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The_stardog

Open on Codeforces · Unique solved

Rating2396· International 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
15
Unique solved
283
Submissions (all)
871
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated12
  • 800–89919
  • 900–9998
  • 1000–10994
  • 1100–11995
  • 1200–12999
  • 1300–139912

Solved by topic

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

  • dp104
  • greedy92
  • math86
  • data structures79
  • constructive algorithms47
  • implementation41
  • brute force

Rating changes

2021

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

Jan
Feb
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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
2026-04-13 16:35Codeforces Round 1093 (Div. 1)125+492396
2026-02-23 17:05Codeforces Round 1082 (Div. 1)219+112347
2026-02-11 17:35Codeforces Round 1079 (Div. 1)91+1242336
2025-09-24 14:50Codeforces Round 1053 (Div. 1)404+72212
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)
1400–1499
6
  • 1500–15997
  • 1600–169911
  • 1700–179912
  • 1800–189912
  • 1900–199910
  • 2000–20999
  • 2100–219915
  • 2200–229911
  • 2300–23999
  • 2400–249912
  • 2500–259912
  • 2600–26998
  • 2700–279911
  • 2800–289911
  • 2900–299910
  • 3000–309913
  • 3100–319912
  • 3200–329913
  • 3300–33995
  • 3400–34993
  • 3500–35992
  • 39
  • combinatorics34
  • trees33
  • graphs31
  • dfs and similar31
  • sortings28
  • binary search28
  • bitmasks27
  • number theory25
  • two pointers20
  • divide and conquer14
  • strings14
  • probabilities11
  • flows11
  • dsu10
  • matrices10
  • fft10
  • games8
  • interactive7
  • geometry5
  • shortest paths5
  • hashing3
  • Other (7 tags)11
  • 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.

    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 33/day in 2021)

    2022

    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 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 17/day in 2023)

    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 11/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 25/day in 2026)

    508
    +15
    2205
    2022-10-23 12:05Codeforces Round 830 (Div. 2)57+612190
    2022-10-23 09:50Codeforces Round 829 (Div. 1)190+1532129
    2022-09-23 14:05Codeforces Round 822 (Div. 2)113+1031976
    2022-06-19 11:05Codeforces Round 802 (Div. 2)59+1891873
    2022-03-20 13:50Codeforces Round 778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round)744+1831684
    2022-03-06 12:10Codeforces Round 775 (Div. 2, based on Moscow Open Olympiad in Informatics)566+2031501
    2022-02-23 12:10Codeforces Round 773 (Div. 2)1212+2201298