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Top rated · Stats

AEM_YNxingkong

Open on Codeforces · Unique solved

Rating2152· 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
48
Unique solved
655
Submissions (all)
2,240
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated3
  • 800–89946
  • 900–99912
  • 1000–10994
  • 1100–119919
  • 1200–129913
  • 1300–139914

Solved by topic

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

  • data structures225
  • dp211
  • greedy201
  • math198
  • constructive algorithms131
  • brute force112
  • trees

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-04-26 11:35Codeforces Round 1021 (Div. 1)241+492152
2025-03-10 17:15Codeforces Round 1008 (Div. 1)425+262103
2025-02-28 16:50Codeforces Round 1007 (Div. 2)167+532077
2025-02-18 16:35Educational Codeforces Round 174 (Rated for Div. 2)694-352024
2025-02-16 16:35Codeforces Round 1005 (Div. 2)
1400–1499
7
  • 1500–159911
  • 1600–169914
  • 1700–179914
  • 1800–189925
  • 1900–199932
  • 2000–209931
  • 2100–219932
  • 2200–229938
  • 2300–239933
  • 2400–249938
  • 2500–259945
  • 2600–269937
  • 2700–279934
  • 2800–289928
  • 2900–299930
  • 3000–309927
  • 3100–319921
  • 3200–329910
  • 3300–339912
  • 3400–34999
  • 3500–359916
  • 102
  • implementation92
  • binary search84
  • dfs and similar78
  • graphs74
  • combinatorics72
  • sortings66
  • bitmasks63
  • strings55
  • divide and conquer50
  • number theory46
  • two pointers42
  • dsu37
  • hashing30
  • shortest paths21
  • probabilities19
  • games18
  • string suffix structures18
  • matrices14
  • geometry12
  • interactive10
  • flows7
  • Other (7 tags)24
  • 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 23/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 63/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 67/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 26/day in 2026)

    183
    +56
    2059
    2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)3251-1232003
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)770-122126
    2024-12-03 08:25Codeforces Round 990 (Div. 1)162+1322138
    2024-11-15 14:35Codeforces Round 987 (Div. 2)184+702006
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)1637-571936
    2024-11-01 16:35Codeforces Round 983 (Div. 2)1516-811993
    2024-10-28 16:35Educational Codeforces Round 171 (Rated for Div. 2)67+1252074