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xlk

Open on Codeforces · Unique solved

Rating2567· 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
28
Unique solved
2,047
Submissions (all)
3,227
Years with activity
2012–2026

Solved by problem rating

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

  • Unrated92
  • 800–899461
  • 900–999127
  • 1000–1099120
  • 1100–1199130
  • 1200–1299114
  • 1300–1399117

Solved by topic

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

  • math694
  • implementation686
  • greedy609
  • brute force388
  • dp329
  • constructive algorithms283
  • sortings

Rating changes

2012

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2012

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-06-16 16:35Codeforces Round 800 (Div. 1)106+362567
2022-05-08 16:35Codeforces Round 789 (Div. 1)59+1032531
2022-01-03 16:50Hello 2022815-1042428
2021-12-29 17:35Good Bye 2021: 2022 is NEAR166+362532
2020-12-30 17:35Good Bye 202082+117
1400–1499
87
  • 1500–159995
  • 1600–1699105
  • 1700–179985
  • 1800–189978
  • 1900–199984
  • 2000–209968
  • 2100–219957
  • 2200–229937
  • 2300–239939
  • 2400–249947
  • 2500–259927
  • 2600–269933
  • 2700–279911
  • 2800–28999
  • 2900–299912
  • 3000–30996
  • 3100–31994
  • 3200–32992
  • 246
  • data structures217
  • number theory190
  • binary search172
  • strings166
  • dfs and similar126
  • graphs121
  • combinatorics106
  • bitmasks100
  • two pointers96
  • trees68
  • dsu54
  • geometry47
  • games41
  • *special40
  • shortest paths33
  • hashing32
  • probabilities31
  • divide and conquer27
  • matrices25
  • ternary search13
  • interactive12
  • Other (9 tags)42
  • 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.

    2013

    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.

    2014

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

    Jan
    Feb
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    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.

    2015

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

    Jan
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    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.

    2016

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

    Jan
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    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
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    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
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    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
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    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
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    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
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    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
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    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
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    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
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    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
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    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
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    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.

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    LessMore (max 58/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 23/day in 2013)

    2014

    Download PNG

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

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    LessMore (max 21/day in 2014)

    2015

    Download PNG

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

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    LessMore (max 16/day in 2015)

    2016

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

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    2017

    Download PNG

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

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    2018

    Download PNG

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

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    2019

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

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    2020

    Download PNG

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

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    2021

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

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    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

    Download PNG

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

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    LessMore (max 66/day in 2024)

    2025

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

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    LessMore (max 3/day in 2025)

    2026

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

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    2496
    2020-03-19 17:05Codeforces Global Round 7605-532379
    2019-07-20 18:05Codeforces Global Round 490+522432
    2019-06-01 16:50Codeforces Global Round 3346-572380
    2019-02-07 15:35Codeforces Global Round 1160+192437
    2015-02-07 20:15Rockethon 201561+592418
    2013-06-23 15:10Codeforces Round 189 (Div. 1)34+352359
    2013-04-11 17:30Codeforces Round 179 (Div. 1)54+192324