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Ar1hara_Nanami

Open on Codeforces · Unique solved

Rating2222· 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
221
Submissions (all)
468
Years with activity
2024–2025

Solved by problem rating

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

  • Unrated71
  • 800–89931
  • 900–9997
  • 1000–10999
  • 1100–11999
  • 1200–12999
  • 1300–13999

Solved by topic

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

  • greedy92
  • math80
  • constructive algorithms49
  • brute force44
  • implementation35
  • dp33
  • data structures

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-07-27 16:35Codeforces Round 1039 (Div. 2)6+2252222
2025-06-15 11:05Codeforces Round 1031 (Div. 2)72+1121997
2025-06-12 16:35Codeforces Round 1030 (Div. 2)2222-731885
2025-02-28 16:50Codeforces Round 1007 (Div. 2)687-71958
2025-02-02 16:35Codeforces Round 1002 (Div. 2)125
1400–1499
13
  • 1500–15994
  • 1600–169912
  • 1700–179914
  • 1800–189914
  • 1900–19998
  • 2000–20994
  • 2100–21993
  • 2200–22992
  • 2300–23991
  • 2600–26991
  • 28
  • binary search26
  • sortings26
  • number theory25
  • two pointers22
  • bitmasks13
  • dfs and similar11
  • combinatorics10
  • graphs10
  • games8
  • strings8
  • trees5
  • dsu5
  • shortest paths4
  • geometry4
  • divide and conquer3
  • interactive3
  • ternary search2
  • probabilities2
  • graph matchings1
  • flows1
  • 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.

    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 25/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 9/day in 2025)

    +132
    1965
    2025-01-12 16:35Codeforces Round 996 (Div. 2)487+821833
    2024-12-28 17:35Good Bye 2024: 2025 is NEAR2981-331751
    2024-12-24 16:35Educational Codeforces Round 173 (Rated for Div. 2)387+951784
    2024-12-08 16:35Codeforces Round 992 (Div. 2)1791-171689
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)1557+451706
    2024-11-15 14:35Codeforces Round 987 (Div. 2)1736-11661
    2024-11-01 16:35Codeforces Round 983 (Div. 2)3353-561662