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ddh123

Open on Codeforces · Unique solved

Rating2146· 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
57
Unique solved
330
Submissions (all)
670
Years with activity
2023–2025

Solved by problem rating

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

  • Unrated2
  • 800–89958
  • 900–99915
  • 1000–109916
  • 1100–119918
  • 1200–129916
  • 1300–139912

Solved by topic

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

  • greedy149
  • math132
  • constructive algorithms104
  • dp79
  • brute force64
  • implementation58
  • data structures

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1220-652146
2025-11-16 16:35Codeforces Round 1064 (Div. 1)436-242211
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)529-112235
2025-10-12 17:05Codeforces Round 1058 (Div. 1)167+1042246
2025-08-28 17:35Codeforces Round 1046 (Div. 1)
1400–1499
12
  • 1500–159910
  • 1600–16999
  • 1700–179913
  • 1800–18998
  • 1900–199913
  • 2000–209912
  • 2100–219912
  • 2200–22997
  • 2300–23997
  • 2400–24993
  • 2500–259914
  • 2600–269911
  • 2700–27999
  • 2800–28998
  • 2900–29997
  • 3000–309913
  • 3100–31997
  • 3200–32995
  • 3300–33997
  • 3400–34991
  • 3500–35995
  • 55
  • graphs46
  • sortings40
  • number theory37
  • combinatorics37
  • dfs and similar34
  • bitmasks33
  • binary search30
  • trees29
  • strings22
  • games22
  • two pointers20
  • dsu13
  • probabilities12
  • interactive10
  • flows9
  • divide and conquer9
  • shortest paths7
  • geometry6
  • hashing5
  • matrices5
  • graph matchings3
  • Other (6 tags)10
  • 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 13/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 23/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 13/day in 2025)

    911
    -116
    2142
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)489+12258
    2025-05-31 16:35Codeforces Round 1028 (Div. 1)207+832257
    2025-05-11 17:05Codeforces Round 1024 (Div. 1)300+432174
    2025-04-28 16:35Educational Codeforces Round 178 (Rated for Div. 2)146+292131
    2025-04-26 11:35Codeforces Round 1021 (Div. 1)443-492102
    2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)905-242151
    2025-03-23 08:05Codeforces Round 1012 (Div. 1)409-432175