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Top rated · Stats

lucasxia01

Open on Codeforces · Unique solved

Rating2228· 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
102
Unique solved
1,195
Submissions (all)
2,997
Years with activity
2016–2026

Solved by problem rating

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

  • Unrated159
  • 800–899142
  • 900–99941
  • 1000–109947
  • 1100–119944
  • 1200–129951
  • 1300–139957

Solved by topic

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

  • greedy446
  • math442
  • constructive algorithms287
  • implementation287
  • dp218
  • brute force213
  • sortings

Rating changes

2016

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2016

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-06-09 17:35Codeforces Global Round 26595-62228
2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)537-182234
2024-04-27 16:35Codeforces Round 941 (Div. 1)396+102252
2024-04-06 17:35Codeforces Global Round 251041-752242
2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)501
1400–1499
51
  • 1500–159941
  • 1600–169945
  • 1700–179970
  • 1800–189952
  • 1900–199947
  • 2000–209953
  • 2100–219945
  • 2200–229942
  • 2300–239942
  • 2400–249948
  • 2500–259943
  • 2600–269935
  • 2700–279910
  • 2800–289913
  • 2900–29994
  • 3000–30999
  • 3100–31992
  • 3200–32991
  • 3300–33991
  • 181
  • data structures175
  • binary search120
  • dfs and similar112
  • graphs112
  • number theory102
  • combinatorics98
  • trees90
  • strings87
  • bitmasks84
  • two pointers75
  • dsu37
  • divide and conquer33
  • games32
  • geometry32
  • interactive32
  • shortest paths30
  • probabilities20
  • hashing19
  • *special11
  • graph matchings10
  • matrices10
  • Other (8 tags)29
  • 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.

    2017

    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.

    2018

    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.

    2019

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

    Jan
    Feb
    Mar
    Apr
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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.

    2020

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

    Jan
    Feb
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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
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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
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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
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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
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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.

    2025

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

    Jan
    Feb
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    Apr
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    Jun
    Jul
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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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    Dec

    LessMore (max 10/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 16/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 36/day in 2018)

    2019

    Download PNG

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

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    LessMore (max 20/day in 2019)

    2020

    Download PNG

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

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    LessMore (max 46/day in 2020)

    2021

    Download PNG

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

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    LessMore (max 18/day in 2021)

    2022

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

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    2023

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

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    2024

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

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    2025

    Download PNG

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

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    LessMore (max 6/day in 2025)

    2026

    Download PNG

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

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    LessMore (max 4/day in 2026)

    -16
    2317
    2024-03-16 17:00Codeforces Round 934 (Div. 1)217+492333
    2024-02-29 16:35Codeforces Round 930 (Div. 1)306-82284
    2024-02-17 17:35think-cell Round 1305+312292
    2024-01-27 16:45Codeforces Round 921 (Div. 1)283+322261
    2024-01-06 17:05Hello 2024628+102229
    2023-12-30 16:50Good Bye 2023434+572219
    2023-12-23 17:35Pinely Round 3 (Div. 1 + Div. 2)1472-1022162