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Top rated · Stats

kriii

Open on Codeforces · Unique solved

Rating2699· 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
76
Unique solved
461
Submissions (all)
1,385
Years with activity
2010–2020

Solved by problem rating

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

  • Unrated103
  • 800–89916
  • 900–9999
  • 1000–109911
  • 1100–11995
  • 1200–129916
  • 1300–139916

Solved by topic

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

  • implementation114
  • math102
  • greedy91
  • dp78
  • brute force71
  • constructive algorithms52
  • data structures

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
2020-12-30 17:35Good Bye 202029+1362699
2020-08-16 17:35Codeforces Global Round 10586-1172563
2020-07-04 17:15Codeforces Global Round 945+932680
2020-06-18 17:15Codeforces Global Round 8349-632587
2020-05-12 15:05Codeforces Round 641 (Div. 1)17+173
1400–1499
23
  • 1500–159923
  • 1600–169926
  • 1700–179934
  • 1800–189932
  • 1900–199922
  • 2000–209926
  • 2100–219914
  • 2200–229917
  • 2300–23998
  • 2400–249911
  • 2500–259912
  • 2600–269911
  • 2700–279912
  • 2800–28996
  • 2900–29993
  • 3000–30993
  • 3200–32992
  • 39
  • sortings31
  • graphs30
  • number theory28
  • dfs and similar26
  • binary search26
  • *special26
  • combinatorics22
  • strings21
  • bitmasks21
  • trees19
  • geometry17
  • probabilities14
  • hashing12
  • dsu11
  • matrices10
  • games9
  • two pointers9
  • string suffix structures7
  • divide and conquer6
  • interactive5
  • expression parsing5
  • Other (7 tags)13
  • 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
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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.

    2014

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
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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
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    Jun
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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
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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.

    2017

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

    Jan
    Feb
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    Apr
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    Jun
    Jul
    Aug
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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.

    2018

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

    Jan
    Feb
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    Jun
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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.

    2019

    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.

    2020

    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
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    Dec

    LessMore (max 12/day in 2010)

    2011

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2011)

    2012

    Download PNG

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

    Jan
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    LessMore (max 6/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 54/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 81/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 39/day in 2015)

    2016

    Download PNG

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

    Jan
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    LessMore (max 34/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 13/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 34/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 8/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 14/day in 2020)

    2650
    2019-02-07 15:35Codeforces Global Round 1119+342477
    2019-01-22 16:35Codeforces Round 534 (Div. 1)384-1502443
    2019-01-04 17:45Hello 2019155-342593
    2018-12-30 17:15Good Bye 2018112-32627
    2018-09-23 15:05Codeforces Round 512 (Div. 1, based on Technocup 2019 Elimination Round 1)30+182630
    2018-08-19 15:50Codeforces Round 505 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final)10+1512612
    2018-08-17 16:50Codeforces Round 504 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final)1958-2552461