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Top rated · Stats

yeminghan

Open on Codeforces · Unique solved

Rating2829· International 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
53
Unique solved
1,168
Submissions (all)
2,241
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated82
  • 800–899168
  • 900–99943
  • 1000–109933
  • 1100–119953
  • 1200–129940
  • 1300–139954

Solved by topic

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

  • greedy487
  • math416
  • implementation300
  • constructive algorithms274
  • dp260
  • brute force249
  • data structures

Rating changes

2022

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)26+782829
2026-01-17 17:35Codeforces Round 1073 (Div. 1)91-112751
2026-01-07 17:35Hello 2026186-602762
2025-12-27 17:35Good Bye 202597-82822
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)79
1400–1499
42
  • 1500–159950
  • 1600–169943
  • 1700–179953
  • 1800–189951
  • 1900–199960
  • 2000–209945
  • 2100–219941
  • 2200–229941
  • 2300–239937
  • 2400–249932
  • 2500–259925
  • 2600–269931
  • 2700–279916
  • 2800–289923
  • 2900–299917
  • 3000–309922
  • 3100–31999
  • 3200–329916
  • 3300–339920
  • 3400–34998
  • 3500–359913
  • 243
  • binary search161
  • sortings160
  • dfs and similar132
  • graphs131
  • trees120
  • bitmasks113
  • combinatorics105
  • number theory105
  • strings93
  • two pointers89
  • dsu65
  • interactive54
  • *special44
  • divide and conquer43
  • games42
  • probabilities31
  • geometry31
  • shortest paths31
  • hashing23
  • flows16
  • graph matchings14
  • Other (10 tags)46
  • 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.

    2023

    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.

    2024

    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.

    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 32/day in 2022)

    2023

    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 19/day in 2023)

    2024

    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 28/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 24/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 28/day in 2026)

    -1
    2830
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)34+622831
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)73+162769
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)108-322753
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)41+692785
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)170-692716
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)59+422785
    2025-07-31 17:35Codeforces Round 1040 (Div. 1)17+1762743