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volcano_2025

Open on Codeforces · Unique solved

Rating2450· Grandmaster

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
11
Unique solved
670
Submissions (all)
1,487
Years with activity
2025–2026

Solved by problem rating

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

  • Unrated121
  • 800–89949
  • 900–99912
  • 1000–109917
  • 1100–119922
  • 1200–129913
  • 1300–139917

Solved by topic

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

  • greedy204
  • math188
  • dp163
  • data structures159
  • constructive algorithms116
  • brute force96
  • implementation

Rating changes

2025

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2025

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)364-402450
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)198+212490
2025-09-24 14:50Codeforces Round 1053 (Div. 1)86+1062469
2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)707-622363
2025-08-28 17:35Codeforces Round 1046 (Div. 1)
1400–1499
29
  • 1500–159918
  • 1600–169911
  • 1700–179918
  • 1800–189913
  • 1900–199915
  • 2000–209916
  • 2100–219915
  • 2200–22999
  • 2300–23999
  • 2400–2499135
  • 2500–259950
  • 2600–269929
  • 2700–279914
  • 2800–289914
  • 2900–29996
  • 3000–30995
  • 3100–31995
  • 3200–32995
  • 3300–33991
  • 3500–35992
  • 80
  • binary search78
  • sortings73
  • graphs71
  • dfs and similar69
  • number theory59
  • trees56
  • combinatorics54
  • two pointers50
  • bitmasks48
  • divide and conquer42
  • dsu31
  • strings26
  • interactive25
  • shortest paths23
  • hashing23
  • probabilities20
  • geometry17
  • games15
  • graph matchings10
  • fft10
  • flows7
  • Other (8 tags)37
  • 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 64/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 23/day in 2026)

    366
    -61
    2425
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)69+1802486
    2025-07-22 16:35Educational Codeforces Round 181 (Rated for Div. 2)11+2292306
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)675+1452077
    2025-07-17 16:50Codeforces Round 1037 (Div. 3)2+4771932
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)74+6431455
    2025-07-05 16:35Codeforces Round 1035 (Div. 2)52+812812