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zltzlt

Open on Codeforces · Unique solved

Rating2772· International Grandmaster

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
85
Unique solved
5,520
Submissions (all)
13,277
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.

  • Unrated57
  • 800–899642
  • 900–999167
  • 1000–1099172
  • 1100–1199195
  • 1200–1299198
  • 1300–1399209

Solved by topic

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

  • greedy2,065
  • math1,961
  • dp1,500
  • implementation1,270
  • data structures1,267
  • constructive algorithms1,242

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
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)102-312772
2025-12-06 10:15Codeforces Round 1069 (Div. 1)9+1342803
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)48+862669
2025-11-16 16:35Codeforces Round 1064 (Div. 1)356-1092583
2025-09-24 14:50Codeforces Round 1053 (Div. 1)
1400–1499
200
  • 1500–1599202
  • 1600–1699202
  • 1700–1799256
  • 1800–1899240
  • 1900–1999293
  • 2000–2099238
  • 2100–2199218
  • 2200–2299254
  • 2300–2399220
  • 2400–2499262
  • 2500–2599257
  • 2600–2699193
  • 2700–2799165
  • 2800–2899133
  • 2900–2999106
  • 3000–3099102
  • 3100–319973
  • 3200–329980
  • 3300–339961
  • 3400–349939
  • 3500–359986
  • brute force
    1,054
  • binary search752
  • graphs699
  • sortings698
  • dfs and similar607
  • trees585
  • combinatorics545
  • number theory524
  • bitmasks487
  • strings422
  • two pointers398
  • dsu253
  • divide and conquer247
  • interactive187
  • shortest paths170
  • games168
  • probabilities163
  • hashing145
  • geometry136
  • flows87
  • matrices83
  • string suffix structures64
  • Other (10 tags)288
  • 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 73/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 62/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 45/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 74/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 38/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 27/day in 2026)

    109
    -1
    2692
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)28+1612693
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)168-82532
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)126+482540
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)296-72492
    2025-05-31 16:35Codeforces Round 1028 (Div. 1)594-1352499
    2025-04-26 11:35Codeforces Round 1021 (Div. 1)152-582634
    2025-03-23 08:05Codeforces Round 1012 (Div. 1)56+212692