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BennyLaw

Open on Codeforces · Unique solved

Rating2152· 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
20
Unique solved
284
Submissions (all)
586
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.

  • Unrated30
  • 800–89981
  • 900–99927
  • 1000–109942
  • 1100–119928
  • 1200–129922
  • 1300–139915

Solved by topic

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

  • implementation106
  • greedy96
  • math90
  • brute force47
  • sortings38
  • strings33
  • constructive algorithms

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
2026-04-07 16:50Codeforces Round 1091 (Div. 2) and CodeCraft 2689+702152
2026-02-23 17:05Codeforces Round 1082 (Div. 1)276+882082
2026-02-11 17:35Codeforces Round 1079 (Div. 1)780-871994
2026-02-08 11:05Codeforces Round 1078 (Div. 2)3+3282081
2026-01-29 17:35Codeforces Round 1077 (Div. 2)622
1400–1499
5
  • 1500–15993
  • 1600–16997
  • 1700–17993
  • 1800–18994
  • 1900–19993
  • 2000–20994
  • 2100–21992
  • 2200–22992
  • 2300–23993
  • 2500–25991
  • 2600–26991
  • 3000–30991
  • 31
  • dp25
  • games22
  • data structures19
  • binary search18
  • bitmasks11
  • number theory11
  • two pointers11
  • dfs and similar7
  • graphs6
  • combinatorics4
  • trees4
  • interactive4
  • geometry4
  • probabilities3
  • divide and conquer2
  • communication2
  • schedules2
  • graph matchings2
  • *special2
  • chinese remainder theorem1
  • fft1
  • Other (3 tags)3
  • 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 5/day in 2022)

    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 13/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 31/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
    Nov
    Dec

    LessMore (max 37/day in 2026)

    +53
    1753
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)1627+161700
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)1662+341684
    2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)348+1741650
    2025-10-05 18:35Codeforces Round 1056 (Div. 2)610+1811476
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)4591+501295
    2025-09-24 14:50Codeforces Round 1053 (Div. 2)4547-241245
    2025-09-21 16:50Codeforces Round 1052 (Div. 2)3867+501269