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DennisTran

Open on Codeforces · Unique solved

Rating2129· 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
71
Unique solved
911
Submissions (all)
2,373
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.

  • Unrated91
  • 800–89987
  • 900–99914
  • 1000–109918
  • 1100–119935
  • 1200–129926
  • 1300–139926

Solved by topic

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

  • greedy311
  • math285
  • data structures239
  • dp223
  • constructive algorithms175
  • brute force166
  • implementation

Rating changes

2021

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

Jan
Feb
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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
2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)1409-702129
2025-03-10 17:15Codeforces Round 1008 (Div. 1)395+22199
2025-02-27 16:35Educational Codeforces Round 175 (Rated for Div. 2)8+1972197
2025-02-18 16:35Educational Codeforces Round 174 (Rated for Div. 2)1057-592000
2025-02-16 16:35Codeforces Round 1005 (Div. 2)
1400–1499
28
  • 1500–159918
  • 1600–169922
  • 1700–179932
  • 1800–189943
  • 1900–199948
  • 2000–209952
  • 2100–219956
  • 2200–229954
  • 2300–239955
  • 2400–249955
  • 2500–259943
  • 2600–269926
  • 2700–279922
  • 2800–289922
  • 2900–299915
  • 3000–309911
  • 3100–31994
  • 3200–32993
  • 3300–33993
  • 3400–34991
  • 3500–35991
  • 158
  • binary search128
  • sortings112
  • dfs and similar106
  • trees106
  • graphs92
  • bitmasks86
  • strings74
  • number theory69
  • combinatorics63
  • two pointers58
  • dsu54
  • divide and conquer42
  • hashing34
  • shortest paths30
  • games25
  • probabilities20
  • interactive19
  • string suffix structures18
  • geometry17
  • matrices12
  • flows11
  • Other (9 tags)34
  • 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
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    Dec

    LessMore (max 138/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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    Dec

    LessMore (max 31/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 26/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 70/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 33/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 15/day in 2026)

    92
    +105
    2059
    2025-02-02 16:35Codeforces Round 1002 (Div. 2)565+171954
    2025-01-12 16:35Codeforces Round 996 (Div. 2)1526-501937
    2024-12-24 16:35Educational Codeforces Round 173 (Rated for Div. 2)614-181987
    2024-08-04 16:35Codeforces Round 963 (Div. 2)657-112005
    2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)1351-592016
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)3316-1572075
    2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)329+512232