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Darren0724

Open on Codeforces · Unique solved

Rating2411· 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
97
Unique solved
1,223
Submissions (all)
2,698
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.

  • Unrated127
  • 800–899208
  • 900–99943
  • 1000–109947
  • 1100–119957
  • 1200–129959
  • 1300–139951

Solved by topic

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

  • greedy507
  • math453
  • implementation279
  • constructive algorithms269
  • dp243
  • brute force226
  • data structures

Rating changes

2021

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

Jan
Feb
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May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-07 17:35Hello 2026289+132411
2025-12-27 17:35Good Bye 2025117+1212398
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)428-62277
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)595-252283
2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)365
1400–1499
64
  • 1500–159944
  • 1600–169959
  • 1700–179966
  • 1800–189950
  • 1900–199951
  • 2000–209959
  • 2100–219959
  • 2200–229944
  • 2300–239935
  • 2400–249934
  • 2500–259925
  • 2600–269914
  • 2700–279914
  • 2800–28992
  • 2900–29995
  • 3000–30993
  • 3100–31991
  • 3300–33991
  • 3500–35991
  • 204
  • sortings170
  • binary search125
  • number theory106
  • dfs and similar100
  • combinatorics95
  • graphs94
  • strings94
  • bitmasks93
  • trees89
  • two pointers74
  • dsu45
  • games36
  • divide and conquer33
  • geometry32
  • *special32
  • interactive31
  • shortest paths21
  • probabilities19
  • hashing16
  • matrices10
  • ternary search7
  • Other (10 tags)33
  • Jun
    Jul
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    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
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    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
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    Apr
    May
    Jun
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    Aug
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    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
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    Dec

    LessMore (max 23/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 53/day in 2023)

    2024

    Download PNG

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

    Jan
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    May
    Jun
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    Sep
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    Dec

    LessMore (max 23/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
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    Dec

    LessMore (max 18/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    Dec

    LessMore (max 16/day in 2026)

    +31
    2308
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)334-22277
    2025-02-11 16:35Codeforces Round 1004 (Div. 1)471-362279
    2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)469+112315
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)180+892304
    2025-01-04 17:05Hello 2025525+322215
    2024-12-03 08:25Codeforces Round 990 (Div. 1)463-492183
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)827-462232