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Ryehl

Open on Codeforces · Unique solved

Rating2123· 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
18
Unique solved
339
Submissions (all)
753
Years with activity
2021–2025

Solved by problem rating

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

  • Unrated6
  • 800–89998
  • 900–99911
  • 1000–109926
  • 1100–119919
  • 1200–129918
  • 1300–139916

Solved by topic

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

  • math163
  • implementation122
  • greedy103
  • dp91
  • brute force78
  • constructive algorithms43
  • binary search

Rating changes

2021

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-11-24 16:35Educational Codeforces Round 158 (Rated for Div. 2)26+1552123
2023-11-19 16:35Codeforces Round 910 (Div. 2)206+601968
2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)1045+251908
2023-08-17 16:35Educational Codeforces Round 153 (Rated for Div. 2)888-11883
2023-08-15 16:35Codeforces Round 893 (Div. 2)
1400–1499
16
  • 1500–159923
  • 1600–169913
  • 1700–179923
  • 1800–189918
  • 1900–199914
  • 2000–209910
  • 2100–219913
  • 2200–22994
  • 2300–23992
  • 2400–24991
  • 2500–25991
  • 2600–26992
  • 2700–27994
  • 3000–30991
  • 40
  • dfs and similar39
  • data structures38
  • sortings37
  • bitmasks30
  • number theory29
  • trees29
  • strings24
  • graphs19
  • two pointers17
  • dsu14
  • combinatorics13
  • shortest paths10
  • games9
  • meet-in-the-middle8
  • divide and conquer7
  • hashing6
  • geometry6
  • *special5
  • matrices4
  • probabilities4
  • fft2
  • Other (5 tags)6
  • 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.

    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 11/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 9/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 14/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 9/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 8/day in 2025)

    405
    +59
    1884
    2023-08-05 16:35Codeforces Round 890 (Div. 2) supported by Constructor Institute587+501825
    2023-07-27 16:35Educational Codeforces Round 152 (Rated for Div. 2)1544-241775
    2023-07-23 17:05Codeforces Round 887 (Div. 2)180+1151799
    2023-07-16 16:35Codeforces Round 885 (Div. 2)1747-221684
    2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)1922+151706
    2023-07-06 16:50Codeforces Round 882 (Div. 2)1154+281691
    2023-06-29 16:35Educational Codeforces Round 151 (Rated for Div. 2)609+981663