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MAOooOAM

Open on Codeforces · Unique solved

Rating2839· 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
19
Unique solved
549
Submissions (all)
1,372
Years with activity
2020–2024

Solved by problem rating

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

  • Unrated339
  • 800–89928
  • 900–9997
  • 1000–10995
  • 1100–11995
  • 1200–12994
  • 1300–13999

Solved by topic

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

  • greedy90
  • math77
  • constructive algorithms62
  • dp60
  • brute force52
  • implementation45
  • data structures

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-02-17 17:35think-cell Round 153+142839
2023-07-23 17:05Codeforces Round 887 (Div. 1)29+772825
2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)122-362748
2023-05-28 17:05Codeforces Round 875 (Div. 1)47+272784
2023-04-29 16:50Codeforces Round 869 (Div. 1)28
1400–1499
10
  • 1500–15995
  • 1600–16996
  • 1700–179912
  • 1800–18998
  • 1900–199916
  • 2000–20998
  • 2100–21997
  • 2200–22995
  • 2300–23999
  • 2400–249916
  • 2500–259911
  • 2600–26994
  • 2700–27995
  • 2800–289921
  • 2900–29993
  • 3000–30991
  • 3100–31993
  • 3200–32991
  • 3400–34991
  • 38
  • binary search31
  • combinatorics28
  • trees26
  • dfs and similar25
  • graphs24
  • sortings24
  • bitmasks20
  • number theory19
  • divide and conquer16
  • strings15
  • two pointers14
  • dsu10
  • probabilities9
  • games8
  • interactive8
  • graph matchings6
  • hashing5
  • shortest paths4
  • 2-sat4
  • flows4
  • ternary search4
  • Other (5 tags)10
  • 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
    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 29/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 20/day in 2021)

    2022

    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 51/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 36/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 19/day in 2024)

    +105
    2757
    2023-04-15 11:05Codeforces Round 866 (Div. 1)113-302652
    2022-12-30 17:05Good Bye 2022: 2023 is NEAR114+312682
    2022-10-15 16:50Codeforces Global Round 2399+422651
    2022-10-07 17:05Dytechlab Cup 2022105+302609
    2022-09-30 17:05Codeforces Global Round 2281+672579
    2022-07-16 16:35Codeforces Round 808 (Div. 1)131+212512
    2022-06-25 16:50Codeforces Global Round 21328-312491