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StarLzy

Open on Codeforces · Unique solved

Rating2447· 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
56
Unique solved
681
Submissions (all)
1,412
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated225
  • 800–89983
  • 900–99915
  • 1000–109916
  • 1100–119931
  • 1200–129923
  • 1300–139923

Solved by topic

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

  • greedy231
  • math181
  • constructive algorithms129
  • implementation113
  • data structures111
  • brute force108

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)138+522447
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)192+82395
2026-01-07 17:35Hello 2026260+342387
2025-12-27 17:35Good Bye 202581+1762353
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)490
1400–1499
20
  • 1500–159925
  • 1600–169919
  • 1700–179922
  • 1800–189922
  • 1900–199925
  • 2000–209920
  • 2100–219916
  • 2200–229922
  • 2300–239917
  • 2400–249918
  • 2500–259913
  • 2600–26997
  • 2700–27998
  • 2800–28994
  • 3000–30992
  • 3100–31991
  • 3200–32992
  • 3300–33992
  • dp
    96
  • binary search72
  • sortings59
  • number theory52
  • bitmasks50
  • dfs and similar42
  • combinatorics41
  • trees41
  • two pointers37
  • graphs36
  • strings31
  • divide and conquer24
  • games24
  • interactive21
  • dsu17
  • geometry14
  • string suffix structures13
  • hashing10
  • probabilities7
  • shortest paths6
  • ternary search6
  • graph matchings5
  • Other (7 tags)21
  • 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 27/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 29/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 34/day in 2026)

    +29
    2177
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)975-522148
    2025-10-24 16:35Codeforces Round 1061 (Div. 2)33+1032200
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)620-472097
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)612+202144
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)498+52124
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)892-92119
    2025-05-11 17:05Codeforces Round 1024 (Div. 1)632-642128