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Petroleumus

Open on Codeforces · Unique solved

Rating2321· International 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
68
Unique solved
369
Submissions (all)
1,152
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated5
  • 800–89985
  • 900–99917
  • 1000–109923
  • 1100–119918
  • 1200–129920
  • 1300–139917

Solved by topic

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

  • greedy202
  • math156
  • constructive algorithms119
  • implementation88
  • dp72
  • brute force70
  • data structures

Rating changes

2022

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

2022

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)320+142321
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)123+862307
2026-02-23 17:05Codeforces Round 1082 (Div. 1)355-92221
2026-02-11 17:35Codeforces Round 1079 (Div. 1)168+932230
2026-01-07 17:35Hello 20261052
1400–1499
18
  • 1500–159910
  • 1600–169927
  • 1700–179933
  • 1800–189921
  • 1900–199921
  • 2000–209917
  • 2100–219910
  • 2200–22994
  • 2300–23996
  • 2400–24996
  • 2500–25997
  • 2600–26992
  • 2900–29992
  • 65
  • sortings47
  • binary search42
  • combinatorics32
  • strings31
  • dfs and similar30
  • two pointers28
  • games27
  • number theory26
  • graphs24
  • trees22
  • bitmasks21
  • dsu15
  • interactive14
  • divide and conquer10
  • shortest paths8
  • probabilities8
  • geometry8
  • hashing6
  • matrices3
  • flows2
  • ternary search2
  • Other (5 tags)6
  • 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
    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.

    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.

    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
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 28/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 20/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 38/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 27/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 20/day in 2026)

    -35
    2137
    2025-12-27 17:35Good Bye 2025641+202172
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)524+312152
    2025-12-06 10:15Codeforces Round 1069 (Div. 1)535-612121
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)738-382182
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)419+362220
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)393+82184
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)466+362176