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Drakkon

Open on Codeforces · Unique solved

Rating2172· 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
101
Unique solved
2,987
Submissions (all)
6,201
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.

  • Unrated1,126
  • 800–899273
  • 900–99958
  • 1000–109966
  • 1100–1199126
  • 1200–1299108
  • 1300–139994

Solved by topic

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

  • greedy765
  • math635
  • dp517
  • implementation511
  • data structures389
  • constructive algorithms372

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
2025-10-05 18:35Codeforces Round 1056 (Div. 2)55+772172
2025-09-24 14:50Codeforces Round 1053 (Div. 1)707-512095
2025-09-21 16:50Codeforces Round 1052 (Div. 2)142+352146
2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)965-172111
2025-09-17 16:35Codeforces Round 1051 (Div. 2)108
1400–1499
87
  • 1500–159976
  • 1600–1699100
  • 1700–179991
  • 1800–1899116
  • 1900–1999113
  • 2000–2099124
  • 2100–219981
  • 2200–2299103
  • 2300–239975
  • 2400–249961
  • 2500–259958
  • 2600–269921
  • 2700–27999
  • 2800–28996
  • 2900–29995
  • 3000–30995
  • 3100–31992
  • 3200–32991
  • 3500–35992
  • brute force
    365
  • sortings259
  • binary search234
  • dfs and similar202
  • graphs195
  • number theory181
  • trees172
  • strings171
  • two pointers166
  • bitmasks151
  • combinatorics139
  • dsu74
  • divide and conquer67
  • games61
  • shortest paths47
  • hashing46
  • probabilities44
  • interactive34
  • geometry34
  • flows17
  • string suffix structures14
  • matrices13
  • Other (9 tags)72
  • Jun
    Jul
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    Sep
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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.

    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
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    Nov
    Dec

    LessMore (max 23/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
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    LessMore (max 36/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
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    Sep
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    LessMore (max 40/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 31/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 44/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 7/day in 2026)

    +68
    2128
    2025-09-15 16:35Educational Codeforces Round 182 (Rated for Div. 2)57+1392060
    2025-08-24 16:35Codeforces Round 1044 (Div. 2)6196-1661921
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)664+252087
    2025-07-31 17:35Codeforces Round 1040 (Div. 1)710-452062
    2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)1461-672107
    2025-02-16 16:35Codeforces Round 1005 (Div. 2)61+862174
    2025-02-11 16:35Codeforces Round 1004 (Div. 1)409+582088