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WZYYN

Open on Codeforces · Unique solved

Rating3180· Legendary 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
12
Unique solved
3,198
Submissions (all)
6,144
Years with activity
2017–2026

Solved by problem rating

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

  • Unrated967
  • 800–899166
  • 900–99949
  • 1000–109947
  • 1100–119955
  • 1200–129962
  • 1300–1399

Solved by topic

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

  • math731
  • greedy723
  • dp618
  • data structures514
  • constructive algorithms488
  • implementation406

Rating changes

2017

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

2017

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2020-03-19 17:05Codeforces Global Round 77+733180
2020-03-01 15:15Codeforces Round 625 (Div. 1, based on Technocup 2020 Final Round)11+263107
2020-02-02 16:35Codeforces Round 616 (Div. 1)5+963081
2020-01-19 15:35Codeforces Round 614 (Div. 1)18+92985
2020-01-04 14:35Hello 202023
55
  • 1400–149954
  • 1500–159966
  • 1600–169968
  • 1700–179972
  • 1800–189969
  • 1900–199964
  • 2000–209967
  • 2100–219973
  • 2200–229976
  • 2300–239975
  • 2400–249999
  • 2500–2599120
  • 2600–2699114
  • 2700–2799111
  • 2800–2899107
  • 2900–2999124
  • 3000–3099106
  • 3100–319992
  • 3200–329980
  • 3300–339968
  • 3400–349937
  • 3500–359955
  • brute force
    370
  • graphs337
  • binary search266
  • trees263
  • sortings243
  • dfs and similar233
  • combinatorics215
  • number theory194
  • bitmasks176
  • two pointers154
  • strings131
  • divide and conquer105
  • interactive100
  • geometry88
  • dsu87
  • probabilities80
  • shortest paths69
  • games61
  • flows58
  • hashing54
  • fft50
  • matrices43
  • Other (10 tags)146
  • Jun
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    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
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    Jun
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    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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    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
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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.

    2021

    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.

    2022

    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.

    2024

    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.

    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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    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 15/day in 2017)

    2018

    Download PNG

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

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    LessMore (max 7/day in 2018)

    2019

    Download PNG

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

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    2020

    Download PNG

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

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    LessMore (max 61/day in 2020)

    2021

    Download PNG

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

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    LessMore (max 33/day in 2021)

    2022

    Download PNG

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

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    LessMore (max 27/day in 2022)

    2024

    Download PNG

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

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    LessMore (max 6/day in 2024)

    2025

    Download PNG

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

    Jan
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    LessMore (max 62/day in 2025)

    2026

    Download PNG

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

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    LessMore (max 26/day in 2026)

    +27
    2976
    2019-12-29 17:05Good Bye 20198+1172949
    2019-12-14 13:05Codeforces Round 606 (Div. 1, based on Technocup 2020 Elimination Round 4)11+862832
    2019-11-24 10:05Codeforces Round 602 (Div. 1, based on Technocup 2020 Elimination Round 3)3+2412746
    2019-10-26 13:05Codeforces Round 596 (Div. 1, based on Technocup 2020 Elimination Round 2)10+2112505
    2019-09-15 12:35Codeforces Round 585 (Div. 2)1+2792294
    2018-01-05 16:35Codeforces Round 456 (Div. 2)12+1732015
    2017-12-28 16:05Educational Codeforces Round 35 (Rated for Div. 2)3+18421842