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Top rated · Stats

wakaka

Open on Codeforces · Unique solved

Rating2425· Grandmaster

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
51
Unique solved
2,811
Submissions (all)
5,968
Years with activity
2012–2026

Solved by problem rating

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

  • Unrated604
  • 800–899199
  • 900–99958
  • 1000–109960
  • 1100–119975
  • 1200–129979
  • 1300–139994

Solved by topic

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

  • greedy819
  • math801
  • dp593
  • implementation535
  • constructive algorithms490
  • data structures483

Rating changes

2012

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2012

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)562-552425
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)308-222480
2025-07-31 17:35Codeforces Round 1040 (Div. 1)193-22502
2025-05-11 17:05Codeforces Round 1024 (Div. 1)160+52504
2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
1400–1499
71
  • 1500–159975
  • 1600–169992
  • 1700–179989
  • 1800–189998
  • 1900–1999118
  • 2000–2099123
  • 2100–2199103
  • 2200–2299115
  • 2300–239998
  • 2400–2499139
  • 2500–2599132
  • 2600–269980
  • 2700–279981
  • 2800–289966
  • 2900–299937
  • 3000–309934
  • 3100–319929
  • 3200–329922
  • 3300–339922
  • 3400–34999
  • 3500–35999
  • brute force
    448
  • binary search296
  • graphs296
  • dfs and similar267
  • trees258
  • sortings257
  • combinatorics213
  • number theory207
  • bitmasks203
  • strings159
  • two pointers153
  • dsu120
  • divide and conquer105
  • interactive76
  • geometry73
  • games71
  • hashing66
  • probabilities56
  • shortest paths53
  • fft37
  • flows37
  • matrices32
  • Other (11 tags)117
  • 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.

    2013

    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.

    2014

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

    Jan
    Feb
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    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
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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.

    2016

    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.

    2017

    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.

    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
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    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
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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
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    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
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    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
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    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
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    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
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    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
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    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.

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    LessMore (max 14/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 28/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 27/day in 2014)

    2015

    Download PNG

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

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    LessMore (max 6/day in 2015)

    2016

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

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    2017

    Download PNG

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

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    LessMore (max 54/day in 2017)

    2018

    Download PNG

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

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    2019

    Download PNG

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

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    2020

    Download PNG

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

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    2021

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

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    2022

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

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    2023

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

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    2024

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

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    LessMore (max 23/day in 2024)

    2025

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

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    LessMore (max 23/day in 2025)

    2026

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

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    LessMore (max 12/day in 2026)

    347
    -35
    2499
    2019-12-29 17:05Good Bye 201946+1162534
    2019-05-04 19:05Codeforces Round 557 (Div. 1) [based on Forethought Future Cup - Final Round]85+62418
    2018-11-04 20:40Lyft Level 5 Challenge 2018 - Final Round (Open Div. 1)66-52412
    2018-10-21 10:10Codeforces Round 517 (Div. 1, based on Technocup 2019 Elimination Round 2)51+542417
    2018-10-07 19:05Lyft Level 5 Challenge 2018 - Elimination Round276-502363
    2018-09-02 16:35Manthan, Codefest 18 (rated, Div. 1 + Div. 2)52+762413
    2018-08-19 15:50Codeforces Round 505 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final)96+562337