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zhlzt

Open on Codeforces · Unique solved

Rating2120· 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
23
Unique solved
676
Submissions (all)
1,371
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated2
  • 800–89931
  • 900–9995
  • 1000–10996
  • 1100–11996
  • 1200–12999
  • 1300–13998

Solved by topic

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

  • greedy277
  • math236
  • dp218
  • data structures185
  • constructive algorithms160
  • implementation157

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-27 17:35Good Bye 20252562-1222120
2025-12-06 10:15Codeforces Round 1069 (Div. 1)148+872242
2025-08-26 16:35Codeforces Round 1045 (Div. 2)64+962155
2025-08-24 16:35Codeforces Round 1044 (Div. 2)396+22059
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)1154
1400–1499
11
  • 1500–159913
  • 1600–169926
  • 1700–179959
  • 1800–189928
  • 1900–199958
  • 2000–2099192
  • 2100–219974
  • 2200–229955
  • 2300–239947
  • 2400–249919
  • 2500–259913
  • 2600–26997
  • 2700–27993
  • 2800–28992
  • 3100–31991
  • 3200–32991
  • brute force
    147
  • binary search122
  • sortings112
  • dfs and similar111
  • trees100
  • graphs97
  • number theory67
  • combinatorics67
  • two pointers64
  • bitmasks58
  • strings43
  • dsu36
  • divide and conquer35
  • interactive32
  • shortest paths22
  • hashing22
  • geometry21
  • games21
  • probabilities18
  • ternary search14
  • matrices8
  • string suffix structures8
  • Other (7 tags)28
  • 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 57/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 18/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)

    -28
    2057
    2025-07-27 16:35Codeforces Round 1039 (Div. 2)86+962085
    2025-07-22 16:35Educational Codeforces Round 181 (Rated for Div. 2)468+101989
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)1212+81979
    2025-07-05 16:35Codeforces Round 1035 (Div. 2)954-281971
    2025-06-23 16:35Educational Codeforces Round 180 (Rated for Div. 2)70+1341999
    2025-06-21 16:35Codeforces Round 1033 (Div. 2) and CodeNite 20253608-1181865
    2025-06-15 11:05Codeforces Round 1031 (Div. 2)142+681983