LongChallenge(Sep) - Full Editorial

Contest - https://www.codechef.com/SEPT20B

Problem Name - A Problem on Sticks
Problem Link - https://www.codechef.com/SEPT20B/problems/TREE2
Editorial - TREE2 - Editorial

Problem Name - Ada Matrix
Problem Link - https://www.codechef.com/SEPT20B/problems/ADAMAT
Editorial - https://discuss.codechef.com/problems/ADAMAT

Problem Name - Chefina and Swap
Problem Link - https://www.codechef.com/SEPT20B/problems/CHFNSWAP
Editorial - https://discuss.codechef.com/problems/CHFNSWAP

Problem Name - Coronavirus Spread 2
Problem Link - https://www.codechef.com/SEPT20B/problems/COVID19B
Editorial - https://discuss.codechef.com/problems/COVID19B

Problem Name - Find XOR
Problem Link - https://www.codechef.com/SEPT20B/problems/FINXOR
Editorial - https://discuss.codechef.com/problems/FINXOR

Problem Name - Chef and Trump Cards
Problem Link - https://www.codechef.com/SEPT20B/problems/CRDGAME2
Editorial - https://discuss.codechef.com/problems/CRDGAME2

Problem Name - Divide Candies
Problem Link - https://www.codechef.com/SEPT20B/problems/EQDIV
Editorial - https://discuss.codechef.com/problems/EQDIV

Problem Name - Rotate the Polyline
Problem Link - https://www.codechef.com/SEPT20B/problems/ROTATPOL
Editorial - ROTATPOL - Editorial

Problem Name - Vibrating Paths (Challenge)
Problem Link - https://www.codechef.com/SEPT20B/problems/VBR
Editorial - https://discuss.codechef.com/problems/VBR

Problem Name - Move the Coins 2
Problem Link - https://www.codechef.com/SEPT20B/problems/MOVCOIN2
Editorial - https://discuss.codechef.com/problems/MOVCOIN2


Video editorial are also available in this

1 Like

The link for the editorial of Rotate the Polyline is to an uncommented solution, not an editorial. Is there an Editorial for this problem?

Editorial for Rotate The Polyline missing?

look at both the solution ,what you sense is plagairism, many students work hard to get a better rank and now see who is taking all the credits ,the plagger
P.S. He got rank 23 in september challenge

I note that over 100 people scored 700 points in Division 2, solving exactly the same problems. Many of them were 1* or 2*, which makes me suspicious, to say the least. Meanwhile I scored 699.98 points, solving a different set of problems.


I saw the solutions.
Looks like its a fake account, made recently,( for verifying the probs accuracy maybe).


Because there was a bigger difference in difficulty over 7th and 8th question

Here is the editorial link


how to get such a 6 star rating . Any tips, guide , suggestions etc.

In case anyone is confused: ROTATPOL was made Public, but was then made Private again for a while, which is why people couldn’t find it :slight_smile:


Thanks for help
All Editorial at one place :blush:

Yet I found it easy to get some points in VBR, by repeatedly hitting the lowest cost node until it has no edges, but I failed to spot the required combinations in CRDGAME2.

is this also a fake account,just go through all the submissions in the test and you will know about the reality

1 Like

I really need to appreciate you for doing coding even at this age, and you are the only such person I have seen doing coding and actively participating in discuss.Hats off.