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Top rated · Stats

cy1999

Open on Codeforces · Unique solved

Rating2189· 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
115
Unique solved
1,455
Submissions (all)
7,126
Years with activity
2016–2026

Solved by problem rating

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

  • Unrated396
  • 800–899116
  • 900–99951
  • 1000–109956
  • 1100–119934
  • 1200–129965
  • 1300–139960

Solved by topic

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

  • math373
  • greedy351
  • implementation309
  • dp286
  • brute force204
  • constructive algorithms184
  • data structures

Rating changes

2016

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2016

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-11-25 17:20CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!)345+542189
2023-10-28 17:05Codeforces Round 906 (Div. 1)440+32135
2022-03-06 12:10Codeforces Round 775 (Div. 1, based on Moscow Open Olympiad in Informatics)382+182132
2021-09-12 17:05Codeforces Global Round 16772-42114
2021-08-29 17:05Deltix Round, Summer 2021 (open for everyone, rated, Div. 1 + Div. 2)
1400–1499
49
  • 1500–159954
  • 1600–169957
  • 1700–179958
  • 1800–189969
  • 1900–199959
  • 2000–209955
  • 2100–219941
  • 2200–229946
  • 2300–239932
  • 2400–249934
  • 2500–259926
  • 2600–269918
  • 2700–27995
  • 2800–28994
  • 2900–29995
  • 3000–309928
  • 3100–319913
  • 3200–329913
  • 3300–33997
  • 3400–34992
  • 3500–35992
  • 155
  • sortings131
  • number theory112
  • binary search109
  • graphs94
  • dfs and similar87
  • strings86
  • combinatorics81
  • bitmasks79
  • trees70
  • two pointers68
  • shortest paths33
  • divide and conquer32
  • geometry29
  • dsu28
  • *special28
  • hashing23
  • probabilities20
  • games16
  • fft16
  • interactive15
  • matrices14
  • Other (9 tags)37
  • 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
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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
    Mar
    Apr
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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.

    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
    Mar
    Apr
    May
    Jun
    Jul
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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
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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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
    Feb
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    Jun
    Jul
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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
    Mar
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    Jun
    Jul
    Aug
    Sep
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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
    Feb
    Mar
    Apr
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    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.

    2026

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    Aug
    Sep
    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.

    May
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    LessMore (max 4/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 18/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 39/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 47/day in 2019)

    2020

    Download PNG

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

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    2021

    Download PNG

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

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    2022

    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 151/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 235/day in 2024)

    2025

    Download PNG

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

    Jan
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    LessMore (max 20/day in 2025)

    2026

    Download PNG

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

    Jan
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    LessMore (max 12/day in 2026)

    671
    +13
    2118
    2021-08-24 17:05Codeforces Round 740 (Div. 1, based on VK Cup 2021 - Final (Engine))587-302105
    2020-04-26 16:35Educational Codeforces Round 86 (Rated for Div. 2)187+592135
    2020-04-15 17:05Codeforces Round 635 (Div. 1)900-412076
    2020-04-03 16:35Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov!833-452117
    2020-03-07 11:35Codeforces Round 626 (Div. 1, based on Moscow Open Olympiad in Informatics)359-52162
    2020-03-01 15:15Codeforces Round 625 (Div. 1, based on Technocup 2020 Final Round)391+12167
    2020-02-23 18:35Codeforces Round 623 (Div. 1, based on VK Cup 2019-2020 - Elimination Round, Engine)179+412166