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Top rated · Stats

wangxiwen

Open on Codeforces · Unique solved

Rating2261· 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
31
Unique solved
1,528
Submissions (all)
5,594
Years with activity
2021–2025

Solved by problem rating

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

  • Unrated4
  • 800–899109
  • 900–99935
  • 1000–109933
  • 1100–119932
  • 1200–129950
  • 1300–139954

Solved by topic

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

  • greedy522
  • math514
  • dp411
  • implementation392
  • data structures342
  • brute force306
  • constructive algorithms

Rating changes

2021

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

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)461-92261
2024-12-28 17:35Good Bye 2024: 2025 is NEAR358+582270
2024-01-27 16:45Codeforces Round 921 (Div. 1)438-132212
2023-12-30 16:50Good Bye 2023525+342225
2023-06-12 16:35Educational Codeforces Round 150 (Rated for Div. 2)10
1400–1499
116
  • 1500–159977
  • 1600–169981
  • 1700–179993
  • 1800–189996
  • 1900–1999117
  • 2000–209977
  • 2100–219984
  • 2200–229955
  • 2300–239997
  • 2400–249971
  • 2500–259980
  • 2600–269949
  • 2700–279931
  • 2800–289922
  • 2900–299917
  • 3000–309920
  • 3100–31998
  • 3200–32999
  • 3300–33995
  • 3400–34993
  • 3500–35993
  • 301
  • sortings211
  • dfs and similar191
  • binary search188
  • graphs182
  • trees148
  • number theory140
  • combinatorics131
  • bitmasks126
  • two pointers115
  • strings115
  • shortest paths70
  • dsu68
  • divide and conquer64
  • probabilities56
  • hashing48
  • geometry43
  • interactive37
  • games31
  • string suffix structures18
  • flows17
  • matrices16
  • Other (9 tags)73
  • 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.

    2022

    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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 33/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 56/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 81/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 25/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 13/day in 2025)

    +177
    2191
    2023-03-23 16:35Educational Codeforces Round 145 (Rated for Div. 2)617-462014
    2023-01-10 13:45Codeforces Round 843 (Div. 2)422-242060
    2023-01-03 17:05Hello 2023501+692084
    2022-12-30 17:05Good Bye 2022: 2023 is NEAR1062+212015
    2022-12-15 17:05Codeforces Round 838 (Div. 2)382+11994
    2022-11-12 16:35Codeforces Round 833 (Div. 2)128+781993
    2022-10-02 16:50Codeforces Round 824 (Div. 2)840-391915