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penguinman

Open on Codeforces · Unique solved

Rating2672· 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
67
Unique solved
1,005
Submissions (all)
2,653
Years with activity
2019–2025

Solved by problem rating

Unique accepted problems, bucketed by catalog rating (100‑point bands). Unrated = no rating in the problem set.

  • Unrated116
  • 800–899115
  • 900–99937
  • 1000–109941
  • 1100–119935
  • 1200–129953
  • 1300–139945

Solved by topic

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

  • greedy405
  • math362
  • implementation247
  • constructive algorithms233
  • dp193
  • data structures175

Rating changes

2019

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

2019

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)86+212672
2025-05-31 16:35Codeforces Round 1028 (Div. 1)83+462651
2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)529-1112605
2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)32+1302716
2025-03-10 17:15
1400–1499
44
  • 1500–159960
  • 1600–169942
  • 1700–179951
  • 1800–189942
  • 1900–199947
  • 2000–209941
  • 2100–219943
  • 2200–229931
  • 2300–239930
  • 2400–249922
  • 2500–259920
  • 2600–269920
  • 2700–279924
  • 2800–289918
  • 2900–299911
  • 3000–30997
  • 3100–31996
  • 3200–32992
  • 3300–33992
  • brute force
    172
  • binary search138
  • sortings134
  • two pointers94
  • graphs90
  • number theory88
  • dfs and similar81
  • combinatorics70
  • bitmasks65
  • trees61
  • strings53
  • dsu42
  • divide and conquer31
  • shortest paths25
  • geometry23
  • games23
  • interactive21
  • hashing20
  • probabilities12
  • ternary search12
  • matrices11
  • fft10
  • Other (8 tags)32
  • 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.

    2020

    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.

    2021

    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.

    2022

    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.

    2023

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

    Jan
    Feb
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    Jun
    Jul
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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
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    Apr
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    Jun
    Jul
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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.

    2025

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

    Jan
    Feb
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    Apr
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    Jun
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    Aug
    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.

    May
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    LessMore (max 13/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 55/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 26/day in 2021)

    2022

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 13/day in 2022)

    2023

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 1/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
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    Dec

    LessMore (max 43/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
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    LessMore (max 45/day in 2025)

    Codeforces Round 1008 (Div. 1)
    36
    +156
    2586
    2025-01-04 17:05Hello 2025148+942430
    2024-12-28 17:35Good Bye 2024: 2025 is NEAR468+62336
    2024-12-19 17:35Codeforces Global Round 28312+302330
    2024-12-03 08:25Codeforces Round 990 (Div. 1)535-992300
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)345+12399
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)603-722398
    2024-10-27 17:35Codeforces Global Round 27268-32470