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CaveNightingale

Open on Codeforces · Unique solved

Rating2125· 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
66
Unique solved
662
Submissions (all)
1,562
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated174
  • 800–899109
  • 900–99926
  • 1000–109925
  • 1100–119939
  • 1200–129932
  • 1300–139928

Solved by topic

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

  • greedy260
  • math214
  • implementation155
  • constructive algorithms140
  • brute force129
  • dp102
  • data structures

Rating changes

2022

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

Jan
Feb
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May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-10-26 16:35Codeforces Round 982 (Div. 2)64+822125
2024-09-29 17:35Codeforces Round 976 (Div. 2) and Divide By Zero 9.047+1632043
2024-09-27 16:05Codeforces Round 975 (Div. 1)973-411880
2024-08-25 16:35Codeforces Round 968 (Div. 2)2352-891921
2024-08-20 16:35Codeforces Round 967 (Div. 2)334
1400–1499
24
  • 1500–159915
  • 1600–169917
  • 1700–179925
  • 1800–189929
  • 1900–199928
  • 2000–209910
  • 2100–219919
  • 2200–229915
  • 2300–239912
  • 2400–249915
  • 2500–25999
  • 2600–26993
  • 2700–27994
  • 2800–28991
  • 2900–29991
  • 3000–30991
  • 3100–31991
  • 79
  • binary search76
  • sortings74
  • strings49
  • number theory46
  • bitmasks42
  • graphs42
  • dfs and similar42
  • two pointers35
  • trees34
  • *special34
  • combinatorics30
  • games21
  • dsu20
  • shortest paths15
  • interactive13
  • probabilities12
  • geometry12
  • divide and conquer11
  • hashing9
  • flows5
  • chinese remainder theorem4
  • Other (7 tags)14
  • Jun
    Jul
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    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.

    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
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    Dec

    LessMore (max 11/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
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    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
    Oct
    Nov
    Dec

    LessMore (max 30/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
    Aug
    Sep
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    Dec

    LessMore (max 1/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
    Jul
    Aug
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    Oct
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    LessMore (max 4/day in 2026)

    +33
    2010
    2024-08-15 16:35Educational Codeforces Round 169 (Rated for Div. 2)1141-381977
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)1000+142015
    2024-08-10 16:35Codeforces Round 965 (Div. 2)413+272001
    2024-08-04 16:35Codeforces Round 963 (Div. 2)224+811974
    2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)2271-631893
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)1020+301956
    2024-07-23 16:35Codeforces Round 961 (Div. 2)1669-711926