Nayak, Krypto_Ray, sloppy_coder
  2. Hamse na ho paayega: pk_27, uewbv, Light_KG
  3. Convex Chull: abhidot, JaySharma1048576, yash_daga

UPD6: Updated contest Date and Time of HumbleFool Cup is Tuesday April 16 , 2024 at 20:00 IST

  • Reminder: The Humblefool Cup starts in 5 minutes, self-register yourself here.

UPD7: Congratulations to the winners of HumbleFool Cup! To view the final leaderboard / solve the problems, click the following link.

Global Top 3

  1. thenymphsofdelphi
  2. minhcool
  3. Ra16bit

Indian Top 3

  1. 21cs01033
  2. envariant
  3. vok8
  • Vote: I like it
  • +102
  • Vote: I do not like it

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4 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

pvtr orz

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4 weeks ago, # |
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pvtr excited.

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3 weeks ago, # |
  Vote: I like it +9 Vote: I do not like it

Humblefool orz!

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3 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

I'm unable to register for the contest. When I click on 'Register', it asks for the team's name but the dropdown list is empty even though I registered my team through the Google Form.

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3 weeks ago, # |
Rev. 2   Vote: I like it 0 Vote: I do not like it

]

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3 weeks ago, # |
  Vote: I like it +17 Vote: I do not like it

As Starters 122 tester, I bet problems will be fun.

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3 weeks ago, # |
Rev. 5   Vote: I like it 0 Vote: I do not like it

orz!

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3 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

approach for B ?

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3 weeks ago, # |
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Can anyone tell the solution of I problem. My approach:- If number of indices where a[i]>a[i+1] is greater than equal to 3 then it should be NO and for 1,2 I am just choosing two indices greedily and brute forcing whether my array will be sorted or not but wrong on test2. If count of such indices is 2 then my operation will be on those indices and I am checking for all the combinations in those 4 indices (i,i+1,j,j+1 where a[i]>a[i+1] and a[j]>a[j+1]). Somewhat similar I am doing when count equal to 1 either i will be choosing min(x,y) or max(x,y) for that (i,i+1).

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    3 weeks ago, # ^ |
      Vote: I like it 0 Vote: I do not like it
    Failed Testcase

    The intended solution is, you can fix at most two "bad" indices. An index $$$i$$$ is bad if $$$i \leq i + 1$$$, now try to make cases for the indices and check if the array can be sorted.

    Code

    Also we found out in the contest that there are many easier dp solution as well, take states as index and status of the operation applied

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3 weeks ago, # |
  Vote: I like it +5 Vote: I do not like it

Please change the privileges accordingly , so that others solution can be seen

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3 weeks ago, # |
  Vote: I like it +4 Vote: I do not like it

Can you please provide the editorial of this contest? Fremder

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3 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

when will be editorial uploaded for this contest?

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2 weeks ago, # |
  Vote: I like it +3 Vote: I do not like it

why the delay?

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2 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

I don't think the queue will be ending within the next 15 mins.

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2 weeks ago, # |
Rev. 2   Vote: I like it 0 Vote: I do not like it

I guess the system testing is gonna take much longer than you are expecting Fremder. I think it will take upto 9 : 30 pm IST.

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2 weeks ago, # |
  Vote: I like it +2 Vote: I do not like it

So much delay now, I'm going!

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2 weeks ago, # |
  Vote: I like it +4 Vote: I do not like it

Just postpone the round to another day,queue is not going to clear in next 5-6 hrs.

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2 weeks ago, # |
  Vote: I like it 0 Vote: I do not like it

Good Decision

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13 days ago, # |
Rev. 2   Vote: I like it +5 Vote: I do not like it

Submissions are in queue for about 20 minutes now.

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8 days ago, # |
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what is the idea for C1, C2. Are they related?

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    8 days ago, # ^ |
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    C1 and C2, are mostly unrelated.

    C1 Hint
    C2 Hint
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8 days ago, # |
  Vote: I like it +9 Vote: I do not like it

Nice set of problems,although E was easy for its place.

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    8 days ago, # ^ |
      Vote: I like it +3 Vote: I do not like it

    Most of the problems in this round had pretty much similar difficulty levels, as our more difficult problems were used up in CodeRed Finals :-)

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7 days ago, # |
  Vote: I like it +22 Vote: I do not like it

When can we expect the prize money ?

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    7 days ago, # ^ |
    Rev. 2   Vote: I like it +12 Vote: I do not like it

    It's so bad nowadays...people devoting their time to a contest all to get ignored when querying about the rightful things Fremder

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      5 days ago, # ^ |
        Vote: I like it +3 Vote: I do not like it

      For Prize money mail will be send to winners , sorry for the delay .

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        39 hours ago, # ^ |
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        Any update on the prizes Fremder

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          39 hours ago, # ^ |
            Vote: I like it 0 Vote: I do not like it

          Working on it , will mail ASAP

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7 days ago, # |
  Vote: I like it +3 Vote: I do not like it

NGL cash is much needed right now