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Timmyliuyunxi

Open on Codeforces · Unique solved

Rating2238· 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
29
Unique solved
559
Submissions (all)
1,573
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated10
  • 800–89960
  • 900–99914
  • 1000–109913
  • 1100–119923
  • 1200–129920
  • 1300–139919

Solved by topic

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

  • greedy214
  • math192
  • dp160
  • data structures153
  • constructive algorithms116
  • implementation109

Rating changes

2023

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-23 16:35Codeforces Round 1075 (Div. 2)3+2462238
2026-01-17 17:35Codeforces Round 1073 (Div. 1)523+311992
2026-01-07 17:35Hello 20261816-411961
2025-05-17 16:50Codeforces Round 1025 (Div. 2)67+1362002
2025-05-01 16:35Codeforces Round 1022 (Div. 2)3612-136
1400–1499
24
  • 1500–159917
  • 1600–169919
  • 1700–179929
  • 1800–189927
  • 1900–199943
  • 2000–209943
  • 2100–219933
  • 2200–229940
  • 2300–239935
  • 2400–249935
  • 2500–259917
  • 2600–269911
  • 2700–27999
  • 2800–28999
  • 2900–29995
  • 3000–30991
  • 3100–31993
  • brute force
    104
  • dfs and similar95
  • trees94
  • binary search93
  • graphs80
  • number theory73
  • sortings66
  • bitmasks62
  • combinatorics47
  • strings45
  • two pointers41
  • divide and conquer37
  • dsu32
  • games24
  • hashing24
  • shortest paths18
  • interactive12
  • probabilities12
  • geometry9
  • matrices9
  • string suffix structures8
  • 2-sat7
  • Other (8 tags)31
  • Jun
    Jul
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    Sep
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    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.

    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 16/day in 2023)

    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 30/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 42/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 15/day in 2026)

    1866
    2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)825+362002
    2025-03-29 16:35Codeforces Round 1014 (Div. 2)256+771966
    2025-03-23 08:05Codeforces Round 1012 (Div. 2)465-151889
    2025-03-22 16:35Codeforces Round 1011 (Div. 2)991-191904
    2025-02-28 16:50Codeforces Round 1007 (Div. 2)1855-741923
    2025-02-27 16:35Educational Codeforces Round 175 (Rated for Div. 2)1626-931997
    2025-02-16 16:35Codeforces Round 1005 (Div. 2)159+542090