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Top rated · Stats

xuezhe

Open on Codeforces · Unique solved

Rating2272· 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
19
Unique solved
140
Submissions (all)
301
Years with activity
2019–2024

Solved by problem rating

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

  • Unrated21
  • 800–89914
  • 900–9995
  • 1000–10997
  • 1100–11995
  • 1200–12996
  • 1300–13995

Solved by topic

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

  • greedy54
  • implementation45
  • math42
  • constructive algorithms36
  • dp23
  • brute force21
  • sortings

Rating changes

2019

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2019

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)364+362272
2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)287+802236
2024-10-20 11:05Codeforces Round 980 (Div. 1)464+62156
2022-02-12 17:05Codeforces Global Round 19444+492150
2021-02-05 16:35Codeforces Round 699 (Div. 2)
1400–1499
9
  • 1500–15997
  • 1600–16996
  • 1700–179910
  • 1800–18997
  • 1900–19996
  • 2000–20995
  • 2100–21992
  • 2200–22993
  • 2300–23997
  • 2400–24994
  • 2500–25991
  • 2600–26992
  • 2700–27993
  • 2800–28991
  • 3000–30991
  • 3100–31992
  • 3400–34991
  • 18
  • data structures18
  • trees15
  • dfs and similar14
  • graphs13
  • combinatorics12
  • strings12
  • number theory10
  • bitmasks10
  • binary search8
  • dsu7
  • two pointers6
  • games4
  • shortest paths3
  • hashing2
  • interactive2
  • chinese remainder theorem1
  • divide and conquer1
  • geometry1
  • flows1
  • graph matchings1
  • probabilities1
  • 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.

    2020

    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.

    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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 15/day in 2019)

    2020

    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 11/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 16/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 10/day in 2022)

    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 9/day in 2024)

    75
    +104
    2101
    2020-08-21 16:35Codeforces Round 665 (Div. 2)674-91997
    2020-07-24 16:35Codeforces Round 659 (Div. 2)86+1322006
    2020-07-21 16:35Codeforces Round 658 (Div. 1)1167-531874
    2020-04-12 16:05Codeforces Round 633 (Div. 2)114+1201927
    2020-03-31 16:05Codeforces Round 630 (Div. 2)905+601807
    2020-02-15 15:05Codeforces Round 620 (Div. 2)887+441747
    2020-01-04 14:35Hello 20202073+131703