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vlad107

Open on Codeforces · Unique solved

Rating2454· 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
114
Unique solved
2,057
Submissions (all)
5,185
Years with activity
2010–2025

Solved by problem rating

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

  • Unrated420
  • 800–899106
  • 900–99950
  • 1000–109966
  • 1100–119980
  • 1200–129978
  • 1300–139997

Solved by topic

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

  • implementation568
  • math368
  • greedy354
  • dp312
  • brute force268
  • constructive algorithms186
  • data structures

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
2018-03-10 17:35VK Cup 2018 - Round 1118-512454
2017-03-18 17:35VK Cup 2017 - Round 1148-942505
2016-05-07 18:05Codeforces Round 351 (VK Cup 2016 Round 3, Div. 1 Edition)39-222599
2016-04-29 18:35Codeforces Round 349 (Div. 1)54-422621
2016-04-24 18:35Codeforces Round 348 (VK Cup 2016 Round 2, Div. 1 Edition)
1400–1499
103
  • 1500–1599118
  • 1600–1699108
  • 1700–1799117
  • 1800–1899108
  • 1900–1999115
  • 2000–2099121
  • 2100–219992
  • 2200–229968
  • 2300–239956
  • 2400–249959
  • 2500–259935
  • 2600–269931
  • 2700–279914
  • 2800–28999
  • 2900–29994
  • 3000–30991
  • 3100–31991
  • 182
  • sortings151
  • binary search143
  • graphs142
  • dfs and similar135
  • strings126
  • number theory104
  • combinatorics91
  • *special90
  • two pointers69
  • geometry68
  • trees64
  • dsu53
  • shortest paths47
  • bitmasks43
  • probabilities43
  • games37
  • hashing27
  • divide and conquer23
  • expression parsing18
  • graph matchings12
  • string suffix structures11
  • Other (8 tags)42
  • 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.

    2011

    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.

    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
    May
    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.

    2014

    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.

    2015

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

    Jan
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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
    Mar
    Apr
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    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.

    2017

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

    Jan
    Feb
    Mar
    Apr
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    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.

    2018

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

    Jan
    Feb
    Mar
    Apr
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    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.

    2019

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

    Jan
    Feb
    Mar
    Apr
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    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.

    2020

    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
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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.

    2023

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

    Jan
    Feb
    Mar
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    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.

    2024

    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.

    2025

    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.

    May
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    Sep
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    Dec

    LessMore (max 34/day in 2010)

    2011

    Download PNG

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

    Jan
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    LessMore (max 50/day in 2011)

    2012

    Download PNG

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

    Jan
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    LessMore (max 53/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 58/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 51/day in 2014)

    2015

    Download PNG

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

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    LessMore (max 22/day in 2015)

    2016

    Download PNG

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

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    LessMore (max 31/day in 2016)

    2017

    Download PNG

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

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    LessMore (max 5/day in 2017)

    2018

    Download PNG

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

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    LessMore (max 29/day in 2018)

    2019

    Download PNG

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

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    LessMore (max 1/day in 2019)

    2020

    Download PNG

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

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    LessMore (max 16/day in 2020)

    2022

    Download PNG

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

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    LessMore (max 43/day in 2022)

    2023

    Download PNG

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

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    LessMore (max 8/day in 2023)

    2024

    Download PNG

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

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    LessMore (max 6/day in 2024)

    2025

    Download PNG

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

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    LessMore (max 17/day in 2025)

    12
    +76
    2663
    2016-03-07 11:25Codeforces Round 345 (Div. 1)52-32587
    2016-02-28 20:108VC Venture Cup 2016 - Final Round38+222590
    2016-02-13 20:058VC Venture Cup 2016 - Elimination Round77-22568
    2016-02-04 19:05AIM Tech Round (Div. 1)10+1712570
    2016-01-29 19:10Wunder Fund Round 2016 (Div. 1 + Div. 2 combined)194-352399
    2015-12-23 18:35Codeforces Round 336 (Div. 1)100-252434
    2015-12-09 18:05Codeforces Round 335 (Div. 1)46+212459