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Pankin

Open on Codeforces · Unique solved

Rating2150· 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
57
Unique solved
1,099
Submissions (all)
3,363
Years with activity
2017–2023

Solved by problem rating

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

  • Unrated325
  • 800–89948
  • 900–99920
  • 1000–109941
  • 1100–119930
  • 1200–129934
  • 1300–139933

Solved by topic

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

  • greedy229
  • math220
  • implementation217
  • data structures172
  • dp167
  • constructive algorithms121

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
2020-04-03 16:35Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov!610-92150
2020-03-03 16:50Ozon Tech Challenge 2020 (Div.1 + Div.2, Rated, T-shirts + prizes!)764-252159
2020-03-01 13:10Технокубок 2020 - Финал65+122184
2019-12-15 11:15Codeforces Round 608 (Div. 2)23+1242172
2019-11-27 15:50Educational Codeforces Round 77 (Rated for Div. 2)
1400–1499
31
  • 1500–159934
  • 1600–169937
  • 1700–179943
  • 1800–189948
  • 1900–199955
  • 2000–209948
  • 2100–219956
  • 2200–229949
  • 2300–239936
  • 2400–249950
  • 2500–259923
  • 2600–269916
  • 2700–279915
  • 2800–289912
  • 2900–29997
  • 3000–30995
  • 3100–31991
  • 3200–32991
  • 3400–34991
  • brute force
    116
  • graphs109
  • trees92
  • dfs and similar92
  • sortings84
  • binary search82
  • number theory70
  • strings67
  • bitmasks59
  • combinatorics47
  • dsu42
  • two pointers39
  • divide and conquer33
  • shortest paths29
  • hashing23
  • geometry20
  • string suffix structures17
  • interactive14
  • flows10
  • games9
  • probabilities8
  • *special8
  • Other (7 tags)28
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 8/day in 2017)

    2018

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 24/day in 2018)

    2019

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 55/day in 2019)

    2020

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 40/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 21/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 19/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Nov
    Dec

    LessMore (max 6/day in 2023)

    328
    -8
    2048
    2019-11-01 16:35Codeforces Round 597 (Div. 2)416-202056
    2019-10-26 13:05Codeforces Round 596 (Div. 1, based on Technocup 2020 Elimination Round 2)473-642076
    2019-10-20 11:05Codeforces Round 594 (Div. 1)210+332140
    2019-09-04 11:35Codeforces Round 583 (Div. 1 + Div. 2, based on Olympiad of Metropolises)187+792107
    2019-08-07 16:35Educational Codeforces Round 70 (Rated for Div. 2)157+422028
    2019-08-04 18:35Codeforces Round 577 (Div. 2)257+181986
    2019-07-17 16:35Codeforces Round 574 (Div. 2)295+281968