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Kieray

Open on Codeforces · Unique solved

Rating2176· 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
63
Unique solved
765
Submissions (all)
1,438
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.

  • Unrated190
  • 800–89976
  • 900–99911
  • 1000–109924
  • 1100–119919
  • 1200–129928
  • 1300–139929

Solved by topic

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

  • greedy289
  • math242
  • constructive algorithms188
  • dp140
  • implementation124
  • data structures121

Rating changes

2021

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

Jan
Feb
Mar
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
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)643-282176
2026-04-13 16:35Codeforces Round 1093 (Div. 1)419-462204
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)421+122250
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)844-982238
2026-02-23 17:05Codeforces Round 1082 (Div. 1)
1400–1499
26
  • 1500–159916
  • 1600–169928
  • 1700–179933
  • 1800–189931
  • 1900–199938
  • 2000–209926
  • 2100–219923
  • 2200–229918
  • 2300–239925
  • 2400–249921
  • 2500–259931
  • 2600–269921
  • 2700–27999
  • 2800–289912
  • 2900–29997
  • 3000–30995
  • 3100–31996
  • 3200–32995
  • 3300–33993
  • 3400–34991
  • 3500–35993
  • brute force
    117
  • sortings98
  • binary search74
  • graphs64
  • bitmasks63
  • dfs and similar63
  • number theory61
  • combinatorics61
  • trees59
  • two pointers41
  • dsu30
  • games30
  • strings28
  • interactive22
  • divide and conquer19
  • shortest paths15
  • probabilities13
  • geometry13
  • hashing10
  • *special8
  • graph matchings8
  • flows7
  • Other (9 tags)30
  • 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
    Jul
    Aug
    Sep
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    Nov
    Dec

    LessMore (max 26/day in 2021)

    2022

    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 41/day in 2022)

    2023

    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 23/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 13/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 11/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 14/day in 2026)

    189
    +34
    2336
    2026-02-11 17:35Codeforces Round 1079 (Div. 1)111+1162302
    2026-01-29 17:35Codeforces Round 1077 (Div. 1)453-492186
    2026-01-17 17:35Codeforces Round 1073 (Div. 1)386-72235
    2026-01-07 17:35Hello 2026482+172242
    2025-12-27 17:35Good Bye 20251705-1062225
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)279+372331
    2025-12-06 10:15Codeforces Round 1069 (Div. 1)168+482294