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Ackhava

Open on Codeforces · Unique solved

Rating2196· 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
41
Unique solved
772
Submissions (all)
1,621
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated8
  • 800–899200
  • 900–99936
  • 1000–109934
  • 1100–119944
  • 1200–129946
  • 1300–139951

Solved by topic

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

  • greedy363
  • math327
  • implementation239
  • constructive algorithms190
  • brute force174
  • dp157
  • data structures

Rating changes

2021

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

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-23 16:35Codeforces Round 1075 (Div. 2)37+1052196
2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)95+852091
2025-12-27 17:35Good Bye 2025971+292006
2025-02-28 16:50Codeforces Round 1007 (Div. 2)1738-851977
2025-01-22 14:05Codeforces Round 1000 (Div. 2)128
1400–1499
44
  • 1500–159934
  • 1600–169943
  • 1700–179936
  • 1800–189930
  • 1900–199947
  • 2000–209923
  • 2100–219915
  • 2200–229917
  • 2300–239925
  • 2400–249922
  • 2500–25997
  • 2600–26995
  • 2700–27992
  • 2800–28992
  • 2900–29991
  • 135
  • sortings122
  • binary search102
  • number theory84
  • strings70
  • dfs and similar68
  • graphs61
  • bitmasks60
  • combinatorics57
  • two pointers49
  • trees49
  • dsu31
  • games28
  • interactive27
  • geometry22
  • divide and conquer20
  • hashing16
  • shortest paths15
  • probabilities7
  • ternary search6
  • *special5
  • matrices4
  • Other (8 tags)21
  • 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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    Dec

    LessMore (max 16/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    LessMore (max 9/day in 2022)

    2023

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 17/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    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 41/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 16/day in 2026)

    +87
    2062
    2025-01-17 16:35Codeforces Round 997 (Div. 2)1612-811975
    2024-11-15 14:35Codeforces Round 987 (Div. 2)22+2092056
    2024-10-28 16:35Educational Codeforces Round 171 (Rated for Div. 2)4047-1221847
    2024-10-26 16:35Codeforces Round 982 (Div. 2)481-31969
    2024-09-20 16:35Codeforces Round 973 (Div. 2)1650-831972
    2024-06-27 16:35Educational Codeforces Round 167 (Rated for Div. 2)6+2922055
    2024-05-31 12:05Codeforces Round 949 (Div. 2)525+651763