XCoder_420's blog

Valentine's Coding Challenge By CodeClub JUSL Jadavpur University
By XCoder_420, history, 15 months ago, In English

Hi Everyone,

This Tuesday, On The Auspicious Occasion Of Valentine's Day XD, We At CodeClub JUSL Are Going To Hold The Yearly Valentine's Coding Challenge Which Is Held Every Year.

However This Year, Something's Special. So First Of All Anyone From Any Educational Institution Can Take Part In This Challenge. Participation Is Entirely Free. And Also The Challenge Will Be Held In Two Phases.

  1. Online Round(Platform Hackerrank)
  2. Onsite Round(Only For The Top Participants)

The Online Round Will Be Held On Tuesday 14th February 2023 From 7 P.M Onwards And Will Last For 135 Minutes.

Finals Will Be Held Onsite At Jadavpur University, Salt Lake Campus. Further Communication Would Be Provided To The Top Participants Henceforth.

Contest Link https://www.hackerrank.com/valentines-coding-challenge-2023

Google Form Link: https://forms.gle/BMmVkf1w6z46pJzS7

Don't Forget To Register In The Google Form. Otherwise, Your Participation Would Be Invalid For Finals.

Problem Setters : XCoder_420 Jesture soujash_mandal Problem Testers : dddd2

Good Luck Everybody. Hope To See You On The Leaderboard :)

Update 1: Contest Is Postponed For Half An Hour. It Will Start At 7.30 PM.

Update 2: We'll announce the winners pretty soon after Plag check. Stay tuned :)

Results

Qualification Criteria For Onsite Final Round The Top 10 Participants Overall And Top 20 From JU(No Intersection B\W The Two) Qualify For The Onsite Rounds. You'll Be Notified Through Mail About The Final Round's Date And Time.

We Are Overwhelmed On Your Participation. Thanks, A Lot. It Takes A Lot Of Efforts To Organise A Contest. And I Can Say By Your Response, We Are Rewarded :) Congrats Everyone !!

Top 5 Participants

  1. WAtoAC2001
  2. onebit1024
  3. Yomapeed
  4. IceKnight1093
  5. 18o3

  • Vote: I like it
  • -8
  • Vote: I do not like it

Comments Comments (38)
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15 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by XCoder_420 (previous revision, new revision, compare).

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15 months ago, # |
  Vote: I like it 0 Vote: I do not like it

There is no option for hackerrank id in the form? How will you decide whose id is which then?

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15 months ago, # |
  Vote: I like it +3 Vote: I do not like it

What is the expected difficulty of problems? Div3,div2?

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    15 months ago, # ^ |
      Vote: I like it +3 Vote: I do not like it

    Round 1 Will Be Comparatively Easier I Can Say. You Can Expect Questions Typically From 1200-1900 Range.

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15 months ago, # |
← Rev. 2   Vote: I like it +14 Vote: I do not like it

[Deleted]

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15 months ago, # |
  Vote: I like it +4 Vote: I do not like it

  1. Please give an editorial for the problems.

  2. In the id column of the google form, I have to give my username, right?

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15 months ago, # |
  Vote: I like it +1 Vote: I do not like it

Excited for this!!

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15 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Exited for this!

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15 months ago, # |
  Vote: I like it +9 Vote: I do not like it

...Only For The Top Participants...

And, how many of us can possibly be top participants ?

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15 months ago, # |
  Vote: I like it +8 Vote: I do not like it

Here you are saying timing is 7pm and on hackerrank it is 7:30pm?

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    15 months ago, # ^ |
      Vote: I like it +1 Vote: I do not like it

    It has been updated before 7 pm only that the contest has been postponed by half an hour. Check the blog post Update section.

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15 months ago, # |
  Vote: I like it +11 Vote: I do not like it

at least learn how to use latex before setting problems.

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15 months ago, # |
  Vote: I like it 0 Vote: I do not like it

I think the last problem is copied from somewhere but i can't remember the source

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15 months ago, # |
  Vote: I like it +3 Vote: I do not like it

How many people will be selected for onsite round?

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15 months ago, # |
  Vote: I like it +5 Vote: I do not like it

I think the input format for problem 1 is incorrect, it isnt always the case as the problem described. (3 lines). I was getting awkward runtime errors in Python.

This gave RE on tests 0 to 19, AC on 20 (0 points)

n = int(input())
s1,s2 = input().split(" ")
m = int(input())

This gave RE on only test 0 and 20, and AC on tests 1 to 19 (47.5 points)

n = int(input())
s1 = input()
s2 = input()
m = int(input())

I might be wrong, but it seems like some tests have the 2 strings in the same line, while some have it on 2 separate lines, and maybe even more inconsistent formats.

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15 months ago, # |
  Vote: I like it +9 Vote: I do not like it

Liked the problems especially aarins-water-supply-strategy. Though the last problem could have been a better one.

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15 months ago, # |
  Vote: I like it +4 Vote: I do not like it

Amazing contest, loved it, specially the question of special characters(my first dp+bitmask problem).

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    15 months ago, # ^ |
      Vote: I like it +1 Vote: I do not like it

    I tried a similar approach created a dp[1e5][32],could only pass 4 cases though. Is it possible to see submissions of other candidates?

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15 months ago, # |
  Vote: I like it -6 Vote: I do not like it

Genuinely sorry if you found some problem ideas to be copied. Yes, maybe we have taken some sort of already existing general ideas or algorithms to design the problems. We'll take care of it from the next time. Thanks a lot for the feedback though :)

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15 months ago, # |
  Vote: I like it +8 Vote: I do not like it

The test cases were not following the constraints, in the problem "Father Monster Saves the Day" the constraints said <= 1e6 but in the input, the numbers were up to 1e9.

TestCase

I know the intended solution is independent of the constraints, but this should be looked after.

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    15 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    Thanks for pointing this out. We'll surely memoize this mistake and would take great care of it in future contests.

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15 months ago, # |
← Rev. 2   Vote: I like it -11 Vote: I do not like it

.

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15 months ago, # |
← Rev. 2   Vote: I like it 0 Vote: I do not like it

can anyone tell me the approach for this problem?

Father Monster Saves The Day!!

link : https://www.hackerrank.com/contests/valentines-coding-challenge-2023/challenges/father-monster-saves-the-day

Also XCoder_420 Please enable the settings so that I may read other people's submissions for the problem.

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