kostka's blog

By kostka, 9 years ago, In English

Hey there, I couldn't sleep, so I spend almost an hour to play with some Python and answering some questions about "who was... in 2015 on Codeforces" (also checking if I still remember anything :)). So — have you ever wondered who was the best in this year on Codeforces? I will try to answer to your (and mostly mine) questions. Here is the first part (and maybe the last :)) of this year review. In this year, there were 105 contests on Codeforces, 12 of them were not on CF rules, so there were removed from the rest of review (i,e, Educational Rounds, some ACM contests and so on).

Most problems solved

Handle Contests Sum of tasks solved Average
20171231 52 112 2.153846
alex_bucevschi 53 106 2.000000
Shavkat_Aminov 54 105 1.944444
ershov.stanislav 31 100 3.225806
Endagorion 30 99.5 3.316667

Wait, what? Half of the problem? There were some rounds where teams were allowed (for example VK Cup Rounds). I decided that the most fair way is to split all solved problems between all team members. That's why there could be some not integral numbers.

I was also really surprised that people from div. 1. made it here. Kudos to them!

Largest mean of solved problems during official contests

(with more than 10 contests in this year)

Handle Contests Sum of tasks solved Average
jqdai0815 21 89.5 4.261905
kcm1700 12 51 4.250000
Petr 15 62.5 4.166667
rng_58 13 53 4.076923
Egor 15 61 4.066667

Number of contests

(kudos for all people there, I want to really congratulate all "veterans")

Handle Contests Sum of tasks solved Average
Iskandarov_Islom 57 86 1.508772
Shavkat_Aminov 54 105 1.944444
alex_bucevschi 53 106 2.000000
CMaster 52 92 1.769231
20171231 52 112 2.153846

And now my favorite part of Codeforces contests :)

Hacks

Most "hacked" points

Hacked points Succ hacks Succ hacks per contest Unsucc hacks
ErzhaNN 8150 97 2.06383 31
suigingin 6950 82 1.782609 25
ndatta 5900 70 1.891892 22
shank_punk 5800 70 1.707317 24
Adhambek 5700 70 2.413793 26

Most successful hacks

Hacked points Succ hacks Succ hacks per contest Unsucc hacks
ErzhaNN 8150 97 2.06383 31
alex_bucevschi 5000 87 1.641509 74
suigingin 6950 82 1.782609 25
CMaster 3550 79 1.519231 87
Shavkat_Aminov 4950 72 1.333333 45

And?

Well, I was thinking about finding out who had the biggest rating change (both during year and after one contest), and to narrow some things just to Div. 1. (who took part in nearly all rounds, who was the best hacker and so on). Any other thoughts? Do you like such kind of posts? (Right now I think I will go to sleep properly :)).

Anyway, Happy New Year to everyone!

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9 years ago, # |
  Vote: I like it +5 Vote: I do not like it

Wow, very interesting.

Thanks.

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9 years ago, # |
Rev. 3   Vote: I like it +8 Vote: I do not like it

by the end of 2015 I participated in 179 contest, any one have more than this?
upd ruban is our hero now :D

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9 years ago, # |
  Vote: I like it +4 Vote: I do not like it

thanks a lot!!!