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UsedToBe

Open on Codeforces · Unique solved

Rating2507· 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
10
Unique solved
139
Submissions (all)
330
Years with activity
2014–2019

Solved by problem rating

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

  • Unrated7
  • 800–8997
  • 1000–10998
  • 1100–11994
  • 1200–12994
  • 1300–139911
  • 1400–14993

Solved by topic

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

  • math43
  • dp38
  • implementation37
  • greedy35
  • data structures20
  • constructive algorithms20
  • 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
2016-12-30 16:45Good Bye 201635+1172507
2016-10-08 15:15Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined)110+92390
2016-10-01 16:05Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined)69+722381
2014-12-30 17:30Good Bye 2014141+442309
2014-10-12 16:00Codeforces Round 272 (Div. 1)
1500–1599
6
  • 1600–169912
  • 1700–17995
  • 1800–18997
  • 1900–199910
  • 2000–20998
  • 2100–21994
  • 2200–22994
  • 2300–23997
  • 2400–24995
  • 2500–25995
  • 2600–26999
  • 2700–27991
  • 2800–28995
  • 2900–29995
  • 3100–31992
  • 18
  • dfs and similar18
  • combinatorics12
  • graphs12
  • trees12
  • number theory11
  • binary search11
  • bitmasks10
  • sortings9
  • dsu9
  • divide and conquer6
  • strings4
  • geometry4
  • two pointers4
  • probabilities4
  • meet-in-the-middle2
  • matrices2
  • fft2
  • flows2
  • hashing2
  • games2
  • shortest paths2
  • Other (4 tags)5
  • 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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 18/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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    LessMore (max 6/day in 2015)

    2016

    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 17/day in 2016)

    2017

    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 13/day in 2017)

    2018

    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 5/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
    Nov
    Dec

    LessMore (max 14/day in 2019)

    56
    +116
    2265
    2014-10-05 16:00Bayan 2015 Contest Warm Up85+1862149
    2014-09-20 15:00Codeforces Round 268 (Div. 1)114+1881963
    2014-08-15 17:30Codeforces Round 261 (Div. 2)13+1931775
    2014-04-22 14:15Coder-Strike 2014 - Finals (online edition, Div. 2)110+1181582
    2014-04-13 10:00Codeforces Round 241 (Div. 2)641+14641464