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diss_quack

Open on Codeforces · Unique solved

Rating2055· Candidate 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
26
Unique solved
535
Submissions (all)
1,503
Years with activity
2020–2026

Solved by problem rating

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

  • Unrated273
  • 800–89946
  • 900–9999
  • 1000–109914
  • 1100–119916
  • 1200–129911
  • 1300–139918

Solved by topic

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

  • greedy143
  • math114
  • constructive algorithms84
  • implementation76
  • dp65
  • brute force53
  • data structures

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-05-06 08:35Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)476-962055
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)746-172151
2026-01-29 17:35Codeforces Round 1077 (Div. 1)305+182168
2026-01-17 17:35Codeforces Round 1073 (Div. 1)442+22150
2025-12-27 17:35Good Bye 2025
1400–1499
11
  • 1500–159910
  • 1600–16998
  • 1700–17998
  • 1800–189922
  • 1900–199919
  • 2000–209913
  • 2100–219913
  • 2200–229912
  • 2300–239910
  • 2400–24995
  • 2500–25996
  • 2600–26993
  • 2700–27991
  • 2800–28993
  • 3100–31991
  • 3200–32991
  • 3300–33992
  • 43
  • binary search37
  • sortings35
  • number theory29
  • bitmasks26
  • two pointers23
  • trees23
  • combinatorics23
  • graphs21
  • strings21
  • games19
  • dfs and similar17
  • interactive15
  • dsu11
  • divide and conquer10
  • probabilities9
  • geometry6
  • shortest paths3
  • hashing3
  • chinese remainder theorem2
  • matrices2
  • ternary search2
  • Other (6 tags)7
  • 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 11/day in 2020)

    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 14/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 36/day in 2024)

    2025

    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 34/day in 2025)

    2026

    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 27/day in 2026)

    404
    +81
    2148
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)659+332067
    2025-12-06 10:15Codeforces Round 1069 (Div. 1)647-842034
    2025-10-10 16:50Codeforces Round 1057 (Div. 2)57+1112118
    2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)608-182007
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)1113-112025
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)1005+32036
    2025-09-17 16:35Codeforces Round 1051 (Div. 2)130+922033