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Kuriyama3103

Open on Codeforces · Unique solved

Rating2308· 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
14
Unique solved
84
Submissions (all)
197
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated2
  • 800–89920
  • 900–9996
  • 1000–10993
  • 1100–11995
  • 1200–12998
  • 1300–13993

Solved by topic

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

  • math41
  • greedy35
  • constructive algorithms23
  • dp20
  • implementation20
  • brute force19
  • combinatorics

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-07 17:35Hello 2026348+302308
2025-12-27 17:35Good Bye 2025120+1632278
2025-09-09 16:35Codeforces Round 1049 (Div. 2)24+1752115
2025-08-28 17:35Codeforces Round 1046 (Div. 2)106+1031940
2025-08-26 16:35Codeforces Round 1045 (Div. 2)152+169
1400–1499
4
  • 1500–15997
  • 1600–16991
  • 1700–17996
  • 1800–18993
  • 1900–19991
  • 2000–20996
  • 2100–21992
  • 2200–22992
  • 2500–25992
  • 2800–28991
  • 2900–29992
  • 11
  • number theory10
  • data structures10
  • bitmasks9
  • binary search8
  • sortings7
  • dfs and similar6
  • strings6
  • trees5
  • two pointers4
  • games4
  • interactive4
  • graphs4
  • dsu3
  • ternary search3
  • probabilities2
  • divide and conquer2
  • hashing1
  • fft1
  • flows1
  • geometry1
  • 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 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 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 9/day in 2026)

    1837
    2025-03-29 16:35Codeforces Round 1014 (Div. 2)3867-631668
    2025-03-17 16:35Educational Codeforces Round 176 (Rated for Div. 2)510+1081731
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)1828+481623
    2024-10-24 16:50Codeforces Round 981 (Div. 3)852+971575
    2024-10-19 16:20Codeforces Round 979 (Div. 2)4326+571478
    2024-08-06 17:00Codeforces Round 964 (Div. 4)534+2251421
    2024-07-26 17:05Codeforces Round 962 (Div. 3)1440+2991196