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Sin_Watt

Open on Codeforces · Unique solved

Rating2274· 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
21
Unique solved
787
Submissions (all)
2,329
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated15
  • 800–89994
  • 900–99918
  • 1000–109919
  • 1100–119930
  • 1200–129930
  • 1300–139929

Solved by topic

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

  • greedy321
  • math307
  • dp234
  • constructive algorithms189
  • data structures187
  • implementation154

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)401+22274
2025-09-24 14:50Codeforces Round 1053 (Div. 1)160+1132272
2025-04-26 11:35Codeforces Round 1021 (Div. 1)276+242159
2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)413+712135
2025-01-22 14:05Codeforces Round 1000 (Div. 2)
1400–1499
28
  • 1500–159911
  • 1600–169919
  • 1700–179929
  • 1800–189925
  • 1900–199921
  • 2000–209927
  • 2100–219925
  • 2200–229924
  • 2300–239945
  • 2400–249963
  • 2500–259958
  • 2600–269943
  • 2700–279941
  • 2800–289925
  • 2900–299924
  • 3000–309914
  • 3100–319911
  • 3200–32997
  • 3300–33995
  • 3400–34995
  • 3500–35992
  • brute force
    147
  • binary search117
  • graphs115
  • trees109
  • dfs and similar96
  • sortings95
  • combinatorics89
  • bitmasks80
  • strings66
  • number theory62
  • dsu50
  • two pointers45
  • games39
  • divide and conquer35
  • flows33
  • probabilities33
  • hashing30
  • interactive27
  • shortest paths18
  • string suffix structures16
  • graph matchings13
  • geometry12
  • Other (9 tags)42
  • 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 59/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 34/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 21/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
    Nov
    Dec

    LessMore (max 18/day in 2026)

    150
    +76
    2064
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)724+421988
    2025-01-04 17:05Hello 20251027+471946
    2024-11-15 14:35Codeforces Round 987 (Div. 2)208+1051899
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)1737-211794
    2024-10-20 11:05Codeforces Round 980 (Div. 2)307+651815
    2024-09-14 16:35Codeforces Round 972 (Div. 2)337+1471750
    2024-08-20 16:35Codeforces Round 967 (Div. 2)2529+81603