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Zoli9

Open on Codeforces · Unique solved

Rating2434· 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
95
Unique solved
1,337
Submissions (all)
2,335
Years with activity
2014–2025

Solved by problem rating

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

  • Unrated197
  • 800–899130
  • 900–99954
  • 1000–109962
  • 1100–119954
  • 1200–129978
  • 1300–139969

Solved by topic

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

  • greedy401
  • implementation388
  • math384
  • constructive algorithms231
  • brute force221
  • dp204
  • data structures

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
2021-07-17 17:35Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine))229+32434
2021-01-05 16:35Codeforces Round 694 (Div. 1)54+1432431
2020-12-30 17:35Good Bye 2020359+482288
2020-12-20 17:05Codeforces Round 692 (Div. 1, based on Technocup 2021 Elimination Round 3)437-482240
2020-12-19 11:35Codeforces Round 691 (Div. 1)
1400–1499
62
  • 1500–159980
  • 1600–169981
  • 1700–179969
  • 1800–189972
  • 1900–199957
  • 2000–209939
  • 2100–219954
  • 2200–229957
  • 2300–239933
  • 2400–249933
  • 2500–259925
  • 2600–269910
  • 2700–27998
  • 2800–28993
  • 2900–29994
  • 3000–30992
  • 3100–31993
  • 3200–32991
  • 168
  • sortings154
  • graphs117
  • binary search115
  • dfs and similar107
  • strings103
  • number theory99
  • trees80
  • combinatorics70
  • two pointers64
  • bitmasks55
  • dsu40
  • shortest paths31
  • games31
  • geometry27
  • interactive26
  • divide and conquer21
  • hashing19
  • probabilities18
  • graph matchings13
  • flows9
  • *special8
  • Other (9 tags)31
  • 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
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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
    Feb
    Mar
    Apr
    May
    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.

    2018

    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.

    2019

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

    Jan
    Feb
    Mar
    Apr
    May
    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
    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.

    2021

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

    Jan
    Feb
    Mar
    Apr
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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.

    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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    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.

    2023

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    2024

    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.

    2025

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

    Jan
    Feb
    Mar
    Apr
    May
    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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    Sep
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    Dec

    LessMore (max 6/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2015)

    2016

    Download PNG

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

    Jan
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    LessMore (max 13/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 10/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 15/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 31/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 39/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 6/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 2/day in 2023)

    2024

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 9/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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    LessMore (max 35/day in 2025)

    291
    -13
    2288
    2020-11-15 17:05Codeforces Round 683 (Div. 1, by Meet IT)193+522301
    2020-11-02 16:35Codeforces Round 681 (Div. 1, based on VK Cup 2019-2020 - Final)348-82249
    2020-11-01 13:05Codeforces Round 680 (Div. 1, based on Moscow Team Olympiad)176+802257
    2020-09-30 17:20Grakn Forces 2020666-42177
    2020-09-27 17:05Codeforces Round 673 (Div. 1)815-962181
    2020-09-06 16:35Codeforces Round 668 (Div. 1)461-322277
    2020-08-30 16:35Codeforces Round 666 (Div. 1)264+332309