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Kita

Open on Codeforces · Unique solved

Rating2135· 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
116
Unique solved
567
Submissions (all)
2,181
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.

  • Unrated4
  • 800–899161
  • 900–99932
  • 1000–109934
  • 1100–119941
  • 1200–129924
  • 1300–139936

Solved by topic

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

  • greedy296
  • math252
  • constructive algorithms178
  • implementation169
  • brute force124
  • dp84
  • sortings

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
2024-12-28 17:35Good Bye 2024: 2025 is NEAR469+762135
2024-10-14 16:35Educational Codeforces Round 170 (Rated for Div. 2)275+262059
2024-08-20 16:35Codeforces Round 967 (Div. 2)457+32033
2024-08-15 16:35Educational Codeforces Round 169 (Rated for Div. 2)1214-592030
2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)
1400–1499
29
  • 1500–159927
  • 1600–169928
  • 1700–179937
  • 1800–189919
  • 1900–199926
  • 2000–209932
  • 2100–219919
  • 2200–22999
  • 2300–23992
  • 2400–24994
  • 2500–25991
  • 2700–27992
  • 77
  • data structures72
  • binary search71
  • number theory52
  • strings50
  • bitmasks48
  • two pointers41
  • dfs and similar39
  • graphs37
  • combinatorics32
  • trees20
  • games19
  • dsu17
  • interactive15
  • geometry12
  • divide and conquer8
  • shortest paths8
  • probabilities6
  • hashing6
  • flows5
  • *special4
  • chinese remainder theorem3
  • Other (6 tags)9
  • 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 26/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 52/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 26/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 35/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 6/day in 2025)

    2112
    -102
    2089
    2024-08-04 16:35Codeforces Round 963 (Div. 2)23+1602191
    2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)391+282031
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)1230-102003
    2024-04-13 16:35Codeforces Round 939 (Div. 2)532-112013
    2024-04-12 16:35Educational Codeforces Round 164 (Rated for Div. 2)642-202024
    2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)726+332044
    2024-02-29 16:35Codeforces Round 930 (Div. 1)357+802011