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Takanashi___Rikka

Open on Codeforces · Unique solved

Rating2166· 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
9
Unique solved
50
Submissions (all)
121
Years with activity
2025–2026

Solved by problem rating

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

  • Unrated1
  • 800–8998
  • 900–9991
  • 1000–10993
  • 1100–11993
  • 1200–12991
  • 1300–13995

Solved by topic

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

  • greedy27
  • math21
  • data structures13
  • constructive algorithms13
  • brute force11
  • dp11
  • implementation

Rating changes

2025

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2025

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)464+292166
2025-10-12 17:05Codeforces Round 1058 (Div. 1)257+922137
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)955+02045
2025-08-28 17:35Codeforces Round 1046 (Div. 2)25+2052045
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)
1400–1499
5
  • 1600–16991
  • 1700–17997
  • 1800–18992
  • 2000–20991
  • 2100–21995
  • 2300–23992
  • 2900–29991
  • 3000–30991
  • 3200–32991
  • 3300–33991
  • 3500–35991
  • 9
  • graphs7
  • dfs and similar5
  • dsu5
  • binary search5
  • sortings5
  • number theory5
  • combinatorics5
  • games5
  • two pointers4
  • interactive4
  • strings3
  • trees2
  • flows1
  • graph matchings1
  • hashing1
  • 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 13/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 16/day in 2026)

    745
    +180
    1840
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)1270+1761660
    2025-04-28 16:35Educational Codeforces Round 178 (Rated for Div. 2)251+3771484
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)922+4871107
    2025-04-03 16:35Educational Codeforces Round 177 (Rated for Div. 2)1113+620620