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Yao_yx

Open on Codeforces · Unique solved

Rating2188· 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
645
Submissions (all)
1,530
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.

  • Unrated14
  • 800–89934
  • 900–9994
  • 1000–10998
  • 1100–11998
  • 1200–12999
  • 1300–13999

Solved by topic

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

  • dp254
  • math207
  • data structures206
  • greedy180
  • trees123
  • constructive algorithms117
  • dfs and similar

Rating changes

2023

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

Jan
Feb
Mar
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
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)158+1012188
2026-02-21 16:35Codeforces Round 1081 (Div. 2)129+532087
2026-02-08 11:05Codeforces Round 1078 (Div. 2)100+852034
2025-08-28 17:35Codeforces Round 1046 (Div. 2)197+571949
2025-08-26 16:35Codeforces Round 1045 (Div. 2)118
1400–1499
8
  • 1500–15995
  • 1600–169916
  • 1700–179916
  • 1800–189917
  • 1900–199925
  • 2000–209943
  • 2100–219946
  • 2200–229960
  • 2300–239949
  • 2400–249967
  • 2500–259944
  • 2600–269939
  • 2700–279923
  • 2800–289922
  • 2900–299920
  • 3000–309916
  • 3100–319912
  • 3200–329913
  • 3300–33995
  • 3400–34995
  • 3500–35998
  • 116
  • graphs106
  • brute force105
  • binary search98
  • implementation95
  • combinatorics90
  • bitmasks82
  • sortings55
  • divide and conquer53
  • number theory47
  • dsu40
  • strings39
  • shortest paths29
  • two pointers29
  • probabilities27
  • games22
  • geometry18
  • hashing16
  • matrices15
  • interactive13
  • fft10
  • flows9
  • Other (6 tags)26
  • 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.

    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 20/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 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 21/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 26/day in 2026)

    +163
    1892
    2025-08-24 16:35Codeforces Round 1044 (Div. 2)3110-561729
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)757+1181785
    2025-05-17 16:50Codeforces Round 1025 (Div. 2)1994-141667
    2025-01-22 14:05Codeforces Round 1000 (Div. 2)296+1901681
    2025-01-04 17:05Hello 20254832-181491
    2024-12-20 16:35Codeforces Round 994 (Div. 2)806+1561509
    2024-08-25 16:35Codeforces Round 968 (Div. 2)3943+491353