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Top rated · Stats

kefaa

Open on Codeforces · Unique solved

Rating2140· 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
194
Unique solved
2,902
Submissions (all)
7,155
Years with activity
2014–2026

Solved by problem rating

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

  • Unrated667
  • 800–899222
  • 900–99997
  • 1000–1099138
  • 1100–1199164
  • 1200–1299159
  • 1300–1399142

Solved by topic

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

  • implementation929
  • math637
  • greedy601
  • brute force438
  • dp377
  • constructive algorithms348
  • data structures

Rating changes

2014

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2014

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)734+62140
2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)967-412134
2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)370+422175
2024-04-27 16:35Codeforces Round 941 (Div. 1)824-642133
2024-04-21 16:50Codeforces Round 940 (Div. 2) and CodeCraft-23
1400–1499
142
  • 1500–1599153
  • 1600–1699174
  • 1700–1799139
  • 1800–1899101
  • 1900–1999128
  • 2000–2099107
  • 2100–219985
  • 2200–229976
  • 2300–239963
  • 2400–249945
  • 2500–259940
  • 2600–269920
  • 2700–279911
  • 2800–28998
  • 2900–299912
  • 3000–30995
  • 3100–31992
  • 3200–32991
  • 3300–33991
  • 316
  • sortings275
  • binary search238
  • strings205
  • dfs and similar201
  • graphs195
  • number theory172
  • trees135
  • two pointers113
  • combinatorics109
  • bitmasks96
  • geometry68
  • *special68
  • dsu64
  • shortest paths58
  • hashing49
  • divide and conquer42
  • games34
  • probabilities26
  • interactive18
  • matrices15
  • flows13
  • Other (9 tags)53
  • 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.

    2015

    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.

    2016

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    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.

    2017

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    Aug
    Sep
    Oct
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    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.

    2018

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

    Jan
    Feb
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    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.

    2019

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    Sep
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    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.

    2020

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    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.

    2021

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    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
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    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
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    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
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    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
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    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
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    Aug
    Sep
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    Dec

    LessMore (max 65/day in 2014)

    2015

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 54/day in 2015)

    2016

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 51/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 45/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 33/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 19/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2021)

    2022

    Download PNG

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

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    LessMore (max 51/day in 2022)

    2023

    Download PNG

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

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    LessMore (max 20/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 18/day in 2024)

    2026

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 1/day in 2026)

    12
    +186
    2197
    2024-04-06 17:35Codeforces Global Round 25355+1372011
    2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)1013+521874
    2024-03-22 16:35Codeforces Round 936 (Div. 2)13364-2361822
    2024-03-16 17:00Codeforces Round 934 (Div. 1)446+662058
    2024-03-05 16:35Codeforces Round 932 (Div. 2)968-371992
    2024-02-17 17:35think-cell Round 1632+422029
    2024-01-13 16:35Codeforces Round 919 (Div. 2)1159-611987