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Dragos

Open on Codeforces · Unique solved

Rating2429· 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
985
Submissions (all)
3,192
Years with activity
2011–2026

Solved by problem rating

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

  • Unrated276
  • 800–89954
  • 900–99910
  • 1000–109918
  • 1100–119919
  • 1200–129917
  • 1300–139916

Solved by topic

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

  • math235
  • greedy229
  • implementation206
  • dp197
  • data structures192
  • brute force167
  • constructive algorithms

Rating changes

2011

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2011

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-01-04 17:05Hello 2025253+382429
2024-12-28 17:35Good Bye 2024: 2025 is NEAR430-42391
2024-12-19 17:35Codeforces Global Round 28279+192395
2023-10-28 17:05Codeforces Round 906 (Div. 1)110+1022376
2017-05-04 16:50Codeforces Round 411 (Div. 1)33+183
1400–1499
25
  • 1500–159919
  • 1600–169925
  • 1700–179936
  • 1800–189923
  • 1900–199940
  • 2000–209943
  • 2100–219959
  • 2200–229955
  • 2300–239955
  • 2400–249970
  • 2500–259973
  • 2600–269931
  • 2700–279911
  • 2800–28994
  • 2900–29993
  • 3000–30992
  • 3100–31991
  • 135
  • dfs and similar121
  • graphs107
  • sortings98
  • binary search84
  • trees84
  • number theory72
  • combinatorics71
  • bitmasks66
  • strings57
  • dsu48
  • two pointers46
  • divide and conquer37
  • shortest paths30
  • games25
  • probabilities25
  • interactive21
  • hashing21
  • geometry14
  • *special12
  • matrices8
  • flows8
  • Other (9 tags)37
  • 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.

    2012

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    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.

    2013

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    Aug
    Sep
    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.

    2014

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

    Jan
    Feb
    Mar
    Apr
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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.

    2015

    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.

    2016

    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.

    2017

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

    Jan
    Feb
    Mar
    Apr
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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.

    2019

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

    Jan
    Feb
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    Apr
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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
    Mar
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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.

    2021

    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.

    2022

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

    Jan
    Feb
    Mar
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    Jun
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    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.

    2023

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

    Jan
    Feb
    Mar
    Apr
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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.

    2024

    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.

    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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    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
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    Dec

    LessMore (max 15/day in 2011)

    2012

    Download PNG

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

    Jan
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    LessMore (max 44/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 38/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 44/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 60/day in 2015)

    2016

    Download PNG

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

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    LessMore (max 26/day in 2016)

    2017

    Download PNG

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

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    LessMore (max 25/day in 2017)

    2019

    Download PNG

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

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    LessMore (max 17/day in 2019)

    2020

    Download PNG

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

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    LessMore (max 10/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 5/day in 2021)

    2022

    Download PNG

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

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    LessMore (max 10/day in 2022)

    2023

    Download PNG

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

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    LessMore (max 61/day in 2023)

    2024

    Download PNG

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

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    LessMore (max 49/day in 2024)

    2025

    Download PNG

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

    Jan
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    LessMore (max 12/day in 2025)

    2026

    Download PNG

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

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    LessMore (max 1/day in 2026)

    2274
    2017-02-14 11:05Codeforces Round 397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined)125+1072091
    2016-08-24 18:35AIM Tech Round 3 (Div. 1)365-141984
    2015-09-16 17:45Codeforces Round 320 (Div. 1) [Bayan Thanks-Round]354+181998
    2015-09-10 18:40Codeforces Round 319 (Div. 1)345+261980
    2015-06-06 15:30Looksery Cup 20151085-791954
    2015-04-04 19:05ZeptoLab Code Rush 2015367+1222033
    2015-03-17 18:45Codeforces Round 296 (Div. 1)474-541911