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cquag

Open on Codeforces · Unique solved

Rating2158· 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
26
Unique solved
283
Submissions (all)
603
Years with activity
2021–2025

Solved by problem rating

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

  • Unrated9
  • 800–89963
  • 900–9998
  • 1000–109912
  • 1100–119922
  • 1200–12999
  • 1300–139918

Solved by topic

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

  • math121
  • greedy119
  • implementation87
  • dp67
  • constructive algorithms62
  • brute force58
  • data structures

Rating changes

2021

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

Jan
Feb
Mar
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
2025-03-23 08:05Codeforces Round 1012 (Div. 1)425-452158
2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)533+42203
2025-01-04 17:05Hello 2025636+172199
2024-12-28 17:35Good Bye 2024: 2025 is NEAR644+222182
2024-03-16 17:00Codeforces Round 934 (Div. 1)440
1400–1499
12
  • 1500–159915
  • 1600–169914
  • 1700–179915
  • 1800–189914
  • 1900–199915
  • 2000–209915
  • 2100–21999
  • 2200–22998
  • 2300–239911
  • 2400–24992
  • 2500–25995
  • 2600–26992
  • 2700–27992
  • 2800–28991
  • 2900–29991
  • 3000–30991
  • 48
  • sortings44
  • bitmasks40
  • binary search33
  • dfs and similar30
  • graphs26
  • number theory26
  • combinatorics25
  • strings23
  • trees20
  • two pointers15
  • games9
  • shortest paths8
  • dsu7
  • geometry6
  • divide and conquer5
  • interactive5
  • flows4
  • fft4
  • matrices4
  • hashing4
  • *special2
  • Other (7 tags)8
  • 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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 19/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 56/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 16/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 9/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 12/day in 2025)

    +22
    2160
    2023-10-30 16:35Codeforces Round 907 (Div. 2)107+562138
    2023-09-25 16:35Codeforces Round 899 (Div. 2)397-112082
    2023-09-11 16:35Codeforces Round 897 (Div. 2)306+22093
    2023-09-10 16:35Codeforces Round 896 (Div. 1)537-52091
    2023-08-31 16:35Educational Codeforces Round 154 (Rated for Div. 2)91+882096
    2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)1246-292008
    2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)548+592037