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H_W_Y

Open on Codeforces · Unique solved

Rating2428· 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
17
Unique solved
588
Submissions (all)
1,486
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.

  • Unrated113
  • 800–89935
  • 900–9997
  • 1000–10996
  • 1100–11997
  • 1200–129914
  • 1300–13998

Solved by topic

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

  • math164
  • greedy156
  • data structures142
  • dp136
  • constructive algorithms89
  • implementation74
  • 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
2025-03-10 17:15Codeforces Round 1008 (Div. 1)97+1002428
2025-02-11 16:35Codeforces Round 1004 (Div. 1)256+282328
2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)420+292300
2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)362+372271
2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
1400–1499
14
  • 1500–15994
  • 1600–16995
  • 1700–179914
  • 1800–189916
  • 1900–199916
  • 2000–209919
  • 2100–219911
  • 2200–229913
  • 2300–239923
  • 2400–249929
  • 2500–259925
  • 2600–269915
  • 2700–279920
  • 2800–289929
  • 2900–299927
  • 3000–309931
  • 3100–319923
  • 3200–329914
  • 3300–339918
  • 3400–349912
  • 3500–359920
  • 71
  • combinatorics66
  • graphs61
  • brute force60
  • binary search59
  • dfs and similar52
  • strings45
  • sortings43
  • bitmasks42
  • number theory36
  • two pointers29
  • dsu29
  • divide and conquer28
  • probabilities21
  • hashing21
  • flows19
  • string suffix structures19
  • games15
  • shortest paths14
  • interactive14
  • matrices13
  • fft13
  • Other (6 tags)24
  • 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 16/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 50/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 30/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 13/day in 2025)

    351
    +57
    2234
    2024-09-14 16:35Codeforces Round 972 (Div. 2)60+992177
    2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)107+1032078
    2024-05-31 12:05Codeforces Round 949 (Div. 2)179+721975
    2024-04-27 16:35Codeforces Round 941 (Div. 1)924-341903
    2024-03-16 17:00Codeforces Round 934 (Div. 1)799-81937
    2024-03-15 16:35Educational Codeforces Round 163 (Rated for Div. 2)71+1711945
    2024-03-05 16:35Codeforces Round 932 (Div. 2)1161+711774