### JaySharma1048576's blog

By JaySharma1048576, 11 months ago,

I am sorry for the weak tests in B, for C being a little standardish and for misjudging the relative difficulties of E and F. Nevertheless, I hope you enjoyed the round. Here is the editorial. Do provide your feedback on each problem so that I can improve upon them the next time.

Hint 1
Hint 2
Tutorial
Solution
Feedback

Hint 1
Tutorial
Solution
Feedback

Hint 1
Hint 2
Tutorial
Solution
Feedback

Hint 1
Hint 2
Hint 3
Tutorial
Solution
Feedback

#### E. Power or XOR?

Hint 1
Hint 2
Hint 3
Hint 4
Tutorial
Solution
Feedback

Hint 1
Hint 2
Tutorial
Solution
Feedback

• +93

By JaySharma1048576, 11 months ago,

Hello Codeforces,

I invite you to participate in Codeforces Round 785 (Div. 2) which will be held on 30.04.2022 17:35 (Московское время). The round will be rated for participants of Division 2 with rating strictly less than 2100. But as always, the participants of Division 1 are welcome to take part out of competition.

You will be given 6 problems and 2 hours to solve them. Moreover, there will be atleast $1$ and atmost $1048576$ interactive problems. So, you are advised to refer to the guide on interactive problems in case you are not familiar with them.

I would like to thank the following people for their contribution to the round:

This will be my second Codeforces round and based on the feedback by participants on Round #730, I have implemented the following changes:

• The round will have no theme. I have tried to keep the problem statements as short and to the point as possible.
• The pretests have been made stronger (specifically, more pretests have been included).
• I have tried to keep the samples and their explanation as useful as possible.
• No floating-point precision issues this time.
• The I/O constraints for the interactive problem(s) have been kept low to provide a fair ground to the languages with slower I/O.

The score distribution will be released strictly before the round and the editorial will be released strictly after the round.

Good luck and have fun!

Disclaimer

UPD: The score distribution is $500-750-1500-2000-2750-3250$.

UPD: Editorial

UPD: Congratulations to the winners

Div. 1 + Div. 2 -

Div. 2 -

First solves -

Problem Participant Time
A A_G 0:02
B Geothermal 0:05
C quailty 0:03
D BalintR 0:16
E zsxdcfv 0:27
F ksun48 0:11

• +369

By JaySharma1048576, history, 20 months ago,

Today I received a message saying that my solution for problem D of Codeforces Round #733 coincides with more than 20-25 other submissions. First, I got a little confused but now I have an explanation for this.

stopcheatingmyself was in the same room as mine during the contest. I had submitted my solution for problem D at 0:44. He submitted his solution at 0:57 and immediately locked the problem. He then probably saw my solution and leaked it. I am also attaching screenshots of the timestamps to prove my point.

Timestamp of my submission —

Timestamp of submission by stopcheatingmyself -

Moreover, I have given around 120 contests and I have a very clean record. I have also been the setter of Codeforces Round #730 (Div. 2). Such things clearly show that I am not a cheater.

I would request MikeMirzayanov to look into this matter and revert my ratings and solutions back as clearly there is no fault of mine in all this. I would also request him to do something in this regard so that the hacking feature isn't exploited such shamelessly again in the future. I remember that someone else had also raised this issue in the past but it was ignored.

• +617

By JaySharma1048576, 21 month(s) ago,

Hint 1
Hint 2
Tutorial
Solution

Hint
Tutorial
Solution

Hint 1
Hint 2
Hint 3
Hint 4
Tutorial
Solution

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Tutorial
Solutions

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Tutorial
Solutions

#### E: The Final Pursuit

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Hint 6
Tutorial: Part 1 - Finding the Permutation
Hint 7
Hint 8
Hint 9
Hint 10
Tutorial: Part 2 - Colouring the Hypercube
Visualise the Colouring
Time Complexity
Solution

• +181

By JaySharma1048576, 21 month(s) ago,

Hello Codeforces!

I am quite excited to invite you to my first ever round, Codeforces Round 730 (Div. 2) which will start on Jul/07/2021 17:35 (Moscow time). The round will be rated for participants of Division 2 (having rating strictly less than 2100). As always, Division 1 participants are welcome to participate in the round but it will be unrated for them.

The problems of this round will be themed on the 2005 video game Need For Speed: Most Wanted. You will be given 5 problems and 2 hours 15 minutes to solve them. One of the problems will be interactive. So, it is recommended to read the guide on interactive problems before the round.

I would like to thank -

I tried my best to create interesting problems with clear statements, strong pretests and useful sample test cases. Make sure to read all of them. Good Luck and Have Fun. See you on the Blacklist ranklist.

The score distribution is here: $500-750-1500-(1000+1250)-3000$.

Disclaimer

UPD: Editorial

UPD: Congratulations to the winners

Div. 1 + Div. 2 -

Div. 2 -

First Solves -

A: Geothermal
B: Geothermal
C: olmrgcsi
D1: h0up1ngze
D2: Golovanov399
E: tfg

• +167