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yuki_keshiki

Open on Codeforces · Unique solved

Rating2141· 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
27
Unique solved
1,260
Submissions (all)
2,719
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.

  • Unrated11
  • 800–899148
  • 900–99930
  • 1000–109930
  • 1100–119951
  • 1200–129944
  • 1300–139973

Solved by topic

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

  • greedy546
  • math467
  • dp351
  • implementation314
  • constructive algorithms289
  • data structures287

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
2023-10-30 16:35Codeforces Round 907 (Div. 2)121+472141
2023-10-22 13:05Codeforces Round 905 (Div. 2)122+352094
2023-10-22 09:05Codeforces Round 904 (Div. 2)168+392059
2023-10-09 16:35Educational Codeforces Round 156 (Rated for Div. 2)475-32020
2023-09-25 16:35Codeforces Round 899 (Div. 2)512
1400–1499
92
  • 1500–159986
  • 1600–169990
  • 1700–179975
  • 1800–189959
  • 1900–1999105
  • 2000–209968
  • 2100–219960
  • 2200–229971
  • 2300–239945
  • 2400–249965
  • 2500–259927
  • 2600–269915
  • 2700–27998
  • 2800–28995
  • 2900–29992
  • brute force
    278
  • binary search195
  • sortings192
  • dfs and similar139
  • number theory135
  • bitmasks134
  • graphs131
  • two pointers129
  • strings111
  • trees103
  • combinatorics100
  • dsu50
  • divide and conquer38
  • games33
  • shortest paths33
  • hashing30
  • geometry27
  • probabilities22
  • matrices20
  • interactive19
  • flows16
  • string suffix structures10
  • Other (7 tags)28
  • 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 28/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 23/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 18/day in 2026)

    -10
    2023
    2023-09-24 16:35Educational Codeforces Round 155 (Rated for Div. 2)259+372033
    2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)875+271996
    2023-09-11 16:35Codeforces Round 897 (Div. 2)347+361969
    2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)1422-221933
    2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)743+511955
    2023-07-16 16:35Codeforces Round 885 (Div. 2)1076-451904
    2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)1442-291949