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Yuichiro17

Open on Codeforces · Unique solved

Rating2384· International 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
23
Unique solved
208
Submissions (all)
407
Years with activity
2025–2026

Solved by problem rating

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

  • Unrated17
  • 800–89932
  • 900–9997
  • 1000–10998
  • 1100–11999
  • 1200–129910
  • 1300–139915

Solved by topic

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

  • greedy109
  • math81
  • constructive algorithms66
  • dp54
  • implementation49
  • data structures37
  • brute force

Rating changes

2025

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2025

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)173+462384
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)94+1402338
2025-10-10 16:50Codeforces Round 1057 (Div. 2)39+1062198
2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)168+462092
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)
1400–1499
8
  • 1500–15998
  • 1600–16992
  • 1700–179911
  • 1800–18998
  • 1900–19998
  • 2000–20998
  • 2100–219913
  • 2200–229914
  • 2300–23996
  • 2400–24996
  • 2500–25997
  • 2600–26993
  • 2700–27993
  • 2800–28992
  • 2900–29992
  • 3000–30991
  • 35
  • sortings27
  • number theory27
  • binary search25
  • bitmasks24
  • graphs23
  • combinatorics21
  • two pointers19
  • dfs and similar19
  • interactive14
  • trees13
  • divide and conquer10
  • strings10
  • games7
  • dsu6
  • geometry6
  • *special6
  • ternary search4
  • probabilities3
  • communication2
  • shortest paths2
  • hashing2
  • Other (3 tags)3
  • 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 17/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)

    1042
    -10
    2046
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)417+1052056
    2025-09-17 16:35Codeforces Round 1051 (Div. 2)323+591951
    2025-09-15 16:35Educational Codeforces Round 182 (Rated for Div. 2)979-91892
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)751-191901
    2025-08-26 16:35Codeforces Round 1045 (Div. 2)5782-1571920
    2025-08-24 16:35Codeforces Round 1044 (Div. 2)85+1042077
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)420+1051973