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qwexd

Open on Codeforces · Unique solved

Rating2127· 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
64
Unique solved
1,678
Submissions (all)
4,414
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.

  • Unrated229
  • 800–899172
  • 900–99940
  • 1000–109935
  • 1100–119951
  • 1200–129958
  • 1300–139958

Solved by topic

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

  • greedy661
  • math568
  • dp417
  • constructive algorithms398
  • implementation379
  • data structures351

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
2024-09-14 16:35Codeforces Round 972 (Div. 2)207+312127
2024-08-30 17:05Codeforces Round 969 (Div. 1)700-412096
2024-07-20 16:35Codeforces Round 960 (Div. 2)115+622137
2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)827+62075
2024-06-27 16:35Educational Codeforces Round 167 (Rated for Div. 2)
1400–1499
69
  • 1500–159960
  • 1600–169966
  • 1700–179970
  • 1800–189973
  • 1900–1999102
  • 2000–209995
  • 2100–2199104
  • 2200–229995
  • 2300–239987
  • 2400–249991
  • 2500–259967
  • 2600–269931
  • 2700–279911
  • 2800–28997
  • 2900–29994
  • 3000–30992
  • 3500–35991
  • brute force
    350
  • binary search237
  • sortings207
  • graphs186
  • dfs and similar184
  • number theory165
  • bitmasks162
  • combinatorics152
  • trees146
  • two pointers139
  • strings99
  • divide and conquer70
  • dsu67
  • shortest paths53
  • games43
  • interactive40
  • hashing37
  • geometry31
  • probabilities28
  • ternary search17
  • flows16
  • graph matchings14
  • Other (9 tags)49
  • 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.

    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 22/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 33/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 44/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 33/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 37/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 58/day in 2026)

    322
    +9
    2069
    2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)209+422060
    2024-06-16 11:05Codeforces Round 953 (Div. 2)110+922018
    2024-06-06 16:35Codeforces Round 951 (Div. 2)1030-281926
    2024-05-30 16:35Educational Codeforces Round 166 (Rated for Div. 2)216+831954
    2024-05-26 16:35Codeforces Round 948 (Div. 2)780+31871
    2024-05-17 16:35Codeforces Round 945 (Div. 2)618+261868
    2023-04-15 11:05Codeforces Round 866 (Div. 2)449-81842