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Top rated · Stats

darnley

Open on Codeforces · Unique solved

Rating2435· 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
64
Unique solved
469
Submissions (all)
1,479
Years with activity
2010–2026

Solved by problem rating

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

  • Unrated112
  • 800–89942
  • 900–9994
  • 1000–10999
  • 1100–11997
  • 1200–129916
  • 1300–139920

Solved by topic

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

  • *special150
  • greedy134
  • implementation129
  • math122
  • constructive algorithms84
  • dp78
  • brute force

Rating changes

2010

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2010

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-05-31 16:35Codeforces Round 1028 (Div. 1)109+942435
2023-09-30 17:35Codeforces Round 901 (Div. 1)153+832341
2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)816-522258
2023-03-09 12:35Codeforces Round 857 (Div. 1)659-1232310
2023-01-15 15:05VK Cup 2022 - Отборочный раунд (Engine)
1400–1499
12
  • 1500–159925
  • 1600–169932
  • 1700–179922
  • 1800–189920
  • 1900–199924
  • 2000–209923
  • 2100–219914
  • 2200–229915
  • 2300–239918
  • 2400–249918
  • 2500–259914
  • 2600–26998
  • 2700–27999
  • 2800–28991
  • 2900–29993
  • 3200–32991
  • 67
  • data structures56
  • sortings53
  • dfs and similar46
  • graphs46
  • binary search45
  • strings37
  • bitmasks33
  • two pointers27
  • trees25
  • combinatorics23
  • number theory23
  • dsu16
  • probabilities12
  • shortest paths11
  • geometry11
  • games9
  • interactive9
  • hashing8
  • divide and conquer7
  • matrices5
  • graph matchings3
  • Other (6 tags)12
  • Jun
    Jul
    Aug
    Sep
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    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.

    2011

    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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    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.

    2012

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

    Jan
    Feb
    Mar
    Apr
    May
    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
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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
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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
    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.

    2016

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

    Jan
    Feb
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    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.

    2017

    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.

    2018

    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.

    2019

    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.

    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
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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.

    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
    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.

    2026

    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.

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    LessMore (max 4/day in 2010)

    2011

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2011)

    2012

    Download PNG

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

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    LessMore (max 4/day in 2012)

    2013

    Download PNG

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

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    LessMore (max 29/day in 2013)

    2014

    Download PNG

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

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    LessMore (max 9/day in 2014)

    2015

    Download PNG

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

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    LessMore (max 12/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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    LessMore (max 34/day in 2019)

    2020

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

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    LessMore (max 35/day in 2020)

    2021

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

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    LessMore (max 50/day in 2021)

    2022

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

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    LessMore (max 32/day in 2022)

    2023

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

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    LessMore (max 22/day in 2023)

    2024

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

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    LessMore (max 23/day in 2024)

    2025

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

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    LessMore (max 17/day in 2025)

    2026

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

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    LessMore (max 22/day in 2026)

    23
    +125
    2433
    2022-12-17 17:05Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)433-202308
    2022-04-23 17:05Codeforces Global Round 20491-272328
    2022-04-19 16:35Codeforces Round 783 (Div. 1)224+202355
    2022-02-23 12:10Codeforces Round 773 (Div. 1)203+432335
    2021-10-30 16:35Codeforces Round 752 (Div. 1)507-472292
    2021-09-12 17:05Codeforces Global Round 16208+662339
    2021-08-29 17:05Deltix Round, Summer 2021 (open for everyone, rated, Div. 1 + Div. 2)331+402273