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Redcrown

Open on Codeforces · Unique solved

Rating2144· 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
48
Unique solved
488
Submissions (all)
1,177
Years with activity
2022–2025

Solved by problem rating

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

  • Unrated173
  • 800–89979
  • 900–99917
  • 1000–109916
  • 1100–119919
  • 1200–129919
  • 1300–139916

Solved by topic

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

  • greedy149
  • math114
  • constructive algorithms107
  • implementation97
  • brute force67
  • sortings55

Rating changes

2022

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-12-30 16:50Good Bye 2023780+182144
2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)205+1532126
2023-08-17 16:35Educational Codeforces Round 153 (Rated for Div. 2)770-191973
2023-08-12 16:35Codeforces Round 892 (Div. 2)198+741992
2023-08-05 16:35Codeforces Round 890 (Div. 2) supported by Constructor Institute
1400–1499
16
  • 1500–15998
  • 1600–169912
  • 1700–179922
  • 1800–189917
  • 1900–199919
  • 2000–209918
  • 2100–21999
  • 2200–22999
  • 2300–23994
  • 2400–24995
  • 2500–25996
  • 2600–26992
  • 2700–27992
  • data structures
    47
  • dp46
  • binary search37
  • strings32
  • number theory24
  • two pointers23
  • combinatorics22
  • graphs20
  • bitmasks17
  • games16
  • dfs and similar16
  • trees16
  • geometry13
  • dsu12
  • interactive10
  • shortest paths8
  • hashing7
  • ternary search4
  • probabilities4
  • divide and conquer4
  • string suffix structures3
  • matrices3
  • Other (5 tags)7
  • 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.

    2025

    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 26/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 32/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 14/day in 2024)

    2025

    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 2/day in 2025)

    3146
    -124
    1918
    2023-07-29 17:05Codeforces Round 889 (Div. 1)893-892042
    2023-07-23 17:05Codeforces Round 887 (Div. 1)462-252131
    2023-05-12 16:35Educational Codeforces Round 148 (Rated for Div. 2)75+582156
    2023-05-08 14:05Codeforces Round 872 (Div. 1)605-582098
    2023-04-27 16:35Codeforces Round 868 (Div. 2)23+1282156
    2023-04-20 16:35Educational Codeforces Round 147 (Rated for Div. 2)236+162028
    2023-03-09 12:35Codeforces Round 857 (Div. 1)672-712012