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bookcat

Open on Codeforces · Unique solved

Rating2431· 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
23
Unique solved
542
Submissions (all)
1,483
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated102
  • 800–89965
  • 900–99914
  • 1000–109916
  • 1100–119924
  • 1200–129920
  • 1300–139920

Solved by topic

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

  • greedy236
  • math186
  • constructive algorithms125
  • brute force117
  • dp111
  • implementation100
  • data structures

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)214+162431
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)217+252415
2025-10-30 19:35Pinely Round 5 (Div. 1 + Div. 2)165+142390
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)79+1552376
2025-07-31 17:35Codeforces Round 1040 (Div. 1)
1400–1499
16
  • 1500–159923
  • 1600–169924
  • 1700–179924
  • 1800–189922
  • 1900–199931
  • 2000–209926
  • 2100–219914
  • 2200–229920
  • 2300–239917
  • 2400–249919
  • 2500–259915
  • 2600–269911
  • 2700–27997
  • 2800–28994
  • 2900–29993
  • 3000–30993
  • 3100–31991
  • 3200–32991
  • 78
  • binary search73
  • sortings66
  • number theory51
  • graphs50
  • combinatorics47
  • dfs and similar46
  • bitmasks44
  • two pointers43
  • strings35
  • trees32
  • interactive23
  • dsu22
  • geometry18
  • games16
  • divide and conquer16
  • *special15
  • shortest paths13
  • graph matchings8
  • fft7
  • probabilities7
  • flows6
  • Other (9 tags)26
  • 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 21/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 65/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 24/day in 2026)

    512
    -35
    2221
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)304+382256
    2025-05-11 17:05Codeforces Round 1024 (Div. 1)497-492218
    2025-04-26 11:35Codeforces Round 1021 (Div. 1)145+772267
    2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)352+702190
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)815-132120
    2025-03-22 16:35Codeforces Round 1011 (Div. 2)75+842133
    2025-03-17 16:35Educational Codeforces Round 176 (Rated for Div. 2)767-392049