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andrej246

Open on Codeforces · Unique solved

Rating2223· 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
37
Unique solved
294
Submissions (all)
567
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated15
  • 800–89947
  • 900–99914
  • 1000–109910
  • 1100–119921
  • 1200–129914
  • 1300–139910

Solved by topic

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

  • greedy130
  • math106
  • constructive algorithms85
  • implementation70
  • dp69
  • data structures57
  • brute force

Rating changes

2023

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

Jan
Feb
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May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-02-23 17:05Codeforces Round 1082 (Div. 1)275+272223
2025-12-27 17:35Good Bye 2025505+382196
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)303+752158
2025-09-21 16:50Codeforces Round 1052 (Div. 2)45+1382083
2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)2720
1400–1499
17
  • 1500–159911
  • 1600–169916
  • 1700–179927
  • 1800–189916
  • 1900–199911
  • 2000–209919
  • 2100–219918
  • 2200–22996
  • 2300–23997
  • 2400–24993
  • 2500–25996
  • 2600–26995
  • 3100–31991
  • 51
  • sortings43
  • binary search43
  • dfs and similar38
  • trees35
  • graphs34
  • strings23
  • number theory22
  • bitmasks21
  • combinatorics21
  • two pointers16
  • dsu15
  • games15
  • *special15
  • divide and conquer13
  • interactive7
  • geometry6
  • graph matchings4
  • ternary search4
  • shortest paths4
  • 2-sat3
  • probabilities3
  • Other (8 tags)13
  • 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
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    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
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    Dec

    LessMore (max 12/day in 2023)

    2024

    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 23/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 19/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 10/day in 2026)

    -94
    1945
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)322+1282039
    2025-07-27 16:35Codeforces Round 1039 (Div. 2)1817-691911
    2025-06-21 16:35Codeforces Round 1033 (Div. 2) and CodeNite 2025352+341980
    2025-06-12 16:35Codeforces Round 1030 (Div. 2)1614-661946
    2025-06-03 16:35Educational Codeforces Round 179 (Rated for Div. 2)1017-682012
    2025-05-05 16:50Codeforces Round 1023 (Div. 2)188+272080
    2025-04-28 16:35Educational Codeforces Round 178 (Rated for Div. 2)353-72053