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frey4

Open on Codeforces · Unique solved

Rating2192· 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
23
Unique solved
350
Submissions (all)
749
Years with activity
2022–2024

Solved by problem rating

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

  • Unrated1
  • 800–89959
  • 900–99915
  • 1000–109917
  • 1100–119924
  • 1200–129910
  • 1300–139921

Solved by topic

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

  • greedy154
  • math148
  • constructive algorithms99
  • implementation99
  • brute force83
  • dp79
  • data structures

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
2023-12-24 16:35Codeforces Round 917 (Div. 2)32+1242192
2023-12-23 17:35Pinely Round 3 (Div. 1 + Div. 2)370+1002068
2023-12-18 16:35Educational Codeforces Round 160 (Rated for Div. 2)402+111968
2023-12-09 18:05Codeforces Round 914 (Div. 2)205+561957
2023-12-03 16:35Educational Codeforces Round 159 (Rated for Div. 2)
1400–1499
19
  • 1500–159924
  • 1600–169924
  • 1700–179934
  • 1800–189927
  • 1900–199923
  • 2000–209919
  • 2100–21998
  • 2200–229910
  • 2300–23995
  • 2400–24995
  • 2500–25993
  • 2600–26991
  • 2700–27991
  • 59
  • sortings52
  • number theory50
  • binary search45
  • bitmasks35
  • dfs and similar30
  • graphs30
  • combinatorics29
  • two pointers28
  • strings23
  • trees15
  • dsu12
  • hashing10
  • shortest paths8
  • games7
  • interactive6
  • divide and conquer6
  • geometry6
  • probabilities4
  • string suffix structures4
  • matrices2
  • chinese remainder theorem1
  • Other (1 tag)1
  • 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 15/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 25/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 20/day in 2024)

    628
    -9
    1901
    2023-11-03 16:35Educational Codeforces Round 157 (Rated for Div. 2)738-141910
    2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)1036+301924
    2023-09-11 16:35Codeforces Round 897 (Div. 2)872-121894
    2023-03-23 16:35Educational Codeforces Round 145 (Rated for Div. 2)162+931906
    2023-03-18 14:20Codeforces Round 858 (Div. 2)1191-421813
    2023-03-12 16:35Nebius Welcome Round (Div. 1 + Div. 2)655+931855
    2023-02-12 10:35Codeforces Round 852 (Div. 2)897+81762