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serialcomder

Open on Codeforces · Unique solved

Rating2118· 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
94
Unique solved
1,994
Submissions (all)
4,297
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.

  • Unrated306
  • 800–899253
  • 900–99963
  • 1000–109970
  • 1100–119986
  • 1200–129973
  • 1300–139985

Solved by topic

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

  • greedy754
  • math697
  • constructive algorithms465
  • implementation452
  • data structures370
  • brute force366

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
2025-01-04 17:05Hello 20251491-592118
2024-08-25 16:35Codeforces Round 968 (Div. 2)32+1312177
2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)858+232046
2024-08-10 16:35Codeforces Round 965 (Div. 2)190+752023
2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)1274
1400–1499
101
  • 1500–159970
  • 1600–169990
  • 1700–179985
  • 1800–189970
  • 1900–1999127
  • 2000–209988
  • 2100–2199100
  • 2200–2299104
  • 2300–239986
  • 2400–249976
  • 2500–259940
  • 2600–26999
  • 2700–27997
  • 2800–28991
  • 2900–29992
  • 3000–30991
  • 3100–31991
  • dp
    349
  • sortings263
  • binary search260
  • dfs and similar216
  • number theory200
  • graphs196
  • trees161
  • bitmasks151
  • two pointers140
  • strings127
  • combinatorics123
  • dsu93
  • games66
  • interactive55
  • divide and conquer51
  • shortest paths50
  • geometry46
  • hashing42
  • probabilities32
  • ternary search14
  • matrices14
  • flows14
  • Other (9 tags)60
  • 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 27/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 25/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 40/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 35/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)

    +4
    1948
    2024-07-23 16:35Codeforces Round 961 (Div. 2)621+11944
    2024-07-15 16:35Codeforces Round 958 (Div. 2)1069-351943
    2024-07-07 16:50Codeforces Round 956 (Div. 2) and ByteRace 2024319+481978
    2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)1837-531930
    2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)453+121983
    2024-06-16 11:05Codeforces Round 953 (Div. 2)1060-631971
    2024-06-09 17:35Codeforces Global Round 26714+402034