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Cubber

Open on Codeforces · Unique solved

Rating2607· International 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
24
Unique solved
712
Submissions (all)
1,704
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.

  • Unrated43
  • 800–899116
  • 900–99924
  • 1000–109931
  • 1100–119942
  • 1200–129928
  • 1300–139934

Solved by topic

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

  • greedy264
  • math212
  • implementation184
  • dp177
  • constructive algorithms149
  • data structures137

Rating changes

2022

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

Jan
Feb
Mar
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)152-172607
2026-04-13 16:35Codeforces Round 1093 (Div. 1)88+82624
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)240-562616
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)19+1482672
2026-02-23 17:05Codeforces Round 1082 (Div. 1)
1400–1499
28
  • 1500–159936
  • 1600–169927
  • 1700–179932
  • 1800–189922
  • 1900–199925
  • 2000–209922
  • 2100–219923
  • 2200–229919
  • 2300–239936
  • 2400–249940
  • 2500–259917
  • 2600–269915
  • 2700–27999
  • 2800–289917
  • 2900–29998
  • 3000–30995
  • 3100–31993
  • 3200–32997
  • 3300–33992
  • 3400–34991
  • brute force
    133
  • binary search78
  • strings75
  • sortings68
  • combinatorics64
  • dfs and similar60
  • trees55
  • graphs52
  • bitmasks46
  • number theory44
  • two pointers39
  • games34
  • interactive31
  • dsu29
  • divide and conquer24
  • *special21
  • hashing19
  • flows16
  • probabilities12
  • geometry12
  • string suffix structures11
  • shortest paths11
  • Other (9 tags)37
  • 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 18/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 15/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 19/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 31/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 29/day in 2026)

    184
    -28
    2524
    2026-01-17 17:35Codeforces Round 1073 (Div. 1)57+1082552
    2026-01-07 17:35Hello 2026265+112444
    2025-12-27 17:35Good Bye 2025674-702433
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)113+732503
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)125+742430
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)129+1022356
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)369-92254