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Coast23

Open on Codeforces · Unique solved

Rating2177· 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
17
Unique solved
225
Submissions (all)
522
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.

  • Unrated20
  • 800–89940
  • 900–9996
  • 1000–10998
  • 1100–119913
  • 1200–129915
  • 1300–139915

Solved by topic

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

  • greedy109
  • math82
  • constructive algorithms52
  • dp47
  • brute force42
  • data structures40
  • implementation

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
2026-02-11 17:35Codeforces Round 1079 (Div. 1)82+2212177
2026-01-29 17:35Codeforces Round 1077 (Div. 1)724-911956
2026-01-23 16:35Codeforces Round 1075 (Div. 2)797-532047
2026-01-17 17:35Codeforces Round 1073 (Div. 1)554-192100
2025-12-05 16:35Codeforces Round 1068 (Div. 2)43
1400–1499
14
  • 1500–15997
  • 1600–169912
  • 1700–17998
  • 1800–189915
  • 1900–199916
  • 2000–20997
  • 2100–21996
  • 2200–22995
  • 2300–23996
  • 2400–24995
  • 2500–25992
  • 2600–26993
  • 2800–28991
  • 3200–32991
  • 40
  • sortings35
  • binary search27
  • strings21
  • graphs19
  • two pointers17
  • number theory16
  • dfs and similar15
  • bitmasks15
  • trees14
  • combinatorics14
  • games13
  • interactive9
  • dsu9
  • divide and conquer7
  • geometry6
  • shortest paths6
  • probabilities4
  • schedules3
  • graph matchings2
  • expression parsing2
  • ternary search2
  • Other (3 tags)4
  • 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 5/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 27/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 12/day in 2026)

    +115
    2119
    2025-10-19 16:35Codeforces Round 1060 (Div. 2)1262-792004
    2025-10-10 16:50Codeforces Round 1057 (Div. 2)35+1612083
    2025-09-17 16:35Codeforces Round 1051 (Div. 2)239+941922
    2025-09-15 16:35Educational Codeforces Round 182 (Rated for Div. 2)187+1521828
    2025-07-27 16:35Codeforces Round 1039 (Div. 2)1095+551676
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)1691+881621
    2025-07-17 16:50Codeforces Round 1037 (Div. 3)3988-11533