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Top rated · Stats

Coffins

Open on Codeforces · Unique solved

Rating2253· 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
7
Unique solved
297
Submissions (all)
811
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated12
  • 800–89912
  • 900–9992
  • 1000–10992
  • 1100–11992
  • 1200–12998
  • 1300–13994

Solved by topic

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

  • math103
  • dp99
  • greedy83
  • data structures76
  • constructive algorithms52
  • graphs52
  • trees

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
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)197+1042253
2025-12-06 10:15Codeforces Round 1069 (Div. 1)685-612149
2025-03-23 08:05Codeforces Round 1012 (Div. 1)67+2692210
2025-02-18 16:35Educational Codeforces Round 174 (Rated for Div. 2)3+4971941
2025-02-11 16:35Codeforces Round 1004 (Div. 2)
1400–1499
7
  • 1500–15995
  • 1600–16996
  • 1700–179912
  • 1800–18993
  • 1900–19999
  • 2000–20998
  • 2100–21998
  • 2200–229915
  • 2300–239917
  • 2400–249917
  • 2500–259914
  • 2600–269916
  • 2700–279914
  • 2800–289919
  • 2900–299918
  • 3000–309917
  • 3100–31998
  • 3200–329913
  • 3300–339911
  • 3400–34995
  • 3500–359913
  • 50
  • combinatorics49
  • brute force47
  • binary search38
  • dfs and similar37
  • number theory35
  • implementation33
  • bitmasks27
  • probabilities24
  • sortings24
  • divide and conquer19
  • strings17
  • interactive16
  • two pointers16
  • shortest paths15
  • dsu14
  • graph matchings13
  • flows13
  • hashing12
  • games11
  • matrices6
  • string suffix structures5
  • Other (6 tags)11
  • 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.

    2026

    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 6/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
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    Dec

    LessMore (max 34/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 44/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 12/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 10/day in 2026)

    302
    +361
    1444
    2024-12-19 17:35Codeforces Global Round 281306+4461083
    2024-10-06 08:05Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)827+637637