CF Elite Tracker
TopExploreDivisionsLearnPracticeUser solvedHelp
HelpLog inSign up

Top rated · Stats

Lain

Open on Codeforces · Unique solved

Rating2203· 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
117
Unique solved
1,293
Submissions (all)
2,949
Years with activity
2020–2024

Solved by problem rating

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

  • Unrated187
  • 800–899161
  • 900–99940
  • 1000–109955
  • 1100–119952
  • 1200–129953
  • 1300–139948

Solved by topic

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

  • greedy482
  • math447
  • constructive algorithms281
  • implementation279
  • dp243
  • brute force212
  • data structures

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-04-06 17:35Codeforces Global Round 25402+512203
2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)543+312152
2024-03-16 17:00Codeforces Round 934 (Div. 1)556+02121
2023-11-07 16:35Codeforces Round 908 (Div. 1)655-532121
2023-10-30 16:35Codeforces Round 907 (Div. 2)61
1400–1499
73
  • 1500–159988
  • 1600–169988
  • 1700–179974
  • 1800–189950
  • 1900–199952
  • 2000–209949
  • 2100–219944
  • 2200–229950
  • 2300–239936
  • 2400–249932
  • 2500–259932
  • 2600–269916
  • 2700–27998
  • 2800–28992
  • 2900–29992
  • 3000–30991
  • 169
  • sortings155
  • binary search141
  • graphs122
  • number theory108
  • dfs and similar104
  • strings92
  • trees85
  • two pointers85
  • combinatorics74
  • bitmasks72
  • dsu41
  • geometry40
  • games32
  • shortest paths31
  • interactive27
  • divide and conquer24
  • hashing20
  • probabilities13
  • graph matchings10
  • flows8
  • ternary search7
  • Other (9 tags)32
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 24/day in 2020)

    2021

    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 60/day in 2021)

    2022

    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 33/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
    Nov
    Dec

    LessMore (max 59/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 32/day in 2024)

    +83
    2174
    2023-10-28 17:05Codeforces Round 906 (Div. 1)746-812091
    2023-10-09 16:35Educational Codeforces Round 156 (Rated for Div. 2)38+1162172
    2023-09-30 17:35Codeforces Round 901 (Div. 1)755-502056
    2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)816-112106
    2022-12-17 17:05Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)876-412117
    2022-11-26 16:35Codeforces Global Round 24486+02158
    2022-11-20 17:05Pinely Round 1 (Div. 1 + Div. 2)410+272158