CF Elite Tracker
TopExploreDivisionsLearnPracticeUser solvedHelp
HelpLog inSign up

Top rated · Stats

kcn999

Open on Codeforces · Unique solved

Rating2132· 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
14
Unique solved
250
Submissions (all)
571
Years with activity
2019–2023

Solved by problem rating

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

  • Unrated1
  • 800–89918
  • 900–9998
  • 1000–10999
  • 1100–11997
  • 1200–129910
  • 1300–13997

Solved by topic

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

  • math90
  • dp72
  • data structures66
  • greedy64
  • brute force48
  • constructive algorithms41
  • implementation

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
2022-06-25 16:50Codeforces Global Round 21298+1072132
2022-04-22 16:35Educational Codeforces Round 127 (Rated for Div. 2)602-482025
2022-04-19 16:35Codeforces Round 783 (Div. 1)262+1222073
2021-10-25 08:35Codeforces Round 751 (Div. 2)45+1081951
2021-07-14 16:35Educational Codeforces Round 111 (Rated for Div. 2)
1400–1499
3
  • 1500–159911
  • 1600–16995
  • 1700–17997
  • 1800–18997
  • 1900–199922
  • 2000–209911
  • 2100–219916
  • 2200–229916
  • 2300–239921
  • 2400–249913
  • 2500–259911
  • 2600–269913
  • 2700–279913
  • 2800–28995
  • 2900–29996
  • 3000–30993
  • 3100–31994
  • 3200–32991
  • 3400–34991
  • 3500–35991
  • 35
  • graphs34
  • dfs and similar30
  • combinatorics30
  • bitmasks29
  • trees28
  • sortings28
  • number theory26
  • binary search20
  • strings18
  • dsu16
  • divide and conquer14
  • probabilities13
  • shortest paths12
  • two pointers12
  • hashing10
  • geometry7
  • string suffix structures7
  • games4
  • ternary search3
  • meet-in-the-middle2
  • matrices2
  • Other (4 tags)5
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 10/day in 2019)

    2020

    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 13/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 34/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 9/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 1/day in 2023)

    163
    +162
    1843
    2021-07-11 16:35Codeforces Round 732 (Div. 2)1133+191681
    2021-06-06 16:35Codeforces Round 724 (Div. 2)794+761662
    2021-03-10 14:05Codeforces Round 706 (Div. 2)1245+361586
    2021-03-06 16:20Codeforces Round 705 (Div. 2)1703+341550
    2021-02-07 16:50Codeforces Round 700 (Div. 2)2304+231516
    2020-11-01 13:05Codeforces Round 680 (Div. 2, based on Moscow Team Olympiad)1655+101493
    2020-10-25 13:05Codeforces Round 679 (Div. 2, based on Technocup 2021 Elimination Round 1)3125-761483