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BossBobster

Open on Codeforces · Unique solved

Rating2246· 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
73
Unique solved
390
Submissions (all)
939
Years with activity
2019–2024

Solved by problem rating

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

  • Unrated7
  • 800–89990
  • 900–99924
  • 1000–109924
  • 1100–119928
  • 1200–129923
  • 1300–139925

Solved by topic

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

  • greedy187
  • math178
  • constructive algorithms103
  • brute force97
  • implementation88
  • dp73
  • data structures

Rating changes

2019

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2019

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-04-06 17:35Codeforces Global Round 25285+742246
2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)860-302172
2023-06-04 16:45Codeforces Round 877 (Div. 2)21+1382202
2023-06-03 16:35Codeforces Round 876 (Div. 2)84+802064
2023-05-28 17:05Codeforces Round 875 (Div. 1)475
1400–1499
27
  • 1500–159920
  • 1600–169923
  • 1700–179922
  • 1800–189912
  • 1900–199915
  • 2000–209920
  • 2100–21999
  • 2200–22995
  • 2300–23992
  • 2400–24993
  • 2500–25993
  • 2600–26992
  • 2900–29991
  • 3000–30993
  • 3300–33992
  • 60
  • sortings56
  • number theory43
  • binary search42
  • strings34
  • graphs30
  • bitmasks30
  • combinatorics23
  • two pointers23
  • dfs and similar22
  • trees16
  • dsu14
  • geometry12
  • games10
  • shortest paths8
  • hashing8
  • *special8
  • interactive8
  • divide and conquer7
  • ternary search4
  • matrices3
  • probabilities2
  • Other (3 tags)5
  • 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
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    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.

    2021

    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.

    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
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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.

    2024

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    May
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    Dec

    LessMore (max 3/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 7/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 21/day in 2022)

    2023

    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 2023)

    2024

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
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    LessMore (max 20/day in 2024)

    +19
    1984
    2023-03-04 19:35Codeforces Round 856 (Div. 2)549-471965
    2023-02-16 16:35Educational Codeforces Round 143 (Rated for Div. 2)137+642012
    2023-01-21 16:35Codeforces Round 845 (Div. 2) and ByteRace 2023203+531948
    2022-12-30 17:05Good Bye 2022: 2023 is NEAR1640+51895
    2022-12-27 16:35Codeforces Round 841 (Div. 2) and Divide by Zero 2022429+321890
    2022-12-19 16:35Codeforces Round 840 (Div. 2) and Enigma 2022 - Cybros LNMIIT4133-1641858
    2022-12-11 17:35Codeforces Round 837 (Div. 2)743-562022