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Sulfox

Open on Codeforces · Unique solved

Rating2526· 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
133
Unique solved
2,007
Submissions (all)
4,319
Years with activity
2018–2026

Solved by problem rating

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

  • Unrated302
  • 800–899182
  • 900–99951
  • 1000–109959
  • 1100–119952
  • 1200–129972
  • 1300–139963

Solved by topic

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

  • greedy681
  • math619
  • implementation439
  • dp426
  • constructive algorithms381
  • data structures357

Rating changes

2018

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-13 16:35Codeforces Round 1093 (Div. 1)467-1492526
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)96+72675
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)87-42668
2026-02-11 17:35Codeforces Round 1079 (Div. 1)288-1232672
2026-01-29 17:35Codeforces Round 1077 (Div. 1)
1400–1499
74
  • 1500–159968
  • 1600–169973
  • 1700–179997
  • 1800–189988
  • 1900–1999103
  • 2000–209977
  • 2100–219977
  • 2200–229972
  • 2300–239972
  • 2400–249981
  • 2500–259967
  • 2600–269965
  • 2700–279935
  • 2800–289951
  • 2900–299933
  • 3000–309927
  • 3100–319920
  • 3200–329922
  • 3300–339915
  • 3400–34994
  • 3500–35995
  • brute force
    310
  • sortings210
  • binary search209
  • graphs190
  • dfs and similar163
  • trees162
  • combinatorics158
  • strings149
  • bitmasks148
  • number theory136
  • two pointers107
  • divide and conquer75
  • dsu73
  • *special63
  • games62
  • interactive58
  • geometry56
  • probabilities46
  • hashing43
  • shortest paths40
  • flows25
  • fft24
  • Other (9 tags)91
  • 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
    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
    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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    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
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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.

    2026

    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
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    Jul
    Aug
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    Dec

    LessMore (max 24/day in 2018)

    2019

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 25/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 54/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 18/day in 2021)

    2022

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 12/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 46/day in 2023)

    2024

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 37/day in 2024)

    2025

    Download PNG

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

    Jan
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    Mar
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    May
    Jun
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    LessMore (max 25/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
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    LessMore (max 19/day in 2026)

    23
    +102
    2795
    2026-01-17 17:35Codeforces Round 1073 (Div. 1)39+962693
    2026-01-07 17:35Hello 2026109+462597
    2025-12-27 17:35Good Bye 2025276-192551
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)330-602570
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)496-1602630
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)27+1092790
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)274-1082681