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BLIZZARD

Open on Codeforces · Unique solved

Rating2358· 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
25
Unique solved
138
Submissions (all)
404
Years with activity
2010–2025

Solved by problem rating

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

  • Unrated11
  • 800–8999
  • 900–9997
  • 1000–10996
  • 1100–11996
  • 1200–12997
  • 1300–139912

Solved by topic

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

  • implementation57
  • greedy33
  • constructive algorithms21
  • math19
  • *special18
  • data structures16

Rating changes

2010

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2010

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-10-15 16:50Codeforces Global Round 23291+332358
2022-01-03 16:50Hello 2022465-112325
2019-03-08 11:35Codeforces Round 545 (Div. 1)18+2062336
2019-02-23 12:20Codeforces Round 541 (Div. 2)52+822130
2018-04-29 15:45Codeforces Round 477 (rated, Div. 1, based on VK Cup 2018 Round 3)159
1400–1499
13
  • 1500–159911
  • 1600–169914
  • 1700–17999
  • 1800–18997
  • 1900–19996
  • 2000–20998
  • 2100–21991
  • 2200–22994
  • 2300–23993
  • 2400–24991
  • 2500–25992
  • 3400–34991
  • dp
    15
  • brute force15
  • sortings12
  • binary search11
  • dfs and similar9
  • strings9
  • graphs6
  • interactive5
  • trees5
  • two pointers5
  • hashing4
  • dsu4
  • number theory3
  • geometry2
  • ternary search1
  • bitmasks1
  • shortest paths1
  • string suffix structures1
  • divide and conquer1
  • meet-in-the-middle1
  • combinatorics1
  • expression parsing1
  • 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.

    2011

    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.

    2012

    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.

    2013

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
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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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    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
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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.

    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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    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.

    2018

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

    Jan
    Feb
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    Apr
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    Jun
    Jul
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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
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    Apr
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    Jun
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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
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    Jun
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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
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    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
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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
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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.

    2025

    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.

    May
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    Dec

    LessMore (max 34/day in 2010)

    2011

    Download PNG

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

    Jan
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    LessMore (max 8/day in 2011)

    2012

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2012)

    2013

    Download PNG

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

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    LessMore (max 7/day in 2013)

    2014

    Download PNG

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

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    LessMore (max 2/day in 2014)

    2015

    Download PNG

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

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    LessMore (max 22/day in 2015)

    2016

    Download PNG

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

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    LessMore (max 8/day in 2016)

    2017

    Download PNG

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

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    LessMore (max 1/day in 2017)

    2018

    Download PNG

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

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    LessMore (max 5/day in 2018)

    2019

    Download PNG

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

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    LessMore (max 10/day in 2019)

    2020

    Download PNG

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

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    LessMore (max 2/day in 2020)

    2021

    Download PNG

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

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    LessMore (max 4/day in 2021)

    2022

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

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    LessMore (max 11/day in 2022)

    2024

    Download PNG

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

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    LessMore (max 1/day in 2024)

    2025

    Download PNG

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

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    LessMore (max 10/day in 2025)

    +61
    2048
    2016-04-24 18:35VK Cup 2016 - Round 2103-281987
    2016-03-28 18:35VK Cup 2016 - Round 149+502015
    2015-12-30 18:05Good Bye 2015769-161965
    2015-06-06 15:30Looksery Cup 20151443-911981
    2015-04-17 18:30VK Cup 2015 - Round 2126+322072
    2015-04-04 19:05ZeptoLab Code Rush 2015271+1762040
    2015-03-21 16:00VK Cup 2015 - Round 1148+1201864