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keisuke6

Open on Codeforces · Unique solved

Rating2552· Grandmaster

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
81
Unique solved
682
Submissions (all)
1,596
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated7
  • 800–899134
  • 900–99930
  • 1000–109936
  • 1100–119933
  • 1200–129939
  • 1300–139929

Solved by topic

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

  • greedy367
  • math300
  • constructive algorithms220
  • implementation169
  • brute force150
  • dp142
  • data structures

Rating changes

2022

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

Jan
Feb
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May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-13 16:35Codeforces Round 1093 (Div. 1)137-162552
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)95+212568
2026-02-23 17:05Codeforces Round 1082 (Div. 1)310-912547
2026-02-11 17:35Codeforces Round 1079 (Div. 1)29+1362638
2026-01-07 17:35Hello 2026319-26
1400–1499
37
  • 1500–159926
  • 1600–169934
  • 1700–179945
  • 1800–189932
  • 1900–199927
  • 2000–209931
  • 2100–219923
  • 2200–229915
  • 2300–239926
  • 2400–249925
  • 2500–259914
  • 2600–269914
  • 2700–27998
  • 2800–28997
  • 2900–29996
  • 3000–30991
  • 3100–31991
  • 3200–32991
  • 3300–33991
  • 129
  • sortings103
  • binary search93
  • number theory78
  • dfs and similar62
  • strings56
  • bitmasks55
  • graphs54
  • combinatorics53
  • two pointers53
  • trees52
  • games40
  • interactive32
  • dsu24
  • divide and conquer21
  • probabilities19
  • geometry18
  • shortest paths12
  • hashing10
  • ternary search6
  • *special6
  • flows4
  • Other (10 tags)21
  • Jun
    Jul
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    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
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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.

    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
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    Nov
    Dec

    LessMore (max 36/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
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    Dec

    LessMore (max 26/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 20/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 22/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 13/day in 2026)

    2502
    2025-12-27 17:35Good Bye 2025368-392528
    2025-12-06 10:15Codeforces Round 1069 (Div. 1)186-562567
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)39+1232623
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)121+572500
    2025-10-30 19:35Pinely Round 5 (Div. 1 + Div. 2)421-1002443
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)92+822543
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)266+112461