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Taechka

Open on Codeforces · Unique solved

Rating2190· 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
44
Unique solved
252
Submissions (all)
479
Years with activity
2018–2026

Solved by problem rating

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

  • Unrated14
  • 800–89959
  • 900–99913
  • 1000–109913
  • 1100–119921
  • 1200–129912
  • 1300–139921

Solved by topic

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

  • greedy134
  • math117
  • constructive algorithms71
  • implementation64
  • dp55
  • brute force53
  • sortings

Rating changes

2018

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)499-32190
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)213+672193
2026-02-23 17:05Codeforces Round 1082 (Div. 1)497-292126
2026-01-23 16:35Codeforces Round 1075 (Div. 2)51+1012155
2025-12-27 17:35Good Bye 2025
1400–1499
10
  • 1500–159912
  • 1600–169911
  • 1700–179915
  • 1800–189911
  • 1900–199910
  • 2000–20998
  • 2100–21996
  • 2200–22999
  • 2300–23991
  • 2400–24994
  • 2500–25991
  • 2600–26991
  • 38
  • number theory31
  • binary search29
  • data structures29
  • bitmasks24
  • strings23
  • graphs18
  • trees16
  • two pointers15
  • dfs and similar14
  • games14
  • interactive10
  • combinatorics10
  • shortest paths6
  • geometry5
  • hashing4
  • divide and conquer3
  • dsu2
  • *special2
  • fft1
  • communication1
  • flows1
  • Other (3 tags)3
  • Jun
    Jul
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    Sep
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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.

    2020

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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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.

    2023

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    2024

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

    Jan
    Feb
    Mar
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    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.

    2025

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

    Jan
    Feb
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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.

    2026

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    May
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    Dec

    LessMore (max 8/day in 2018)

    2020

    Download PNG

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

    Jan
    Feb
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    LessMore (max 13/day in 2020)

    2023

    Download PNG

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

    Jan
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    LessMore (max 14/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 11/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
    Aug
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    Dec

    LessMore (max 23/day in 2026)

    1004
    +8
    2054
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)463+822046
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)720-581964
    2025-09-09 16:35Codeforces Round 1049 (Div. 2)272+452022
    2025-05-05 16:50Codeforces Round 1023 (Div. 2)755-391977
    2025-05-01 16:35Codeforces Round 1022 (Div. 2)72+1302016
    2025-04-28 16:35Educational Codeforces Round 178 (Rated for Div. 2)1014-331886
    2025-01-22 14:05Codeforces Round 1000 (Div. 2)1221-321919