MrDecomposition's blog

By MrDecomposition, history, 2 months ago, In English

Someone 1.5 hours ago posted standings of IATI 2020 in a blog which is now deleted (idk why). Here is the link to the results. But the thing is there are only sperate day results and no summed up results; so I wrote a code to combine them. Here are the combined results: Junior and Senior. Just search your id with the second number changed to 0 and the row number will be your place. If you don't know your id use the first link.

P.S. None of these results are official results, I just found the first link in a cf blog and quickly wrote a code to combine the results.

UPDATE: Results are posted in IATI's facebook page

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By MrDecomposition, history, 7 months ago, In English
Problem A
Problem B
Problem C
Problem D
Problem E
Problem F
Problem G
Problem H
Problem I

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By MrDecomposition, history, 10 months ago, In English

Hello codeforces community. As we know the world is now facing a huge problem, we hear about it everywhere, I am sure even some of you are staying isolated from people because of it. Some events are getting cancelled because of it, and the most important events for our community are also in danger of being cancelled. I am talking about IOI and ICPC WF. I saw some official announcements regarding COVID-19 from both of the events (ICPC, IOI). I understand that they can't decide anything yet, but I am very surprised not to see anyone discussing the problem here.

I personally think there are only 4 possible solutions

  1. Host the event, but with less countries participating.

  2. Cancel the event

  3. Do something online, and do not require people to travel to Russia/Singapore. (The problem here will be trusting participants)

  4. Delaying the events (I know this will be very hard, and will cost a lot of money)

I would love to hear other people's thoughts on this (mostly regarding the 3rd point), and maybe IC will consider our thoughts when making their final decision.

UPD: There were already some discussions about ICPC here (thanks Chilli for pointing that out), so I think it's better for this blog post to be only for discussions about IOI.

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By MrDecomposition, 18 months ago, In English

Hello. You may have seen this blog, so I found another website named http://cfrp.azurewebsites.net which is again an exact copy of codeforces. I don't think it's something official, but I am curious is this again some kind of a mirror for Chinese (or other) users or just a phishing site?

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By MrDecomposition, history, 2 years ago, In English

I am now trying to solve problems from IZHO 2018. I have already done 3 problems, but now I am stuck on problem 2 from the second day called "nice sequence". I don't have any idea and can't find the solution anywhere. Can you help me?

P.S. You can find the problem here.

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By MrDecomposition, history, 3 years ago, In English

Hi all. As we know ejoi will be held in july, but there is few people in participants list (you can find them here). I think it would be great if you say the participant of your country, so we can make a list with their names and codeforces profiles.

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By MrDecomposition, history, 3 years ago, In English

Hello everyone I am trying to solve the problem Game from this year's eJOI contest. I know the solution for 60 points (with priority_queue and prefixes), but i'd like to know the solution for 100 points. If there is anyone who has solved it, please tell the solution. Thanks

P.S if you want we can discuss other problems in comments :)

Problems day 1, day 2.

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