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Top rated · Stats

johannesk

Open on Codeforces · Unique solved

Rating2210· 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
41
Unique solved
372
Submissions (all)
1,096
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.

  • Unrated39
  • 800–89926
  • 900–99912
  • 1000–109916
  • 1100–119915
  • 1200–129920
  • 1300–139916

Solved by topic

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

  • implementation124
  • greedy113
  • math97
  • brute force58
  • constructive algorithms55
  • dp52
  • data structures

Rating changes

2012

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

Jan
Feb
Mar
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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
2023-10-08 11:35Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round)770-912210
2020-07-24 16:35Codeforces Round 659 (Div. 1)581-582301
2020-06-18 17:15Codeforces Global Round 8223+532359
2020-06-04 17:05Codeforces Round 647 (Div. 1) - Thanks, Algo Muse!123+1052306
2020-05-12 15:05Codeforces Round 641 (Div. 1)
1400–1499
12
  • 1500–159930
  • 1600–169943
  • 1700–179930
  • 1800–189918
  • 1900–199925
  • 2000–209915
  • 2100–219913
  • 2200–229913
  • 2300–239910
  • 2400–24997
  • 2500–25995
  • 2600–26994
  • 2700–27991
  • 2800–28991
  • 2900–29991
  • 47
  • sortings45
  • binary search40
  • graphs38
  • *special32
  • strings32
  • dfs and similar28
  • number theory27
  • combinatorics20
  • two pointers19
  • trees16
  • shortest paths14
  • bitmasks12
  • dsu9
  • geometry9
  • probabilities7
  • games7
  • hashing7
  • interactive5
  • matrices5
  • divide and conquer3
  • expression parsing2
  • Other (5 tags)6
  • Jun
    Jul
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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.

    2013

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

    Jan
    Feb
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    Aug
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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.

    2014

    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.

    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).

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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
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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).

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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 9/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 7/day in 2013)

    2014

    Download PNG

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

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    LessMore (max 19/day in 2014)

    2015

    Download PNG

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

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    LessMore (max 57/day in 2015)

    2016

    Download PNG

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

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    2017

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    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

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    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

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

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    LessMore (max 5/day in 2024)

    2025

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

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    LessMore (max 8/day in 2025)

    2026

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

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    533
    -12
    2201
    2019-08-25 16:40Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2)315+172213
    2019-06-07 14:05Codeforces Round 564 (Div. 1)366-682196
    2019-06-01 16:50Codeforces Global Round 3210+332264
    2019-04-29 16:35Codeforces Round 556 (Div. 1)179+402231
    2019-04-20 20:35Forethought Future Cup - Elimination Round196+242191
    2018-10-07 19:05Lyft Level 5 Challenge 2018 - Elimination Round253+232167
    2018-09-07 16:35Educational Codeforces Round 50 (Rated for Div. 2)61+572144