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HotoKokoacpp

Open on Codeforces · Unique solved

Rating2159· 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
12
Unique solved
376
Submissions (all)
701
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated158
  • 800–89931
  • 900–9995
  • 1000–10999
  • 1100–11997
  • 1200–12997
  • 1300–139910

Solved by topic

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

  • greedy107
  • math83
  • dp69
  • constructive algorithms55
  • data structures55
  • implementation36
  • trees

Rating changes

2023

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

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-03-21 16:35Codeforces Round 1087 (Div. 2)69+762159
2026-01-29 17:35Codeforces Round 1077 (Div. 1)286+652083
2026-01-23 16:35Codeforces Round 1075 (Div. 2)1320-812018
2026-01-17 17:35Codeforces Round 1073 (Div. 1)286+972099
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)344
1400–1499
6
  • 1500–15997
  • 1600–16998
  • 1700–17997
  • 1800–189912
  • 1900–19997
  • 2000–20996
  • 2100–21999
  • 2200–22998
  • 2300–23997
  • 2400–24995
  • 2500–259911
  • 2600–26994
  • 2700–27998
  • 2800–28999
  • 2900–29998
  • 3000–30995
  • 3100–31998
  • 3200–32996
  • 3300–33994
  • 3400–34992
  • 3500–35992
  • 32
  • brute force31
  • binary search30
  • sortings29
  • combinatorics27
  • dfs and similar26
  • graphs24
  • bitmasks24
  • number theory22
  • strings21
  • two pointers15
  • interactive14
  • games14
  • divide and conquer13
  • dsu13
  • string suffix structures11
  • hashing7
  • fft6
  • probabilities5
  • graph matchings5
  • flows4
  • matrices4
  • Other (8 tags)13
  • 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
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    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
    Nov
    Dec

    LessMore (max 4/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 25/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 17/day in 2026)

    +119
    2002
    2025-11-10 17:05Codeforces Round 1063 (Div. 2)6553-1891883
    2025-09-09 16:35Codeforces Round 1049 (Div. 2)36+2162072
    2025-07-27 16:35Codeforces Round 1039 (Div. 2)861+911856
    2025-05-31 16:35Codeforces Round 1028 (Div. 2)209+2231765
    2025-05-24 16:35Codeforces Round 1026 (Div. 2)121+4221542
    2024-08-04 16:35Codeforces Round 963 (Div. 2)2118+3551120
    2023-03-09 12:35Codeforces Round 857 (Div. 2)34+765765