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MtSaka

Open on Codeforces · Unique solved

Rating2391· International 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
84
Unique solved
823
Submissions (all)
1,485
Years with activity
2021–2025

Solved by problem rating

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

  • Unrated12
  • 800–899210
  • 900–99945
  • 1000–109942
  • 1100–119959
  • 1200–129949
  • 1300–139946

Solved by topic

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

  • greedy377
  • math340
  • implementation226
  • constructive algorithms199
  • brute force171
  • dp142
  • sortings

Rating changes

2021

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

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)499-442391
2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)324+42435
2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)129+842431
2025-01-04 17:05Hello 2025184+1012347
2024-12-19 17:35Codeforces Global Round 28
1400–1499
44
  • 1500–159936
  • 1600–169942
  • 1700–179945
  • 1800–189933
  • 1900–199942
  • 2000–209925
  • 2100–219921
  • 2200–229911
  • 2300–239917
  • 2400–249914
  • 2500–259915
  • 2600–26994
  • 2700–27993
  • 2800–28992
  • 2900–29992
  • 3000–30992
  • 3100–31991
  • 3200–32991
  • 133
  • data structures121
  • number theory84
  • strings84
  • binary search78
  • bitmasks70
  • graphs61
  • dfs and similar57
  • combinatorics54
  • trees43
  • two pointers42
  • dsu30
  • geometry21
  • games19
  • interactive17
  • shortest paths16
  • divide and conquer14
  • hashing14
  • probabilities11
  • matrices7
  • graph matchings6
  • flows5
  • 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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 25/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
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    Dec

    LessMore (max 20/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 14/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 20/day in 2025)

    521
    +1
    2246
    2024-10-20 11:05Codeforces Round 980 (Div. 1)278+462245
    2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)1076-642199
    2024-04-27 16:35Codeforces Round 941 (Div. 1)484-202263
    2024-04-06 17:35Codeforces Global Round 25393+252283
    2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)598-172258
    2024-02-17 17:35think-cell Round 1392+102275
    2024-01-27 16:45Codeforces Round 921 (Div. 1)267+392265