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Top rated · Stats

daiarineko

Open on Codeforces · Unique solved

Rating2124· 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
43
Unique solved
458
Submissions (all)
1,006
Years with activity
2020–2026

Solved by problem rating

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

  • Unrated36
  • 800–89959
  • 900–99918
  • 1000–109913
  • 1100–119910
  • 1200–129918
  • 1300–139911

Solved by topic

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

  • greedy152
  • math139
  • dp110
  • data structures106
  • implementation104
  • brute force84
  • constructive algorithms

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-04-26 11:35Codeforces Round 1021 (Div. 1)503-742124
2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)661-142198
2025-03-23 08:05Codeforces Round 1012 (Div. 1)182+612212
2024-11-15 14:35Codeforces Round 987 (Div. 2)74+802151
2024-10-20 11:05Codeforces Round 980 (Div. 1)788
1400–1499
43
  • 1500–159912
  • 1600–169917
  • 1700–179910
  • 1800–189916
  • 1900–199921
  • 2000–209916
  • 2100–219922
  • 2200–229921
  • 2300–239924
  • 2400–249932
  • 2500–259914
  • 2600–269910
  • 2700–279912
  • 2800–28996
  • 2900–29992
  • 3000–30995
  • 3100–31995
  • 3200–32992
  • 3300–33993
  • 79
  • sortings54
  • binary search52
  • graphs47
  • dfs and similar38
  • strings37
  • number theory34
  • trees32
  • two pointers29
  • bitmasks27
  • dsu25
  • combinatorics23
  • divide and conquer20
  • probabilities20
  • *special16
  • shortest paths13
  • geometry13
  • hashing12
  • interactive10
  • games10
  • string suffix structures10
  • matrices6
  • Other (9 tags)22
  • 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.

    2021

    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.

    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
    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
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    Aug
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    Dec

    LessMore (max 7/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 6/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    LessMore (max 19/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    Jun
    Jul
    Aug
    Sep
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    LessMore (max 19/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
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    Dec

    LessMore (max 21/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 26/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Nov
    Dec

    LessMore (max 37/day in 2026)

    -59
    2071
    2024-09-29 17:35Codeforces Round 976 (Div. 2) and Divide By Zero 9.018+1912130
    2024-08-10 16:35Codeforces Round 965 (Div. 2)742+41939
    2024-03-16 17:00Codeforces Round 934 (Div. 2)144+811935
    2024-01-30 16:45Codeforces Round 922 (Div. 2)604+381854
    2024-01-06 17:05Hello 20243459-601816
    2023-11-25 17:20CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!)1252+01876
    2023-10-22 09:05Codeforces Round 904 (Div. 2)901-331876