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Melnyk

Open on Codeforces · Unique solved

Rating2238· 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
100
Unique solved
1,565
Submissions (all)
4,096
Years with activity
2013–2018

Solved by problem rating

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

  • Unrated315
  • 800–89981
  • 900–99946
  • 1000–109960
  • 1100–119972
  • 1200–129974
  • 1300–139970

Solved by topic

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

  • implementation523
  • math336
  • greedy324
  • brute force238
  • dp228
  • constructive algorithms189
  • data structures

Rating changes

2013

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2013

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2018-04-17 16:05Tinkoff Internship Warmup Round 2018 and Codeforces Round 475 (Div. 1)81+572238
2018-04-07 18:35Divide by Zero 2018 and Codeforces Round 474 (Div. 1 + Div. 2, combined)179+262181
2018-03-24 17:50VK Cup 2018 - Round 2132-582155
2018-03-10 17:35VK Cup 2018 - Round 122+1102213
2018-03-09 10:40Codeforces Round 469 (Div. 1)
1400–1499
82
  • 1500–159971
  • 1600–1699115
  • 1700–179996
  • 1800–189986
  • 1900–199984
  • 2000–209977
  • 2100–219957
  • 2200–229960
  • 2300–239939
  • 2400–249926
  • 2500–259923
  • 2600–269910
  • 2700–27999
  • 2800–28994
  • 2900–29994
  • 3000–30991
  • 3100–31993
  • 169
  • sortings160
  • dfs and similar137
  • graphs134
  • binary search129
  • number theory93
  • strings92
  • trees76
  • combinatorics64
  • two pointers60
  • dsu44
  • geometry42
  • *special35
  • bitmasks33
  • shortest paths33
  • probabilities29
  • hashing22
  • games14
  • divide and conquer13
  • matrices12
  • flows8
  • expression parsing7
  • Other (8 tags)34
  • 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.

    2014

    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.

    2015

    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.

    2016

    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.

    2017

    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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 15/day in 2013)

    2014

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
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    Jun
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    Sep
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    Dec

    LessMore (max 29/day in 2014)

    2015

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 31/day in 2015)

    2016

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 99/day in 2016)

    2017

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    LessMore (max 38/day in 2017)

    2018

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 61/day in 2018)

    303
    -47
    2103
    2018-02-15 16:35ICM Technex 2018 and Codeforces Round 463 (Div. 1 + Div. 2, combined)351-162150
    2018-02-14 14:05Codeforces Round 462 (Div. 1)225-212166
    2018-01-29 16:35Codeforces Round 459 (Div. 1)165-232187
    2018-01-20 18:35Codecraft-18 and Codeforces Round 458 (Div. 1 + Div. 2, combined)532-732210
    2017-10-26 16:45Codeforces Round 443 (Div. 1)75+492283
    2017-10-16 13:05Codeforces Round 441 (Div. 1, by Moscow Team Olympiad)97+352234
    2017-09-30 20:05MemSQL Start[c]UP 3.0 - Round 2 and Codeforces Round 437 (Div. 1)101+592199