CF Elite Tracker
TopExploreDivisionsLearnPracticeUser solvedHelp
HelpLog inSign up

Top rated · Stats

hakuuuuya

Open on Codeforces · Unique solved

Rating2220· 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
14
Unique solved
75
Submissions (all)
130
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.

  • Unrated13
  • 800–89914
  • 900–9993
  • 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”.

  • greedy42
  • math34
  • constructive algorithms16
  • data structures15
  • implementation14
  • dp13
  • brute force

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
2026-04-28 16:50Codeforces Round 1095 (Div. 2)7+1942220
2026-04-21 16:35Educational Codeforces Round 189 (Rated for Div. 2)244+262026
2026-03-16 16:50Educational Codeforces Round 188 (Rated for Div. 2)1322-892000
2026-02-23 17:05Codeforces Round 1082 (Div. 1)283+802089
2026-01-23 16:35Codeforces Round 1075 (Div. 2)
1400–1499
3
  • 1500–15991
  • 1600–16992
  • 1700–17993
  • 1800–18992
  • 1900–19993
  • 2000–20992
  • 2100–21995
  • 2200–22991
  • 2300–23991
  • 2400–24991
  • 2500–25994
  • 2600–26991
  • 2900–29992
  • 12
  • binary search11
  • number theory9
  • bitmasks8
  • sortings8
  • two pointers7
  • strings5
  • dfs and similar3
  • graphs3
  • combinatorics3
  • divide and conquer3
  • ternary search3
  • probabilities3
  • trees2
  • dsu2
  • matrices2
  • interactive2
  • games2
  • hashing1
  • string suffix structures1
  • geometry1
  • graph matchings1
  • 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 11/day in 2026)

    1362
    -80
    2009
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1521-722089
    2025-11-28 16:35Educational Codeforces Round 185 (Rated for Div. 2)24+1432161
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)360+1072018
    2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)117+1991911
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)1364+1531712
    2025-09-25 16:50Codeforces Round 1054 (Div. 3)85+3011559
    2025-07-27 16:35Codeforces Round 1039 (Div. 2)3309+2351258