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Nightmare05

Open on Codeforces · Unique solved

Rating2236· 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
55
Unique solved
643
Submissions (all)
1,369
Years with activity
2018–2025

Solved by problem rating

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

  • Unrated276
  • 800–89944
  • 900–99918
  • 1000–109946
  • 1100–119920
  • 1200–129932
  • 1300–139932

Solved by topic

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

  • implementation137
  • greedy133
  • math112
  • constructive algorithms55
  • sortings51
  • brute force45
  • dp

Rating changes

2018

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2019-12-17 17:35Codeforces Global Round 6110+1292236
2019-11-19 16:35Codeforces Round 601 (Div. 2)3+2392107
2019-11-16 16:35Codeforces Round 600 (Div. 2)751-71868
2019-11-13 16:35Educational Codeforces Round 76 (Rated for Div. 2)1424-641875
2019-11-01 16:35Codeforces Round 597 (Div. 2)509
1400–1499
25
  • 1500–159924
  • 1600–169919
  • 1700–179922
  • 1800–189915
  • 1900–199915
  • 2000–209913
  • 2100–21998
  • 2200–22997
  • 2300–23997
  • 2400–24993
  • 2500–25995
  • 2600–26993
  • 2700–27995
  • 2800–28991
  • 2900–29991
  • 3000–30991
  • 3200–32991
  • 42
  • binary search31
  • strings28
  • data structures26
  • graphs23
  • number theory21
  • two pointers17
  • combinatorics15
  • geometry12
  • interactive11
  • dfs and similar11
  • dsu9
  • bitmasks9
  • trees8
  • games7
  • shortest paths7
  • *special5
  • hashing5
  • flows3
  • probabilities3
  • fft3
  • divide and conquer3
  • Other (7 tags)9
  • 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.

    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.

    May
    Jun
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    Dec

    LessMore (max 25/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 31/day in 2019)

    2020

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 29/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 35/day in 2021)

    2022

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 5/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 2/day in 2023)

    2025

    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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    LessMore (max 5/day in 2025)

    +3
    1939
    2019-10-16 17:05Codeforces Global Round 51521-471936
    2019-09-19 16:35Educational Codeforces Round 73 (Rated for Div. 2)84+1091983
    2019-09-18 18:05Codeforces Round 586 (Div. 1 + Div. 2)1231-371874
    2019-09-15 12:35Codeforces Round 585 (Div. 2)836-441911
    2019-09-14 15:35Codeforces Round 584 - Dasha Code Championship - Elimination Round (rated, open for everyone, Div. 1 + Div. 2)1164-291955
    2019-09-04 11:35Codeforces Round 583 (Div. 1 + Div. 2, based on Olympiad of Metropolises)279+811984
    2019-08-20 16:35Codeforces Round 581 (Div. 2)765-71903