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demoralizer

Open on Codeforces · Unique solved

Rating2352· International Master

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
56
Unique solved
2,170
Submissions (all)
4,317
Years with activity
2018–2025

Solved by problem rating

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

  • Unrated76
  • 800–899297
  • 900–99983
  • 1000–1099100
  • 1100–119999
  • 1200–1299107
  • 1300–139992

Solved by topic

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

  • greedy749
  • math699
  • implementation688
  • dp451
  • brute force406
  • constructive algorithms401
  • data structures

Rating changes

2018

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

Jan
Feb
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May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-07-16 16:35Codeforces Round 808 (Div. 1)296-172352
2022-06-25 16:50Codeforces Global Round 21466-282369
2022-06-16 16:35Codeforces Round 800 (Div. 1)210+102397
2022-05-25 19:50Codeforces Round 794 (Div. 1)291-802387
2022-05-19 16:35Codeforces Round 792 (Div. 1 + Div. 2)538
1400–1499
95
  • 1500–1599102
  • 1600–169998
  • 1700–1799117
  • 1800–189987
  • 1900–1999106
  • 2000–2099150
  • 2100–2199130
  • 2200–2299124
  • 2300–239998
  • 2400–249997
  • 2500–259960
  • 2600–269921
  • 2700–279918
  • 2800–28994
  • 2900–29991
  • 3000–30994
  • 3100–31991
  • 3200–32992
  • 3300–33991
  • 395
  • binary search270
  • sortings261
  • graphs220
  • dfs and similar213
  • number theory188
  • strings183
  • trees174
  • bitmasks143
  • two pointers138
  • combinatorics118
  • dsu86
  • games72
  • geometry65
  • shortest paths62
  • divide and conquer57
  • hashing49
  • interactive39
  • probabilities37
  • flows21
  • graph matchings20
  • matrices19
  • Other (9 tags)60
  • 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
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    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.

    2020

    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.

    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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    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.

    2022

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

    Jan
    Feb
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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.

    2023

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    2024

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

    Jan
    Feb
    Mar
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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.

    2025

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

    Jan
    Feb
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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.

    May
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    LessMore (max 38/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 43/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 63/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 44/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 30/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 37/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 13/day in 2024)

    2025

    Download PNG

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

    Jan
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    LessMore (max 14/day in 2025)

    -93
    2467
    2021-07-25 17:20Codeforces Global Round 15115+522560
    2021-07-22 17:05Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2)106+502508
    2021-05-24 16:50Codeforces Round 722 (Div. 1)97+852458
    2021-05-02 17:35Codeforces Global Round 14504-352373
    2021-04-16 16:50Codeforces Round 715 (Div. 1)115+662408
    2021-03-21 15:35Codeforces Round 709 (Div. 1, based on Technocup 2021 Final Round)208+322342
    2021-03-13 11:35Codeforces Round 707 (Div. 1, based on Moscow Open Olympiad in Informatics)359-502310