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kizaru

Open on Codeforces · Unique solved

Rating2175· 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
22
Unique solved
74
Submissions (all)
201
Years with activity
2022–2025

Solved by problem rating

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

  • 800–89920
  • 900–9991
  • 1000–10993
  • 1100–11997
  • 1200–12992
  • 1300–139911
  • 1400–14995

Solved by topic

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

  • greedy37
  • constructive algorithms24
  • implementation23
  • math22
  • brute force18
  • sortings13
  • dp

Rating changes

2022

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)749-82175
2024-04-27 16:35Codeforces Round 941 (Div. 1)326+652183
2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)596+322118
2024-03-16 17:00Codeforces Round 934 (Div. 1)283+1302086
2024-03-15 16:35Educational Codeforces Round 163 (Rated for Div. 2)
1500–1599
2
  • 1600–16993
  • 1700–17996
  • 1800–18993
  • 1900–19992
  • 2000–20992
  • 2100–21991
  • 2200–22991
  • 2300–23992
  • 2400–24992
  • 3100–31991
  • 11
  • dfs and similar9
  • data structures9
  • graphs8
  • games7
  • strings7
  • binary search7
  • bitmasks5
  • trees4
  • combinatorics4
  • two pointers4
  • number theory3
  • shortest paths3
  • interactive2
  • geometry2
  • divide and conquer2
  • hashing1
  • schedules1
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 24/day in 2022)

    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 22/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 1/day in 2025)

    604
    +6
    1956
    2024-03-05 16:35Codeforces Round 932 (Div. 2)130+1311950
    2024-02-29 16:35Codeforces Round 930 (Div. 2)2+4431819
    2024-02-17 17:35think-cell Round 111405-1811376
    2024-02-15 16:35Codeforces Round 926 (Div. 2)5452-701557
    2024-02-13 16:50Codeforces Round 925 (Div. 3)109+1961627
    2022-12-11 17:35Codeforces Round 837 (Div. 2)8638-1861431
    2022-10-11 16:50Codeforces Round 826 (Div. 3)151+1431617