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Top rated · Stats

NKheyuxiang

Open on Codeforces · Unique solved

Rating2938· 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
34
Unique solved
426
Submissions (all)
906
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.

  • 800–89936
  • 900–9997
  • 1000–109912
  • 1100–119911
  • 1200–12999
  • 1300–13998
  • 1400–149924

Solved by topic

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

  • greedy189
  • math166
  • dp129
  • constructive algorithms128
  • data structures112
  • brute force84
  • implementation

Rating changes

2022

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

Jan
Feb
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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
2026-01-07 17:35Hello 202615+1262938
2025-12-06 10:15Codeforces Round 1069 (Div. 1)22+542812
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)77+102758
2025-10-12 17:05Codeforces Round 1058 (Div. 1)62+282748
2025-09-24 14:50Codeforces Round 1053 (Div. 1)64
1500–1599
9
  • 1600–169913
  • 1700–179915
  • 1800–189911
  • 1900–199920
  • 2000–209912
  • 2100–219920
  • 2200–229911
  • 2300–239916
  • 2400–249912
  • 2500–259922
  • 2600–269916
  • 2700–27997
  • 2800–289914
  • 2900–299915
  • 3000–309911
  • 3100–319916
  • 3200–329921
  • 3300–339918
  • 3400–349910
  • 3500–359930
  • 78
  • graphs63
  • binary search63
  • sortings54
  • trees53
  • combinatorics52
  • dfs and similar48
  • bitmasks47
  • number theory45
  • two pointers31
  • divide and conquer30
  • strings27
  • games19
  • dsu18
  • interactive17
  • probabilities16
  • flows16
  • geometry11
  • graph matchings9
  • shortest paths9
  • fft8
  • hashing7
  • Other (7 tags)23
  • 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 9/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 17/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 12/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 34/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 8/day in 2026)

    +45
    2720
    2025-05-11 17:05Codeforces Round 1024 (Div. 1)55+652675
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)124+262610
    2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)79+1052584
    2024-12-28 17:35Good Bye 2024: 2025 is NEAR408-282479
    2024-12-19 17:35Codeforces Global Round 28173+312507
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)476-612476
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)83+1012537