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ButterflyDew

Open on Codeforces · Unique solved

Rating2234· 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
111
Unique solved
976
Submissions (all)
2,167
Years with activity
2018–2025

Solved by problem rating

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

  • Unrated142
  • 800–899122
  • 900–99929
  • 1000–109934
  • 1100–119943
  • 1200–129941
  • 1300–139939

Solved by topic

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

  • greedy411
  • math340
  • implementation241
  • constructive algorithms238
  • brute force215
  • dp214
  • data structures

Rating changes

2018

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

2018

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-05-17 16:50Codeforces Round 1025 (Div. 2)12+1582234
2025-04-28 16:35Educational Codeforces Round 178 (Rated for Div. 2)165+412076
2025-04-26 11:35Codeforces Round 1021 (Div. 1)369+192035
2025-04-21 16:35Codeforces Round 1019 (Div. 2)622-322016
2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)
1400–1499
40
  • 1500–159927
  • 1600–169952
  • 1700–179950
  • 1800–189937
  • 1900–199946
  • 2000–209937
  • 2100–219932
  • 2200–229938
  • 2300–239934
  • 2400–249940
  • 2500–259938
  • 2600–269917
  • 2700–279914
  • 2800–28999
  • 2900–29998
  • 3000–30994
  • 3100–31993
  • 178
  • sortings131
  • binary search123
  • graphs106
  • dfs and similar98
  • number theory85
  • trees80
  • combinatorics76
  • bitmasks75
  • two pointers66
  • strings64
  • dsu48
  • games35
  • interactive30
  • hashing27
  • divide and conquer23
  • geometry23
  • probabilities21
  • shortest paths21
  • matrices8
  • fft7
  • ternary search7
  • Other (7 tags)31
  • 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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    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.

    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
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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
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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
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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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    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
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    Jun
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    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.

    May
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    LessMore (max 40/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 61/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 16/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 12/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 19/day in 2024)

    2025

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2025)

    1497
    -51
    2048
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)1895-1092099
    2025-03-23 08:05Codeforces Round 1012 (Div. 1)289-22208
    2024-12-20 16:35Codeforces Round 994 (Div. 2)36+1112210
    2024-12-19 17:35Codeforces Global Round 281117-402099
    2024-09-29 17:35Codeforces Round 976 (Div. 2) and Divide By Zero 9.0123+562139
    2024-09-27 16:05Codeforces Round 975 (Div. 1)1008-922083
    2024-08-30 17:05Codeforces Round 969 (Div. 1)585-342175