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Betwixt

Open on Codeforces · Unique solved

Rating2430· 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
8
Unique solved
56
Submissions (all)
181
Years with activity
2026–2026

Solved by problem rating

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

  • Unrated14
  • 800–8998
  • 900–9992
  • 1000–10991
  • 1100–11991
  • 1200–12992
  • 1300–13995

Solved by topic

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

  • greedy22
  • math21
  • constructive algorithms15
  • dp14
  • implementation11
  • *special9
  • trees

Rating changes

2026

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2026

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)92+942430
2026-04-13 16:35Codeforces Round 1093 (Div. 1)48+1932336
2026-04-07 16:50Codeforces Round 1091 (Div. 2) and CodeCraft 2620+2142143
2026-03-29 16:50Codeforces Round 1089 (Div. 2)881+641929
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)
1400–1499
1
  • 1600–16993
  • 1700–17992
  • 1800–18994
  • 1900–19991
  • 2000–20992
  • 2100–21992
  • 2200–22993
  • 2300–23991
  • 2400–24991
  • 2600–26991
  • 2800–28991
  • 3500–35991
  • 7
  • data structures7
  • binary search7
  • brute force7
  • number theory7
  • dfs and similar5
  • graphs5
  • sortings5
  • interactive4
  • games4
  • divide and conquer3
  • dsu3
  • bitmasks3
  • combinatorics3
  • strings3
  • probabilities2
  • chinese remainder theorem1
  • graph matchings1
  • hashing1
  • string suffix structures1
  • matrices1
  • Jun
    Jul
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    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
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    LessMore (max 30/day in 2026)

    204
    +324
    1865
    2026-03-21 16:35Codeforces Round 1087 (Div. 2)262+3521541
    2026-03-14 16:35Codeforces Round 1086 (Div. 2)178+5441189
    2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)808+645645