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duhless

Open on Codeforces · Unique solved

Rating2169· 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
56
Unique solved
469
Submissions (all)
1,022
Years with activity
2022–2025

Solved by problem rating

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

  • Unrated27
  • 800–899124
  • 900–99923
  • 1000–109928
  • 1100–119931
  • 1200–129926
  • 1300–139930

Solved by topic

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

  • greedy209
  • math198
  • implementation141
  • constructive algorithms118
  • brute force102
  • sortings84
  • dp

Rating changes

2022

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-06-06 16:35Codeforces Round 951 (Div. 2)51+972169
2023-12-24 16:35Codeforces Round 917 (Div. 2)19+2182072
2023-12-19 17:05Codeforces Round 916 (Div. 3)3+2941854
2023-09-25 16:35Codeforces Round 899 (Div. 2)237+2631560
2023-09-24 16:35Educational Codeforces Round 155 (Rated for Div. 2)
1400–1499
29
  • 1500–159933
  • 1600–169925
  • 1700–179922
  • 1800–189919
  • 1900–199912
  • 2000–20997
  • 2100–21999
  • 2200–22996
  • 2300–23999
  • 2400–24994
  • 2500–25993
  • 2600–26992
  • 69
  • binary search58
  • number theory52
  • data structures48
  • strings38
  • combinatorics34
  • two pointers33
  • bitmasks33
  • dfs and similar32
  • *special32
  • graphs29
  • trees26
  • geometry20
  • games14
  • dsu10
  • interactive9
  • probabilities6
  • shortest paths6
  • hashing4
  • divide and conquer4
  • schedules2
  • expression parsing2
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 18/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
    Nov
    Dec

    LessMore (max 35/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 7/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 3/day in 2025)

    11896
    -154
    1297
    2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)3782+51451
    2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)4833-271446
    2023-08-17 16:35Educational Codeforces Round 153 (Rated for Div. 2)3238+161473
    2023-08-15 16:35Codeforces Round 893 (Div. 2)5104-291457
    2023-08-12 16:35Codeforces Round 892 (Div. 2)2508+421486
    2023-07-29 17:05Codeforces Round 889 (Div. 2)2086+591444
    2023-07-25 16:50Codeforces Round 888 (Div. 3)5717-491385