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HoshimiOWO

Open on Codeforces · Unique solved

Rating2556· 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
59
Unique solved
994
Submissions (all)
2,320
Years with activity
2020–2025

Solved by problem rating

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

  • Unrated581
  • 800–89969
  • 900–99915
  • 1000–109918
  • 1100–119920
  • 1200–129920
  • 1300–139923

Solved by topic

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

  • greedy213
  • math162
  • constructive algorithms143
  • implementation118
  • brute force97
  • dp94
  • data structures

Rating changes

2020

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-10-29 11:55Codeforces Round 831 (Div. 1 + Div. 2)30+1202556
2022-10-23 09:50Codeforces Round 829 (Div. 1)159+362436
2022-10-15 16:50Codeforces Global Round 23217+482400
2022-09-30 17:05Codeforces Global Round 22264+282352
2022-08-16 16:35Codeforces Round 814 (Div. 1)296
1400–1499
19
  • 1500–159922
  • 1600–169925
  • 1700–179925
  • 1800–189921
  • 1900–199926
  • 2000–209917
  • 2100–219921
  • 2200–229915
  • 2300–239915
  • 2400–249913
  • 2500–259912
  • 2600–26995
  • 2700–27997
  • 2800–28993
  • 3000–30992
  • 81
  • sortings64
  • binary search56
  • number theory47
  • dfs and similar45
  • graphs42
  • strings37
  • trees37
  • two pointers28
  • bitmasks26
  • dsu22
  • combinatorics22
  • interactive16
  • geometry15
  • games15
  • divide and conquer10
  • shortest paths9
  • probabilities6
  • hashing4
  • flows3
  • matrices3
  • ternary search2
  • Other (7 tags)8
  • 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.

    2021

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

    Jan
    Feb
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    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.

    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
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    Apr
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    Jun
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    Aug
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    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.

    May
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    Dec

    LessMore (max 28/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 32/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 23/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
    Jul
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    LessMore (max 3/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
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    Dec

    LessMore (max 1/day in 2025)

    -11
    2324
    2022-07-31 16:35CodeTON Round 2 (Div. 1 + Div. 2, Rated, Prizes!)144+1032335
    2022-07-16 16:35Codeforces Round 808 (Div. 1)270+382232
    2022-07-08 16:35Educational Codeforces Round 131 (Rated for Div. 2)28+1182194
    2022-07-04 16:35Codeforces Round 804 (Div. 2)53+1252076
    2022-06-28 16:50Codeforces Round 803 (Div. 2)535-61951
    2022-06-25 16:50Codeforces Global Round 211889-711957
    2022-06-19 11:05Codeforces Round 802 (Div. 2)142+552028