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Top rated · Stats

czsnb

Open on Codeforces · Unique solved

Rating2201· 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
104
Unique solved
732
Submissions (all)
1,767
Years with activity
2017–2025

Solved by problem rating

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

  • Unrated163
  • 800–89991
  • 900–99935
  • 1000–109940
  • 1100–119925
  • 1200–129936
  • 1300–139937

Solved by topic

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

  • greedy209
  • math205
  • implementation192
  • constructive algorithms132
  • brute force121
  • dp120
  • data structures

Rating changes

2017

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2017

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2021-12-16 15:35Codeforces Round 761 (Div. 2)18+1362201
2021-12-11 12:05Codeforces Round 758 (Div.1 + Div. 2)443+322065
2021-12-01 16:35Educational Codeforces Round 118 (Rated for Div. 2)323+72033
2021-11-28 17:05Deltix Round, Autumn 2021 (open for everyone, rated, Div. 1 + Div. 2)947-242026
2021-11-26 13:15Codeforces Round 757 (Div. 2)
1400–1499
38
  • 1500–159938
  • 1600–169938
  • 1700–179930
  • 1800–189924
  • 1900–199931
  • 2000–209926
  • 2100–219920
  • 2200–229925
  • 2300–239911
  • 2400–249914
  • 2500–25994
  • 2600–26993
  • 2700–27992
  • 2800–28991
  • 80
  • sortings73
  • binary search63
  • number theory59
  • strings52
  • graphs43
  • bitmasks43
  • dfs and similar29
  • trees28
  • two pointers28
  • combinatorics24
  • geometry18
  • interactive17
  • dsu16
  • *special15
  • shortest paths13
  • hashing10
  • divide and conquer10
  • games9
  • ternary search4
  • flows4
  • probabilities3
  • Other (9 tags)12
  • 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.

    2020

    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.

    2021

    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.

    2022

    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.

    2023

    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.

    2024

    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.

    2025

    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
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    Dec

    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 28/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 30/day in 2019)

    2020

    Download PNG

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

    Jan
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    2021

    Download PNG

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

    Jan
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    LessMore (max 32/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 20/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 16/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 6/day in 2024)

    2025

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 2/day in 2025)

    192
    +31
    2050
    2021-11-23 17:35Codeforces Global Round 17512+582019
    2021-11-14 08:20Codeforces Round 755 (Div. 1, based on Technocup 2022 Elimination Round 2)353+561961
    2021-11-12 16:35Codeforces Round 754 (Div. 2)142+1171905
    2021-10-30 16:35Codeforces Round 752 (Div. 2)2642-1061788
    2021-10-29 16:35Educational Codeforces Round 116 (Rated for Div. 2)478+331894
    2021-09-30 12:15Codeforces Round 745 (Div. 1)515-841861
    2021-09-12 17:05Codeforces Global Round 161627-461945