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Top rated · Stats

dzy493941464

Open on Codeforces · Unique solved

Rating2349· 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
13
Unique solved
270
Submissions (all)
682
Years with activity
2013–2021

Solved by problem rating

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

  • Unrated79
  • 800–89910
  • 900–9993
  • 1000–10995
  • 1100–11995
  • 1200–12996
  • 1300–13998

Solved by topic

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

  • dp51
  • data structures50
  • implementation49
  • math46
  • greedy41
  • graphs22
  • binary search

Rating changes

2013

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2013

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2015-06-27 16:10Codeforces Round 310 (Div. 1)49+1352349
2014-09-28 18:05Codeforces Round 270130+1082214
2014-09-20 15:00Codeforces Round 268 (Div. 1)284-782106
2014-09-07 17:30Codeforces Round 265 (Div. 1)110+792184
2014-08-26 16:00Codeforces Round 263 (Div. 1)196+49
1400–1499
9
  • 1500–159914
  • 1600–169910
  • 1700–17993
  • 1800–18997
  • 1900–199910
  • 2000–209915
  • 2100–21997
  • 2200–229914
  • 2300–239910
  • 2400–249915
  • 2500–259915
  • 2600–26999
  • 2700–27994
  • 2800–28992
  • 2900–29994
  • 3000–30994
  • 3100–31992
  • 20
  • trees20
  • dfs and similar18
  • number theory17
  • combinatorics17
  • brute force17
  • constructive algorithms17
  • sortings15
  • bitmasks11
  • strings8
  • dsu8
  • matrices7
  • geometry7
  • probabilities6
  • two pointers5
  • shortest paths4
  • games3
  • chinese remainder theorem2
  • graph matchings2
  • hashing2
  • divide and conquer2
  • string suffix structures1
  • Other (5 tags)5
  • 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.

    2014

    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.

    2015

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

    Jan
    Feb
    Mar
    Apr
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    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.

    2016

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

    Jan
    Feb
    Mar
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    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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    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.

    2020

    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.

    2021

    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
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    LessMore (max 14/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 29/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 33/day in 2015)

    2016

    Download PNG

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

    Jan
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    LessMore (max 21/day in 2016)

    2018

    Download PNG

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

    Jan
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    LessMore (max 3/day in 2018)

    2020

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 5/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 8/day in 2021)

    2105
    2014-08-08 17:30Codeforces Round 260 (Div. 1)439-932056
    2014-08-01 17:30Codeforces Round 259 (Div. 1)4+1982149
    2014-06-01 15:00Codeforces Round 250 (Div. 1)57+1971951
    2014-04-06 17:40Codeforces Round 240 (Div. 2)37+921754
    2014-03-22 17:30Codeforces Round 238 (Div. 1)567-681662
    2013-12-30 17:30Good Bye 2013644+1581730
    2013-04-19 17:30Codeforces Round 180 (Div. 2)326+601572