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Zbyszek99

Open on Codeforces · Unique solved

Rating2261· 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
35
Unique solved
458
Submissions (all)
1,468
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
  • 800–89938
  • 900–9998
  • 1000–109913
  • 1100–119915
  • 1200–129916
  • 1300–139913

Solved by topic

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

  • greedy204
  • math161
  • data structures149
  • dp146
  • brute force117
  • implementation107
  • dfs and similar

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
2026-01-07 17:35Hello 20261001-692261
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)1051-1242330
2025-11-16 16:35Codeforces Round 1064 (Div. 1)101+782454
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)304+32376
2025-10-30 19:35Pinely Round 5 (Div. 1 + Div. 2)205
1400–1499
11
  • 1500–159911
  • 1600–169912
  • 1700–179922
  • 1800–189922
  • 1900–199919
  • 2000–209919
  • 2100–219937
  • 2200–229913
  • 2300–239958
  • 2400–249968
  • 2500–259929
  • 2600–26996
  • 2700–27994
  • 2800–28995
  • 2900–29994
  • 3000–30992
  • 3400–34991
  • 93
  • constructive algorithms92
  • trees91
  • binary search82
  • graphs73
  • bitmasks65
  • sortings56
  • two pointers48
  • number theory43
  • combinatorics39
  • dsu37
  • divide and conquer29
  • strings26
  • games19
  • shortest paths18
  • hashing16
  • interactive13
  • geometry12
  • probabilities11
  • matrices10
  • 2-sat9
  • graph matchings7
  • Other (8 tags)31
  • 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 2/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 27/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 41/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 23/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 9/day in 2026)

    -3
    2373
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)90+1242376
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)574-102252
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)248+582262
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)618+52204
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)881-262199
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)190+1132225
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)932-192112