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Top rated · Stats

hellman_

Open on Codeforces · Unique solved

Rating2234· 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
40
Unique solved
574
Submissions (all)
1,875
Years with activity
2014–2020

Solved by problem rating

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

  • Unrated41
  • 800–89947
  • 900–99916
  • 1000–109927
  • 1100–119934
  • 1200–129926
  • 1300–139933

Solved by topic

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

  • implementation211
  • math154
  • greedy109
  • dp93
  • constructive algorithms91
  • *special81
  • brute force

Rating changes

2014

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2014

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2017-03-18 17:35VK Cup 2017 - Round 1110+222234
2017-01-12 18:35Codecraft-17 and Codeforces Round 391 (Div. 1 + Div. 2, combined)66+1362212
2016-12-30 16:45Good Bye 2016376+512076
2016-12-06 16:35Codeforces Round 383 (Div. 1)396-592025
2016-11-27 18:35Codeforces Round 382 (Div. 1)448
1400–1499
35
  • 1500–159936
  • 1600–169952
  • 1700–179948
  • 1800–189920
  • 1900–199938
  • 2000–209934
  • 2100–219913
  • 2200–229925
  • 2300–239918
  • 2400–249915
  • 2500–25998
  • 2600–26994
  • 2700–27992
  • 2800–28991
  • 3200–32991
  • 78
  • data structures74
  • sortings55
  • strings53
  • dfs and similar50
  • graphs40
  • binary search39
  • number theory33
  • combinatorics29
  • trees22
  • geometry19
  • bitmasks16
  • dsu15
  • two pointers15
  • hashing15
  • probabilities11
  • shortest paths9
  • matrices7
  • string suffix structures7
  • games6
  • divide and conquer5
  • meet-in-the-middle4
  • Other (6 tags)10
  • 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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 22/day in 2014)

    2015

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 44/day in 2015)

    2016

    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 39/day in 2016)

    2017

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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    Dec

    LessMore (max 17/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
    Nov
    Dec

    LessMore (max 36/day in 2018)

    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 41/day in 2020)

    -84
    2084
    2016-11-23 18:35Codeforces Round 381 (Div. 1)228-202168
    2016-10-22 17:35Canada Cup 2016239+142188
    2016-09-13 18:35Codeforces Round 371 (Div. 1)172+222174
    2016-08-24 18:35AIM Tech Round 3 (Div. 1)161+472152
    2016-07-14 18:50Codeforces Round 362 (Div. 1)128+692105
    2016-06-29 19:05Codeforces Round 360 (Div. 1)457-852036
    2016-06-23 18:35Codeforces Round 359 (Div. 1)128+542121