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Top rated · Stats

lewc

Open on Codeforces · Unique solved

Rating2419· 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
39
Unique solved
582
Submissions (all)
1,524
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated150
  • 800–899155
  • 900–99916
  • 1000–109913
  • 1100–119917
  • 1200–129919
  • 1300–139921

Solved by topic

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

  • greedy184
  • math178
  • implementation153
  • brute force105
  • constructive algorithms105
  • dp79
  • data structures

Rating changes

2021

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

2021

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-16 16:35Codeforces Round 1064 (Div. 1)44+1922419
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)442+142227
2025-04-03 16:35Educational Codeforces Round 177 (Rated for Div. 2)8+2142213
2025-03-17 16:35Educational Codeforces Round 176 (Rated for Div. 2)189+781999
2025-02-02 16:35Codeforces Round 1002 (Div. 2)
1400–1499
19
  • 1500–159919
  • 1600–169914
  • 1700–179916
  • 1800–189916
  • 1900–199924
  • 2000–209912
  • 2100–219915
  • 2200–22995
  • 2300–23998
  • 2400–249913
  • 2500–25996
  • 2600–26997
  • 2700–27997
  • 2800–28994
  • 2900–29991
  • 3000–30991
  • 3200–32992
  • 3300–33991
  • 3400–34991
  • 67
  • binary search64
  • sortings46
  • strings45
  • number theory36
  • bitmasks32
  • trees29
  • *special27
  • two pointers25
  • dfs and similar25
  • graphs22
  • combinatorics21
  • interactive20
  • divide and conquer19
  • games16
  • dsu15
  • geometry10
  • graph matchings8
  • probabilities8
  • shortest paths7
  • hashing5
  • meet-in-the-middle2
  • Other (9 tags)12
  • 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.

    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.

    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.

    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
    Oct
    Nov
    Dec

    LessMore (max 36/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
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    Jun
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    LessMore (max 22/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    Aug
    Sep
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    LessMore (max 71/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 30/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 59/day in 2025)

    2026

    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 29/day in 2026)

    1023
    -19
    1921
    2024-12-20 16:35Codeforces Round 994 (Div. 2)1032-331940
    2024-12-19 17:35Codeforces Global Round 28644+721973
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)1513-351901
    2024-10-19 16:20Codeforces Round 979 (Div. 2)1272-551936
    2024-09-20 16:35Codeforces Round 973 (Div. 2)548-41991
    2024-09-14 16:35Codeforces Round 972 (Div. 2)690-121995
    2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)317+302007