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NotNanYan

Open on Codeforces · Unique solved

Rating2217· 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
47
Submissions (all)
92
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated1
  • 800–89911
  • 900–9994
  • 1000–10992
  • 1100–11993
  • 1200–12994
  • 1300–13995

Solved by topic

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

  • greedy27
  • math16
  • dp14
  • constructive algorithms11
  • implementation11
  • binary search8
  • brute force

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
2026-03-29 16:50Codeforces Round 1089 (Div. 2)1+3342217
2026-03-21 16:35Codeforces Round 1087 (Div. 2)39+2371883
2024-04-13 16:35Codeforces Round 939 (Div. 2)1803+41646
2024-04-08 16:50Codeforces Round 938 (Div. 3)840+831642
2024-03-22 16:35Codeforces Round 936 (Div. 2)2193
1400–1499
2
  • 1500–15991
  • 1600–16993
  • 1700–17991
  • 1800–18992
  • 2000–20991
  • 2100–21992
  • 2200–22992
  • 2700–27992
  • 2900–29991
  • 8
  • data structures8
  • number theory8
  • strings6
  • games4
  • trees3
  • two pointers3
  • sortings3
  • bitmasks3
  • hashing2
  • string suffix structures2
  • interactive2
  • graphs2
  • dfs and similar2
  • combinatorics1
  • fft1
  • schedules1
  • shortest paths1
  • geometry1
  • 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 2024)

    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 13/day in 2026)

    +107
    1559
    2024-03-19 10:20Codeforces Round 935 (Div. 3)1511+1161452
    2024-03-16 17:00Codeforces Round 934 (Div. 2)899+3071336
    2024-03-11 16:50Codeforces Round 933 (Div. 3)1030+3881029
    2024-02-19 16:50Codeforces Round 928 (Div. 4)243+641641