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eren__

Open on Codeforces · Unique solved

Rating2517· 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
27
Unique solved
284
Submissions (all)
697
Years with activity
2023–2025

Solved by problem rating

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

  • Unrated4
  • 800–89932
  • 900–9997
  • 1000–109910
  • 1100–119914
  • 1200–129913
  • 1300–13999

Solved by topic

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

  • greedy145
  • math121
  • constructive algorithms82
  • dp75
  • brute force68
  • data structures60
  • implementation

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-03-23 08:05Codeforces Round 1012 (Div. 1)221-672517
2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)158+342584
2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)133+352550
2025-01-04 17:05Hello 2025105+982515
2024-12-28 17:35Good Bye 2024: 2025 is NEAR
1400–1499
13
  • 1500–15999
  • 1600–169912
  • 1700–179913
  • 1800–189912
  • 1900–199911
  • 2000–209917
  • 2100–21999
  • 2200–229912
  • 2300–239911
  • 2400–249910
  • 2500–259915
  • 2600–269915
  • 2700–27999
  • 2800–28995
  • 2900–29996
  • 3000–30993
  • 3100–31995
  • 3200–32992
  • 3300–33995
  • 3400–34991
  • 59
  • sortings46
  • binary search41
  • trees40
  • graphs39
  • dfs and similar37
  • bitmasks37
  • combinatorics29
  • number theory28
  • two pointers20
  • divide and conquer18
  • dsu17
  • strings16
  • games14
  • interactive9
  • shortest paths8
  • probabilities6
  • matrices5
  • *special5
  • hashing5
  • geometry5
  • fft3
  • Other (7 tags)11
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 42/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 18/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 23/day in 2025)

    250
    +44
    2417
    2024-12-19 17:35Codeforces Global Round 28375-72373
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)779-842380
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)292-42464
    2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)58+1352468
    2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)191+652333
    2024-06-09 17:35Codeforces Global Round 26256+752268
    2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)251+792193