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Belonogov

Open on Codeforces · Unique solved

Rating2690· 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
168
Unique solved
1,932
Submissions (all)
4,634
Years with activity
2010–2026

Solved by problem rating

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

  • Unrated597
  • 800–89968
  • 900–99933
  • 1000–109946
  • 1100–119940
  • 1200–129943
  • 1300–139961

Solved by topic

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

  • implementation419
  • greedy292
  • math290
  • dp269
  • data structures209
  • brute force182
  • 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
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2018-04-07 18:35Divide by Zero 2018 and Codeforces Round 474 (Div. 1 + Div. 2, combined)28+172690
2018-03-24 17:50Codeforces Round 472 (rated, Div. 1, based on VK Cup 2018 Round 2)80-942673
2018-03-10 17:35Codeforces Round 470 (rated, Div. 1, based on VK Cup 2018 Round 1)14+722767
2018-02-14 14:05Codeforces Round 462 (Div. 1)33+02695
2017-12-29 18:10
1400–1499
65
  • 1500–159982
  • 1600–1699116
  • 1700–179987
  • 1800–189983
  • 1900–199988
  • 2000–209981
  • 2100–219969
  • 2200–229972
  • 2300–239952
  • 2400–249962
  • 2500–259947
  • 2600–269935
  • 2700–279930
  • 2800–289915
  • 2900–299918
  • 3000–309913
  • 3100–319915
  • 3200–32995
  • 3300–33994
  • 3400–34994
  • 3500–35991
  • 180
  • binary search146
  • dfs and similar143
  • graphs140
  • sortings119
  • trees93
  • strings93
  • number theory88
  • geometry76
  • combinatorics67
  • two pointers58
  • bitmasks50
  • dsu49
  • probabilities45
  • shortest paths36
  • divide and conquer34
  • games31
  • hashing25
  • *special23
  • flows15
  • interactive11
  • matrices11
  • Other (9 tags)51
  • Jun
    Jul
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    Sep
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    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
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    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.

    2013

    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.

    2014

    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.

    2015

    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.

    2016

    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.

    2017

    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.

    2018

    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.

    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.

    2021

    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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    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.

    2026

    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.

    May
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    Nov
    Dec

    LessMore (max 25/day in 2010)

    2011

    Download PNG

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

    Jan
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    LessMore (max 23/day in 2011)

    2012

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 42/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 31/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 29/day in 2015)

    2016

    Download PNG

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

    Jan
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    LessMore (max 38/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 32/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 92/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 7/day in 2019)

    2021

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 15/day in 2021)

    2026

    Download PNG

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

    Jan
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    LessMore (max 5/day in 2026)

    Good Bye 2017
    78
    -32
    2695
    2017-12-23 16:05Codeforces Round 454 (Div. 1, based on Technocup 2018 Elimination Round 4)58-592727
    2017-12-19 17:35Codeforces Round 453 (Div. 1)16+112786
    2017-11-17 16:35Codeforces Round 446 (Div. 1)24+42775
    2017-09-30 20:05MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists)2+602771
    2017-09-16 20:05MemSQL Start[c]UP 3.0 - Round 151-212711
    2017-05-11 17:35Playrix Codescapes Cup (Codeforces Round 413, rated, Div. 1 + Div. 2)36+172732
    2017-05-07 18:45Codeforces Round 412 (rated, Div. 1, based on VK Cup 2017 Round 3)25+312715