preet_25's blog

By preet_25, history, 2 months ago, In English

We invite you to participate in CodeChef’s Starters 67, this Wednesday, 30th November, rated till 5-stars Coders (i.e. for users with rating < 2200). This contest is organized by i.Fest '22, DA-IICT

Time: 8 PM — 11:00 PM IST

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.

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.

There are some exciting prizes too. To be eligible for the prizes make sure to fill this form.

We would like to thank CodeChef for providing us the platform to host our contest. We would also like to thank the entire Codechef Team for their invaluable feedback and for their excellent coordination.

Hope to see you participating. Good Luck!

 
 
 
 
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2 months ago, # |
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Auto comment: topic has been updated by preet_25 (previous revision, new revision, compare).

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2 months ago, # |
  Vote: I like it -24 Vote: I do not like it

stop cheaters then invite for contest,atleast you should claim copyright to solution videos on youtube.

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2 months ago, # |
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Auto comment: topic has been updated by preet_25 (previous revision, new revision, compare).

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2 months ago, # |
  Vote: I like it +26 Vote: I do not like it

change your rating algo like codeforces. Your volatility sucks.

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2 months ago, # |
Rev. 2   Vote: I like it +6 Vote: I do not like it

There are some exciting prizes too.

Can you specify the prizes?

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    2 months ago, # ^ |
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    Prizes worth INR 10000!

    For Div-1:

    1st — INR 4000

    2nd — INR 2500

    3rd — INR 1500

    For Div-2:

    1st — INR 1250

    2nd — INR 750

    All the Prizes are open for all.

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2 months ago, # |
  Vote: I like it +12 Vote: I do not like it

Clashes with Newton school triwizard contest, could you please postpone it ?

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2 months ago, # |
  Vote: I like it -19 Vote: I do not like it

INCREASE THE FREQUENCY OF CONTESTS .THERE IS ONLY ONE CONTEST IN A WEEK AND WHY THERE IS NO COOK OFF, LUNCH TIME?

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    2 months ago, # ^ |
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    They don't have many problem-setters. And I'd say even one contest a week is good enough and tbh hard to prepare. Better to have less contests than worse ones. If you'd like to help with that situation, please consider proposing some good problems for Codechef Contests.

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      2 months ago, # ^ |
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      Atleast they should change their rating algo ..

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        2 months ago, # ^ |
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        Yes, I agree. I don't like participating much now on Codechef for this reason. Despite good performance, I, like most other people only get very small positive delta. Even rank 5 guy got < +30 delta in a recent contest. Rating delta shouldn't be correlated with lot of other things that it currently is (like average performance) apart from performance in contest.

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2 months ago, # |
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How to solve problem D?

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2 months ago, # |
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For 4th Problem, the idea of enforcing count in that style kills the beauty of the problem. :) N could have been ~2e5.

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    2 months ago, # ^ |
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    I am assuming that you mean 4-th problem of Div 1.

    We kept constraints high as we wanted to cut $$$O(n \sqrt n)$$$ solution. After seeing the final number of solve counts, it seems having $$$n \leq 2 \cdot 10^5$$$ would not have been a bad idea.

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2 months ago, # |
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how to solve Existence Of X?

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2 months ago, # |
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May someone explain me approach for musical rods?

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    2 months ago, # ^ |
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    Concept of Fractional Knapsack Problem .

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    2 months ago, # ^ |
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    This might not be the intended method, but what I did was: Sort rods in increasing order of their ratio of Beauty to Length. The order of rods you get is the optimal order. I didn't prove it formally but it was intuitive that rods with 'high beauty and low length' should be towards right and rods with 'less beauty and more length' towards left.

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      2 months ago, # ^ |
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      I saw some of the solutions having same approach but couldnt understand them. Now i got it. Thanks

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2 months ago, # |
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Is CodeChef no longer conducting Cook Off and Lunch Time every month ?

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stuck on Existence of X in the most epic fashion and seeing rank plummet in the last hour is the story of this contest

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quality of questions are improving :)

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2 months ago, # |
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Sorry for the late comment but the problem Magical Rods is very similar to this Atcoder problem