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CQYZWJH

Open on Codeforces · Unique solved

Rating2204· 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
16
Unique solved
922
Submissions (all)
2,320
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.

  • Unrated113
  • 800–89971
  • 900–99917
  • 1000–109915
  • 1100–119924
  • 1200–129917
  • 1300–139920

Solved by topic

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

  • math266
  • greedy258
  • dp238
  • data structures228
  • constructive algorithms193
  • implementation129

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
2023-03-12 16:35Nebius Welcome Round (Div. 1 + Div. 2)1077-882204
2023-03-09 12:35Codeforces Round 857 (Div. 1)103+1352292
2022-10-23 09:50Codeforces Round 829 (Div. 1)434+102157
2022-08-27 16:35Educational Codeforces Round 134 (Rated for Div. 2)11+2002147
2022-08-20 16:50Codeforces Round 816 (Div. 2)
1400–1499
24
  • 1500–159916
  • 1600–169928
  • 1700–179926
  • 1800–189928
  • 1900–199937
  • 2000–209950
  • 2100–219924
  • 2200–229936
  • 2300–239945
  • 2400–249963
  • 2500–259958
  • 2600–269954
  • 2700–279926
  • 2800–289922
  • 2900–299922
  • 3000–309934
  • 3100–319920
  • 3200–329913
  • 3300–339912
  • 3400–34993
  • 3500–35994
  • brute force
    125
  • graphs111
  • trees96
  • binary search95
  • sortings93
  • dfs and similar91
  • combinatorics90
  • bitmasks80
  • number theory80
  • two pointers63
  • strings56
  • dsu44
  • divide and conquer43
  • interactive33
  • probabilities32
  • shortest paths30
  • geometry25
  • matrices23
  • fft21
  • hashing17
  • games14
  • string suffix structures13
  • Other (7 tags)33
  • 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 31/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 40/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 35/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 1/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 21/day in 2025)

    340
    +36
    1947
    2022-06-25 16:50Codeforces Global Round 21853+521911
    2022-06-19 11:05Codeforces Round 802 (Div. 2)300+621859
    2022-05-14 11:35Codeforces Round 791 (Div. 2)264+961797
    2022-04-08 16:35Codeforces Round 781 (Div. 2)2342-731701
    2021-11-14 08:20Codeforces Round 755 (Div. 2, based on Technocup 2022 Elimination Round 2)1163-801774
    2021-10-30 16:35Codeforces Round 752 (Div. 2)264+1021854
    2021-10-25 08:35Codeforces Round 751 (Div. 2)283+1351752