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Irval

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
42
Unique solved
349
Submissions (all)
841
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.

  • Unrated10
  • 800–89988
  • 900–99920
  • 1000–109920
  • 1100–119920
  • 1200–129913
  • 1300–139915

Solved by topic

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

  • greedy138
  • implementation111
  • math108
  • constructive algorithms71
  • brute force65
  • data structures61

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
2025-07-05 16:35Codeforces Round 1035 (Div. 2)42+1422118
2025-05-31 16:35Codeforces Round 1028 (Div. 1)744-331976
2025-05-24 16:35Codeforces Round 1026 (Div. 2)131+952009
2025-05-11 17:05Codeforces Round 1024 (Div. 2)136+841914
2025-05-05 16:50Codeforces Round 1023 (Div. 2)203
1400–1499
28
  • 1500–159910
  • 1600–169918
  • 1700–179921
  • 1800–189921
  • 1900–199912
  • 2000–209923
  • 2100–21996
  • 2200–22996
  • 2300–23998
  • 2400–24991
  • 2500–25992
  • 2600–26991
  • 2700–27993
  • 3100–31991
  • 3200–32991
  • 3400–34991
  • sortings
    55
  • dp46
  • binary search45
  • strings37
  • dfs and similar30
  • graphs30
  • two pointers28
  • number theory22
  • trees19
  • combinatorics15
  • bitmasks13
  • geometry11
  • hashing8
  • shortest paths8
  • dsu7
  • ternary search6
  • games6
  • interactive5
  • flows4
  • graph matchings4
  • probabilities4
  • meet-in-the-middle4
  • Other (8 tags)12
  • 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 14/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
    Nov
    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 19/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 22/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 13/day in 2025)

    +122
    1830
    2023-01-27 16:50Codeforces Round 847 (Div. 3)88+1441708
    2023-01-08 16:35Educational Codeforces Round 141 (Rated for Div. 2)1385+551564
    2023-01-05 16:35Codeforces Round 842 (Div. 2)3581-241509
    2022-12-30 17:05Good Bye 2022: 2023 is NEAR2373+801533
    2022-12-18 16:50Codeforces Round 839 (Div. 3)1330+221453
    2022-12-12 16:35Educational Codeforces Round 139 (Rated for Div. 2)2189+341431
    2022-12-11 17:35Codeforces Round 837 (Div. 2)4168-411397