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Top rated · Stats

1_Dung_1

Open on Codeforces · Unique solved

Rating2116· 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
32
Unique solved
218
Submissions (all)
429
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.

  • Unrated12
  • 800–89942
  • 900–99912
  • 1000–10997
  • 1100–119912
  • 1200–129910
  • 1300–13999

Solved by topic

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

  • greedy75
  • math69
  • data structures55
  • implementation51
  • brute force43
  • dp42
  • 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
2023-12-09 18:05Codeforces Round 914 (Div. 2)16+1802116
2023-11-24 16:35Educational Codeforces Round 158 (Rated for Div. 2)77+1541936
2023-11-03 16:35Educational Codeforces Round 157 (Rated for Div. 2)433+801782
2023-10-09 16:35Educational Codeforces Round 156 (Rated for Div. 2)3345-751702
2023-09-25 16:35Codeforces Round 899 (Div. 2)
1400–1499
9
  • 1500–15997
  • 1600–169910
  • 1700–179912
  • 1800–18999
  • 1900–199910
  • 2000–209914
  • 2100–21996
  • 2200–229911
  • 2300–23996
  • 2400–24993
  • 2500–259910
  • 2600–26992
  • 2700–27991
  • 2800–28993
  • 3200–32991
  • 40
  • binary search27
  • strings26
  • sortings25
  • trees24
  • graphs22
  • dfs and similar20
  • bitmasks17
  • two pointers16
  • number theory15
  • divide and conquer14
  • combinatorics14
  • dsu13
  • geometry5
  • shortest paths5
  • games3
  • hashing3
  • interactive2
  • ternary search2
  • 2-sat1
  • chinese remainder theorem1
  • fft1
  • Other (6 tags)6
  • 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 8/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 15/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 8/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 19/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 13/day in 2026)

    772
    +46
    1777
    2023-08-17 16:35Educational Codeforces Round 153 (Rated for Div. 2)4094-881731
    2023-08-05 16:35Codeforces Round 890 (Div. 2) supported by Constructor Institute1535-321819
    2023-07-29 17:05Codeforces Round 889 (Div. 2)352+541851
    2023-07-27 16:35Educational Codeforces Round 152 (Rated for Div. 2)780+261797
    2023-06-18 16:35Codeforces Round 880 (Div. 2)81+1741771
    2023-05-25 16:35Educational Codeforces Round 149 (Rated for Div. 2)3502-611597
    2023-05-14 16:35Codeforces Round 873 (Div. 2)176+1581658