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Zlobober

Open on Codeforces · Unique solved

Rating2996· International Grandmaster

Bar charts count unique accepted problems (merged with the global problem set for rating and tags). Heatmaps use UTC calendar days. Rating squares are sums of newRating − oldRating from user.rating when System update time falls on that day. Submissions count every row from user.status (all verdicts), paginated until Codeforces has no more rows—heavy accounts can take a few seconds.

Rated contests
96
Unique solved
529
Submissions (all)
1,089
Years with activity
2010–2017

Solved by problem rating

Unique accepted problems, bucketed by catalog rating (100‑point bands). Unrated = no rating in the problem set.

  • Unrated133
  • 800–89910
  • 900–9995
  • 1000–109914
  • 1100–119911
  • 1200–129917
  • 1300–139918

Solved by topic

Each problem counts once per tag (same as Codeforces tags). Top tags shown; remaining mass in “Other”.

  • implementation117
  • math103
  • dp86
  • greedy77
  • data structures76
  • brute force62
  • constructive algorithms

Rating changes

2010

Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2010

Download PNG

Count of submissions per UTC day (includes every verdict).

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2017-07-09 11:05VK Cup 2017 - Finals4-252996
2017-05-07 18:45VK Cup 2017 - Round 31+1373021
2017-04-23 18:45Tinkoff Challenge - Elimination Round33-352884
2017-04-16 17:35VK Cup 2017 - Round 221-1072919
2017-03-18 17:35VK Cup 2017 - Round 11+143
1400–1499
21
  • 1500–159921
  • 1600–169941
  • 1700–179922
  • 1800–189934
  • 1900–199935
  • 2000–209924
  • 2100–219921
  • 2200–229921
  • 2300–239912
  • 2400–249921
  • 2500–259910
  • 2600–269914
  • 2700–27997
  • 2800–28995
  • 2900–29994
  • 3000–30994
  • 3300–33992
  • 3400–34992
  • 50
  • dfs and similar41
  • binary search40
  • graphs35
  • sortings35
  • trees33
  • number theory27
  • *special23
  • combinatorics22
  • strings22
  • two pointers21
  • geometry18
  • probabilities18
  • bitmasks17
  • dsu14
  • divide and conquer11
  • shortest paths9
  • games9
  • hashing6
  • matrices5
  • flows4
  • expression parsing4
  • Other (8 tags)18
  • Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2011

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2012

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2013

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2014

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2015

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
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    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2016

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    2017

    Sum of rating deltas on each UTC day (GitHub-style weeks, Sunday top).

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    Green: rating up · red: rating down · intensity: |Δ| tiers (<50, 50–99, 100+). One square may combine multiple rated contests on the same UTC day.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 19/day in 2010)

    2011

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
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    LessMore (max 18/day in 2011)

    2012

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
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    LessMore (max 25/day in 2012)

    2013

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
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    LessMore (max 27/day in 2013)

    2014

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
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    LessMore (max 17/day in 2014)

    2015

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
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    Jun
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    LessMore (max 18/day in 2015)

    2016

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
    Feb
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    May
    Jun
    Jul
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    Sep
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    LessMore (max 17/day in 2016)

    2017

    Download PNG

    Count of submissions per UTC day (includes every verdict).

    Jan
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    May
    Jun
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    LessMore (max 24/day in 2017)

    3026
    2017-01-12 18:35Codecraft-17 and Codeforces Round 391 (Div. 1 + Div. 2, combined)21-32883
    2016-12-30 16:45Good Bye 201623+192886
    2016-12-17 18:35Codeforces Round 385 (Div. 1)10+442867
    2016-10-22 17:35Canada Cup 201675-912823
    2016-10-08 15:15Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined)8+532914
    2016-10-01 16:05Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined)19+102861
    2016-09-13 18:35Codeforces Round 371 (Div. 1)9+702851