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Top rated · Stats

Volkov_Ivan

Open on Codeforces · Unique solved

Rating2477· 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
90
Unique solved
931
Submissions (all)
2,262
Years with activity
2017–2024

Solved by problem rating

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

  • Unrated281
  • 800–89952
  • 900–99921
  • 1000–109927
  • 1100–119926
  • 1200–129937
  • 1300–139933

Solved by topic

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

  • greedy245
  • implementation211
  • math204
  • constructive algorithms141
  • brute force123
  • dp117
  • data structures

Rating changes

2017

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2017

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-03-06 12:10Codeforces Round 775 (Div. 1, based on Moscow Open Olympiad in Informatics)144+202477
2021-12-29 17:35Good Bye 2021: 2022 is NEAR251+192457
2021-12-24 17:05Codeforces Global Round 18208+252438
2021-11-28 17:05Deltix Round, Autumn 2021 (open for everyone, rated, Div. 1 + Div. 2)200+352413
2021-10-30 16:35Codeforces Round 752 (Div. 1)
1400–1499
32
  • 1500–159944
  • 1600–169957
  • 1700–179952
  • 1800–189942
  • 1900–199943
  • 2000–209929
  • 2100–219930
  • 2200–229927
  • 2300–239923
  • 2400–249919
  • 2500–259915
  • 2600–269920
  • 2700–279910
  • 2800–28997
  • 2900–29991
  • 3000–30991
  • 3300–33991
  • 3500–35991
  • 104
  • sortings81
  • graphs79
  • binary search68
  • dfs and similar66
  • number theory57
  • trees49
  • two pointers47
  • bitmasks46
  • strings44
  • combinatorics42
  • dsu26
  • geometry25
  • shortest paths20
  • divide and conquer19
  • interactive18
  • *special15
  • hashing10
  • graph matchings7
  • games7
  • probabilities7
  • ternary search6
  • Other (9 tags)22
  • 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.

    2018

    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.

    2019

    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.

    2020

    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.

    2021

    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.

    2022

    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.

    2023

    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.

    2024

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 14/day in 2017)

    2018

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    Aug
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    LessMore (max 40/day in 2018)

    2019

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
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    LessMore (max 23/day in 2019)

    2020

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
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    LessMore (max 61/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
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    Sep
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    LessMore (max 15/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    Jun
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    LessMore (max 36/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    Jun
    Jul
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    LessMore (max 28/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 43/day in 2024)

    258
    +12
    2378
    2021-10-17 13:20Codeforces Round 749 (Div. 1 + Div. 2, based on Technocup 2022 Elimination Round 1)751-992366
    2021-08-01 17:00Codeforces Round 736 (Div. 1)258-122465
    2021-07-11 16:35Codeforces Round 732 (Div. 1)357-692477
    2021-06-13 18:35Codeforces LATOKEN Round 1 (Div. 1 + Div. 2)129+292546
    2021-05-24 16:50Codeforces Round 722 (Div. 1)165+52517
    2021-05-02 17:35Codeforces Global Round 14318-352512
    2021-04-23 17:20Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2)150+272547