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CTHOOH

Open on Codeforces · Unique solved

Rating2473· 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
33
Unique solved
996
Submissions (all)
2,744
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.

  • Unrated20
  • 800–899108
  • 900–99917
  • 1000–109922
  • 1100–119926
  • 1200–129930
  • 1300–139931

Solved by topic

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

  • greedy348
  • math317
  • dp314
  • data structures287
  • constructive algorithms217
  • implementation192

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-02-23 17:05Codeforces Round 1082 (Div. 1)132+252473
2026-02-11 17:35Codeforces Round 1079 (Div. 1)348-772448
2025-12-27 17:35Good Bye 2025109+822525
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)393-352443
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)57
1400–1499
18
  • 1500–159922
  • 1600–169919
  • 1700–179939
  • 1800–189932
  • 1900–199943
  • 2000–209953
  • 2100–219950
  • 2200–2299106
  • 2300–239958
  • 2400–2499102
  • 2500–259944
  • 2600–269950
  • 2700–279917
  • 2800–289918
  • 2900–299918
  • 3000–309916
  • 3100–31999
  • 3200–329913
  • 3300–33999
  • 3400–34994
  • 3500–35992
  • brute force
    182
  • graphs147
  • dfs and similar136
  • trees123
  • binary search118
  • bitmasks114
  • sortings110
  • combinatorics94
  • number theory88
  • strings86
  • two pointers73
  • divide and conquer51
  • dsu51
  • hashing37
  • interactive36
  • shortest paths35
  • games27
  • probabilities26
  • string suffix structures18
  • matrices17
  • geometry17
  • flows14
  • Other (9 tags)54
  • 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 40/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 28/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 20/day in 2026)

    +143
    2478
    2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)1+2802335
    2025-09-21 16:50Codeforces Round 1052 (Div. 2)320+102055
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)4804-1962045
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)288+322241
    2025-01-04 17:05Hello 2025383+722209
    2024-09-27 16:05Codeforces Round 975 (Div. 1)568-52137
    2024-08-30 17:05Codeforces Round 969 (Div. 1)490+72142