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kylin0610

Open on Codeforces · Unique solved

Rating2124· 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
19
Unique solved
256
Submissions (all)
509
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.

  • Unrated17
  • 800–89947
  • 900–99910
  • 1000–10998
  • 1100–119917
  • 1200–129915
  • 1300–139916

Solved by topic

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

  • greedy134
  • math105
  • constructive algorithms81
  • dp58
  • implementation54
  • brute force47
  • binary search

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
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)488+222124
2026-03-29 16:50Codeforces Round 1089 (Div. 2)281+82102
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)1246-582094
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)327+352152
2026-01-17 17:35Codeforces Round 1073 (Div. 1)
1400–1499
14
  • 1500–15998
  • 1600–169910
  • 1700–179910
  • 1800–189916
  • 1900–199910
  • 2000–20999
  • 2100–219912
  • 2200–229912
  • 2300–239910
  • 2400–24996
  • 2500–25995
  • 2600–26991
  • 2700–27991
  • 2900–29992
  • 34
  • data structures34
  • sortings33
  • number theory27
  • graphs25
  • bitmasks19
  • two pointers18
  • interactive18
  • trees18
  • combinatorics18
  • dfs and similar18
  • strings16
  • games11
  • divide and conquer10
  • geometry10
  • dsu9
  • ternary search6
  • shortest paths6
  • graph matchings5
  • hashing3
  • matrices2
  • flows2
  • Other (4 tags)5
  • 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 38/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 25/day in 2026)

    516
    -12
    2117
    2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)112+572129
    2025-12-27 17:35Good Bye 20251847-692072
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)750-982141
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)180+962239
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)559+392143
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)591-312104
    2025-08-26 16:35Codeforces Round 1045 (Div. 2)73+942135