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annyeong1

Open on Codeforces · Unique solved

Rating2419· 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
150
Unique solved
1,536
Submissions (all)
3,289
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated427
  • 800–899284
  • 900–99955
  • 1000–109962
  • 1100–119982
  • 1200–129963
  • 1300–139972

Solved by topic

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

  • greedy599
  • math496
  • implementation338
  • constructive algorithms329
  • brute force230
  • dp192
  • sortings

Rating changes

2022

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

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)357-412419
2026-04-13 16:35Codeforces Round 1093 (Div. 1)108+422460
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)356-272418
2026-02-23 17:05Codeforces Round 1082 (Div. 1)292-542445
2026-02-11 17:35Codeforces Round 1079 (Div. 1)
1400–1499
72
  • 1500–159951
  • 1600–169949
  • 1700–179967
  • 1800–189946
  • 1900–199959
  • 2000–209938
  • 2100–219934
  • 2200–229920
  • 2300–239920
  • 2400–249916
  • 2500–259912
  • 2600–26994
  • 2700–27992
  • 3000–30991
  • 182
  • data structures164
  • binary search140
  • number theory117
  • strings106
  • bitmasks92
  • two pointers82
  • graphs79
  • dfs and similar70
  • combinatorics68
  • trees54
  • games50
  • interactive37
  • geometry33
  • dsu30
  • *special24
  • divide and conquer20
  • probabilities14
  • hashing14
  • shortest paths11
  • ternary search11
  • flows6
  • Other (9 tags)23
  • 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
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 21/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
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    Aug
    Sep
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    Dec

    LessMore (max 20/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 46/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 46/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 37/day in 2026)

    76
    +82
    2499
    2026-01-29 17:35Codeforces Round 1077 (Div. 1)147+252417
    2026-01-17 17:35Codeforces Round 1073 (Div. 1)318-312392
    2026-01-07 17:35Hello 2026284+122423
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)330-82411
    2025-12-06 10:15Codeforces Round 1069 (Div. 1)81+812419
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)194+602338
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)377-242278