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Top rated · Stats

koukanni

Open on Codeforces · Unique solved

Rating2329· 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
37
Unique solved
1,209
Submissions (all)
2,308
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated216
  • 800–899142
  • 900–99932
  • 1000–109937
  • 1100–119953
  • 1200–129943
  • 1300–139937

Solved by topic

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

  • greedy464
  • math394
  • constructive algorithms262
  • dp257
  • implementation257
  • data structures234

Rating changes

2023

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

Jan
Feb
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May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-07 17:35Hello 2026179+912329
2025-11-10 17:05Codeforces Round 1063 (Div. 2)15+1422238
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)1674-1012096
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)119+1802197
2025-07-31 17:35Codeforces Round 1040 (Div. 1)626
1400–1499
53
  • 1500–159931
  • 1600–169953
  • 1700–179962
  • 1800–189954
  • 1900–199984
  • 2000–209948
  • 2100–219950
  • 2200–229950
  • 2300–239941
  • 2400–249944
  • 2500–259934
  • 2600–269921
  • 2700–279914
  • 2800–28995
  • 2900–29992
  • 3000–30991
  • 3100–31991
  • 3200–32991
  • brute force
    231
  • binary search153
  • sortings153
  • number theory120
  • dfs and similar116
  • bitmasks103
  • graphs100
  • two pointers97
  • trees94
  • combinatorics94
  • strings82
  • dsu42
  • divide and conquer42
  • games39
  • shortest paths31
  • interactive27
  • geometry23
  • hashing20
  • probabilities14
  • ternary search12
  • fft11
  • flows10
  • Other (8 tags)31
  • 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 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 25/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 29/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 13/day in 2026)

    -5
    2017
    2025-07-27 16:35Codeforces Round 1039 (Div. 2)760-362022
    2025-07-22 16:35Educational Codeforces Round 181 (Rated for Div. 2)240+352058
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)1343-192023
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)1664-832042
    2025-05-11 17:05Codeforces Round 1024 (Div. 1)447-22125
    2024-12-03 08:25Codeforces Round 990 (Div. 1)387-32127
    2024-12-02 16:35Educational Codeforces Round 172 (Rated for Div. 2)73+822130