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qoo2p5

Open on Codeforces · Unique solved

Rating2466· 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
67
Unique solved
1,025
Submissions (all)
2,763
Years with activity
2013–2026

Solved by problem rating

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

  • Unrated496
  • 800–89922
  • 900–99914
  • 1000–109929
  • 1100–119911
  • 1200–129923
  • 1300–139927

Solved by topic

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

  • implementation154
  • math131
  • dp120
  • greedy118
  • constructive algorithms97
  • data structures93

Rating changes

2013

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

Jan
Feb
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May

Submission volume

Download all years PNG

2013

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2019-08-25 16:40Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2)93+402466
2019-02-16 19:05Codeforces Round 539 (Div. 1)409-1542426
2019-01-22 16:35Codeforces Round 534 (Div. 1)6+2292580
2019-01-05 19:05Codeforces Round 530 (Div. 1)159-92351
2019-01-04 17:45Hello 2019553
1400–1499
30
  • 1500–159932
  • 1600–169945
  • 1700–179930
  • 1800–189938
  • 1900–199934
  • 2000–209924
  • 2100–219931
  • 2200–229934
  • 2300–239923
  • 2400–249922
  • 2500–259921
  • 2600–269911
  • 2700–27999
  • 2800–28996
  • 2900–29995
  • 3000–30996
  • 3100–31991
  • 3200–32991
  • binary search
    74
  • brute force74
  • dfs and similar63
  • graphs60
  • trees52
  • sortings49
  • strings48
  • number theory37
  • combinatorics28
  • two pointers22
  • bitmasks21
  • geometry19
  • dsu16
  • *special15
  • shortest paths14
  • divide and conquer14
  • interactive13
  • probabilities13
  • matrices13
  • hashing11
  • games8
  • meet-in-the-middle5
  • Other (7 tags)13
  • Jun
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    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
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    Oct
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    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
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    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
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    Apr
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    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
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    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
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    Jun
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    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
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    Jun
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    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
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    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.

    2025

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

    Jan
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    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.

    2026

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

    Jan
    Feb
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    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.

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    LessMore (max 5/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 1/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 16/day in 2015)

    2016

    Download PNG

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

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    LessMore (max 38/day in 2016)

    2017

    Download PNG

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

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    LessMore (max 50/day in 2017)

    2018

    Download PNG

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

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    LessMore (max 72/day in 2018)

    2019

    Download PNG

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

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    2023

    Download PNG

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

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    LessMore (max 4/day in 2023)

    2025

    Download PNG

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

    Jan
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    LessMore (max 32/day in 2025)

    2026

    Download PNG

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

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    LessMore (max 21/day in 2026)

    -76
    2360
    2018-11-25 19:05Mail.Ru Cup 2018 Round 368+482436
    2018-10-28 17:35Codeforces Round 519 by Botan Investments71+862388
    2018-10-18 19:05Mail.Ru Cup 2018 Round 1955-1702302
    2018-10-07 19:05Lyft Level 5 Challenge 2018 - Elimination Round141-202472
    2018-09-02 16:35Manthan, Codefest 18 (rated, Div. 1 + Div. 2)86+62492
    2018-08-11 15:35Codeforces Round 503 (by SIS, Div. 1)19+1352486
    2018-07-26 17:05Codeforces Round 499 (Div. 1)286-812351