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Top rated · Stats

yukai

Open on Codeforces · Unique solved

Rating2127· 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
954
Submissions (all)
2,889
Years with activity
2021–2025

Solved by problem rating

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

  • Unrated26
  • 800–89976
  • 900–99926
  • 1000–109919
  • 1100–119929
  • 1200–129931
  • 1300–139934

Solved by topic

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

  • math319
  • greedy315
  • dp239
  • constructive algorithms223
  • implementation201
  • data structures171

Rating changes

2021

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-09-09 16:35Codeforces Round 1049 (Div. 2)157+432127
2025-08-28 17:35Codeforces Round 1046 (Div. 1)652-412084
2025-05-31 16:35Codeforces Round 1028 (Div. 1)903-1042125
2025-05-11 17:05Codeforces Round 1024 (Div. 1)446-362229
2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)
1400–1499
41
  • 1500–159967
  • 1600–169951
  • 1700–179940
  • 1800–189951
  • 1900–199961
  • 2000–209967
  • 2100–219955
  • 2200–229953
  • 2300–239957
  • 2400–249945
  • 2500–259932
  • 2600–269922
  • 2700–279916
  • 2800–289916
  • 2900–299915
  • 3000–309911
  • 3100–31995
  • 3200–32993
  • 3300–33993
  • 3400–34992
  • brute force
    164
  • sortings115
  • binary search112
  • graphs109
  • number theory99
  • dfs and similar88
  • geometry84
  • two pointers69
  • bitmasks61
  • trees55
  • combinatorics54
  • games40
  • strings40
  • dsu35
  • probabilities31
  • divide and conquer31
  • interactive30
  • shortest paths26
  • hashing15
  • matrices13
  • ternary search11
  • string suffix structures8
  • Other (8 tags)39
  • 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.

    2022

    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.

    2023

    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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 21/day in 2021)

    2022

    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 70/day in 2022)

    2023

    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 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 19/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 17/day in 2025)

    196
    +108
    2265
    2025-02-11 16:35Codeforces Round 1004 (Div. 1)422+232157
    2023-09-30 17:35Codeforces Round 901 (Div. 1)439+242134
    2023-07-29 17:05Codeforces Round 889 (Div. 1)386+512110
    2023-07-16 16:35Codeforces Round 885 (Div. 2)261+162059
    2022-11-12 16:35Codeforces Round 833 (Div. 2)221+192043
    2022-11-06 17:05CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!)837-32024
    2022-11-04 16:35Codeforces Round 832 (Div. 2)326+62027