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qfl_zzz

Open on Codeforces · Unique solved

Rating2154· 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
157
Unique solved
2,220
Submissions (all)
5,652
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated437
  • 800–899302
  • 900–99968
  • 1000–109958
  • 1100–119975
  • 1200–129971
  • 1300–139975

Solved by topic

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

  • greedy777
  • math698
  • dp462
  • data structures455
  • implementation452
  • brute force413
  • constructive algorithms

Rating changes

2022

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-12-02 16:35Educational Codeforces Round 172 (Rated for Div. 2)17+1682154
2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)547+911986
2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)1768-391895
2024-11-15 14:35Codeforces Round 987 (Div. 2)814-211934
2024-11-10 17:35Codeforces Round 986 (Div. 2)
1400–1499
80
  • 1500–159963
  • 1600–1699105
  • 1700–1799118
  • 1800–1899113
  • 1900–1999144
  • 2000–2099108
  • 2100–2199111
  • 2200–229992
  • 2300–239965
  • 2400–249950
  • 2500–259942
  • 2600–269918
  • 2700–27998
  • 2800–28998
  • 2900–29995
  • 3000–30992
  • 3100–31992
  • 397
  • binary search258
  • sortings250
  • number theory215
  • dfs and similar179
  • bitmasks173
  • two pointers171
  • graphs160
  • trees156
  • strings150
  • combinatorics133
  • dsu80
  • divide and conquer76
  • games53
  • hashing42
  • shortest paths39
  • geometry35
  • interactive32
  • probabilities27
  • string suffix structures20
  • flows19
  • fft17
  • Other (8 tags)72
  • 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.

    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 47/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 51/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 29/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)

    189
    +78
    1955
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)3187-1421877
    2024-11-01 16:35Codeforces Round 983 (Div. 2)197+652019
    2024-10-28 16:35Educational Codeforces Round 171 (Rated for Div. 2)1469-621954
    2024-10-27 17:35Codeforces Global Round 271015-42016
    2024-10-26 16:35Codeforces Round 982 (Div. 2)154+642020
    2024-10-20 11:05Codeforces Round 980 (Div. 1)575+481956
    2024-10-19 16:20Codeforces Round 979 (Div. 2)1801-741908