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Top rated · Stats

est_stella

Open on Codeforces · Unique solved

Rating2499· 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
64
Unique solved
736
Submissions (all)
2,026
Years with activity
2019–2026

Solved by problem rating

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

  • Unrated382
  • 800–89939
  • 900–99914
  • 1000–109912
  • 1100–119916
  • 1200–129920
  • 1300–139915

Solved by topic

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

  • math154
  • greedy151
  • constructive algorithms102
  • implementation92
  • dp70
  • data structures65
  • brute force

Rating changes

2019

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2019

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)134+662499
2024-04-27 16:35Codeforces Round 941 (Div. 1)69+1442433
2024-04-06 17:35Codeforces Global Round 251115-962289
2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)715-772385
2023-12-30 16:50Good Bye 2023
1400–1499
21
  • 1500–159922
  • 1600–169914
  • 1700–179919
  • 1800–189928
  • 1900–199923
  • 2000–209916
  • 2100–219918
  • 2200–229917
  • 2300–239918
  • 2400–249913
  • 2500–259910
  • 2600–26998
  • 2800–28994
  • 2900–29994
  • 3000–30993
  • 62
  • sortings58
  • binary search41
  • graphs41
  • dfs and similar37
  • combinatorics32
  • strings30
  • trees28
  • bitmasks27
  • number theory26
  • two pointers24
  • dsu18
  • games17
  • geometry16
  • interactive13
  • hashing7
  • divide and conquer7
  • probabilities6
  • shortest paths5
  • graph matchings3
  • fft3
  • matrices3
  • Other (7 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.

    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
    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.

    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
    Jul
    Aug
    Sep
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    Nov
    Dec

    LessMore (max 15/day in 2019)

    2020

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 36/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    Dec

    LessMore (max 41/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    Jun
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    LessMore (max 18/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
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    Dec

    LessMore (max 48/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 62/day in 2024)

    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 4/day in 2026)

    277
    +18
    2462
    2023-09-30 17:35Codeforces Round 901 (Div. 1)182+222444
    2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)430-442422
    2023-07-29 17:05Codeforces Round 889 (Div. 1)93+912466
    2023-07-23 17:05Codeforces Round 887 (Div. 1)185+242375
    2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)733-822351
    2023-05-08 14:05Codeforces Round 872 (Div. 1)407-852433
    2022-09-30 17:05Codeforces Global Round 22396-692518