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Top rated · Stats

lahlah

Open on Codeforces · Unique solved

Rating2126· 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
41
Unique solved
497
Submissions (all)
1,271
Years with activity
2018–2026

Solved by problem rating

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

  • Unrated6
  • 800–89929
  • 900–99913
  • 1000–109914
  • 1100–11996
  • 1200–129915
  • 1300–139913

Solved by topic

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

  • math158
  • dp146
  • greedy137
  • data structures122
  • constructive algorithms100
  • implementation83
  • graphs

Rating changes

2018

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-03-06 12:10Codeforces Round 775 (Div. 1, based on Moscow Open Olympiad in Informatics)184+1392126
2022-03-04 17:35Codeforces Round 774 (Div. 2)448-191987
2022-02-23 12:10Codeforces Round 773 (Div. 1)715-452006
2021-11-26 13:15Codeforces Round 757 (Div. 2)81+942051
2021-10-25 08:35Codeforces Round 751 (Div. 1)
1400–1499
18
  • 1500–159915
  • 1600–169912
  • 1700–179914
  • 1800–189913
  • 1900–199929
  • 2000–209922
  • 2100–219917
  • 2200–229923
  • 2300–239941
  • 2400–249918
  • 2500–259929
  • 2600–269939
  • 2700–279922
  • 2800–289920
  • 2900–299919
  • 3000–309912
  • 3100–319913
  • 3200–32997
  • 3300–339910
  • 3400–34994
  • 3500–35994
  • 77
  • brute force71
  • dfs and similar60
  • combinatorics54
  • trees54
  • sortings49
  • number theory49
  • binary search46
  • bitmasks46
  • strings30
  • two pointers29
  • divide and conquer27
  • shortest paths21
  • dsu20
  • flows18
  • probabilities16
  • geometry14
  • matrices14
  • string suffix structures14
  • games11
  • hashing11
  • fft9
  • Other (7 tags)22
  • 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.

    2019

    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.

    2020

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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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.

    2021

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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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
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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
    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.

    2024

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    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.

    2025

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

    Jan
    Feb
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    Jun
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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.

    2026

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    Aug
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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 11/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 16/day in 2019)

    2020

    Download PNG

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

    Jan
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    2021

    Download PNG

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

    Jan
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    LessMore (max 33/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 30/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 7/day in 2023)

    2024

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 16/day in 2024)

    2025

    Download PNG

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

    Jan
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    Mar
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    May
    Jun
    Jul
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    LessMore (max 10/day in 2025)

    2026

    Download PNG

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

    Jan
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    LessMore (max 6/day in 2026)

    429
    +15
    1957
    2021-06-20 12:05Codeforces Round 727 (Div. 2)60+1671942
    2021-06-06 16:35Codeforces Round 724 (Div. 2)2768-861775
    2021-05-02 17:35Codeforces Global Round 141532+31861
    2020-11-01 13:05Codeforces Round 680 (Div. 2, based on Moscow Team Olympiad)378+141858
    2020-10-25 13:05Codeforces Round 679 (Div. 2, based on Technocup 2021 Elimination Round 1)117+1071844
    2020-10-24 16:15Codeforces Round 678 (Div. 2)9265-2051737
    2020-09-30 17:20Grakn Forces 20201397-171942