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KDVinit

Open on Codeforces · Unique solved

Rating2443· 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
136
Unique solved
1,900
Submissions (all)
4,595
Years with activity
2020–2024

Solved by problem rating

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

  • Unrated143
  • 800–899321
  • 900–99986
  • 1000–109987
  • 1100–119997
  • 1200–129993
  • 1300–139994

Solved by topic

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

  • greedy807
  • math730
  • implementation489
  • constructive algorithms481
  • brute force377
  • dp348
  • sortings

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-11-07 16:35Codeforces Round 908 (Div. 1)92+1012443
2023-10-28 17:05Codeforces Round 906 (Div. 1)191+472342
2023-10-22 13:05Codeforces Round 905 (Div. 1)250+202295
2023-10-08 11:35Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round)564-612275
2023-09-30 17:35Codeforces Round 901 (Div. 1)
1400–1499
106
  • 1500–1599113
  • 1600–1699111
  • 1700–1799117
  • 1800–189993
  • 1900–199989
  • 2000–209970
  • 2100–219957
  • 2200–229968
  • 2300–239946
  • 2400–249940
  • 2500–259924
  • 2600–269915
  • 2700–279917
  • 2800–28996
  • 2900–29993
  • 3000–30994
  • 267
  • data structures261
  • binary search200
  • number theory160
  • graphs158
  • strings145
  • dfs and similar143
  • two pointers135
  • bitmasks123
  • combinatorics118
  • trees106
  • dsu53
  • games51
  • shortest paths49
  • interactive47
  • geometry37
  • probabilities30
  • divide and conquer27
  • hashing26
  • *special17
  • graph matchings14
  • 2-sat13
  • Other (9 tags)50
  • 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
    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.

    2022

    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.

    2023

    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.

    2024

    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 33/day in 2020)

    2021

    Download PNG

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

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

    LessMore (max 43/day in 2021)

    2022

    Download PNG

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

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

    LessMore (max 50/day in 2022)

    2023

    Download PNG

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

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

    LessMore (max 23/day in 2023)

    2024

    Download PNG

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

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

    LessMore (max 11/day in 2024)

    254
    +22
    2336
    2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)307+372314
    2023-09-10 16:35Codeforces Round 896 (Div. 1)239+502277
    2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)505+22227
    2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)723-372225
    2023-07-29 17:05Codeforces Round 889 (Div. 1)527-502262
    2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)247+432312
    2023-06-24 17:05CodeTON Round 5 (Div. 1 + Div. 2, Rated, Prizes!)420+52269