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Top rated · Stats

Alpha_Q

Open on Codeforces · Unique solved

Rating2240· 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
168
Unique solved
2,202
Submissions (all)
4,730
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.

  • Unrated668
  • 800–899165
  • 900–99959
  • 1000–109973
  • 1100–119978
  • 1200–129980
  • 1300–139983

Solved by topic

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

  • greedy538
  • math537
  • implementation490
  • constructive algorithms342
  • dp302
  • brute force285
  • 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
2026-02-23 17:05Codeforces Round 1082 (Div. 1)306+62240
2026-02-21 16:35Codeforces Round 1081 (Div. 2)15+1412234
2026-02-11 17:35Codeforces Round 1079 (Div. 1)781-1022093
2026-01-17 17:35Codeforces Round 1073 (Div. 1)685-812195
2026-01-07 17:35Hello 202668+213
1400–1499
72
  • 1500–159983
  • 1600–1699105
  • 1700–179994
  • 1800–189978
  • 1900–199988
  • 2000–209959
  • 2100–219971
  • 2200–229976
  • 2300–239942
  • 2400–249963
  • 2500–259961
  • 2600–269936
  • 2700–279930
  • 2800–289914
  • 2900–29997
  • 3000–30998
  • 3100–31993
  • 3200–32993
  • 3300–33992
  • 3500–35991
  • 248
  • binary search189
  • sortings184
  • graphs149
  • number theory139
  • dfs and similar136
  • strings130
  • combinatorics125
  • trees125
  • two pointers85
  • bitmasks85
  • geometry66
  • games49
  • dsu47
  • *special43
  • divide and conquer42
  • probabilities38
  • interactive37
  • shortest paths36
  • hashing36
  • graph matchings17
  • matrices15
  • Other (9 tags)64
  • 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
    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.

    2017

    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.

    2018

    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.

    2019

    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.

    2020

    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.

    2021

    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.

    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.

    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 2/day in 2014)

    2015

    Download PNG

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

    Jan
    Feb
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    Jun
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    Aug
    Sep
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    Dec

    LessMore (max 14/day in 2015)

    2016

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
    Jul
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    Sep
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    Dec

    LessMore (max 27/day in 2016)

    2017

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    Sep
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    LessMore (max 27/day in 2017)

    2018

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
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    Dec

    LessMore (max 31/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 14/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 36/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 32/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 77/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 41/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 107/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
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    LessMore (max 16/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
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    Jun
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    LessMore (max 7/day in 2026)

    2276
    2025-12-27 17:35Good Bye 20251751-602063
    2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)421+742123
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)3305-1632049
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)643-192212
    2025-01-04 17:05Hello 2025326+822231
    2024-12-19 17:35Codeforces Global Round 28870-252149
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)865-442174