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Top rated · Stats

xlwang

Open on Codeforces · Unique solved

Rating2226· 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
28
Unique solved
858
Submissions (all)
2,370
Years with activity
2020–2025

Solved by problem rating

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

  • Unrated4
  • 800–89984
  • 900–99925
  • 1000–109920
  • 1100–119918
  • 1200–129927
  • 1300–139925

Solved by topic

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

  • math286
  • greedy283
  • dp232
  • constructive algorithms206
  • data structures203
  • brute force149
  • implementation

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)566-42226
2023-11-07 16:35Codeforces Round 908 (Div. 1)289+402230
2023-10-28 17:05Codeforces Round 906 (Div. 1)200+1062190
2023-10-22 13:05Codeforces Round 905 (Div. 2)250-152084
2023-10-08 11:35Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round)
1400–1499
25
  • 1500–159922
  • 1600–169917
  • 1700–179919
  • 1800–189928
  • 1900–199925
  • 2000–209925
  • 2100–219917
  • 2200–229922
  • 2300–239917
  • 2400–249934
  • 2500–259933
  • 2600–269956
  • 2700–279946
  • 2800–289962
  • 2900–299936
  • 3000–309945
  • 3100–319933
  • 3200–329925
  • 3300–339926
  • 3400–349918
  • 3500–359924
  • 134
  • graphs122
  • sortings110
  • binary search108
  • trees102
  • combinatorics97
  • bitmasks84
  • dfs and similar81
  • number theory66
  • two pointers66
  • strings53
  • divide and conquer47
  • dsu38
  • interactive31
  • probabilities31
  • shortest paths24
  • flows24
  • games23
  • graph matchings20
  • hashing19
  • string suffix structures19
  • fft17
  • Other (6 tags)44
  • 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.

    2021

    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.

    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 1/day in 2020)

    2021

    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 27/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
    Nov
    Dec

    LessMore (max 34/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 28/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 30/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 17/day in 2025)

    589
    -16
    2099
    2023-09-24 16:35Educational Codeforces Round 155 (Rated for Div. 2)223+182115
    2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)711+182097
    2023-07-29 17:05Codeforces Round 889 (Div. 1)824-782079
    2023-07-23 17:05Codeforces Round 887 (Div. 1)132+1702157
    2023-07-16 16:35Codeforces Round 885 (Div. 2)1315-851987
    2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)638+252072
    2023-07-06 16:50Codeforces Round 882 (Div. 2)246+272047