CF Elite Tracker
TopExploreDivisionsLearnPracticeUser solvedHelp
HelpLog inSign up

Top rated · Stats

yangzhanyu

Open on Codeforces · Unique solved

Rating2118· 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
20
Unique solved
426
Submissions (all)
1,006
Years with activity
2018–2025

Solved by problem rating

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

  • Unrated250
  • 800–89935
  • 900–99911
  • 1000–10998
  • 1100–119911
  • 1200–129916
  • 1300–13997

Solved by topic

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

  • greedy94
  • math79
  • implementation58
  • constructive algorithms53
  • brute force49
  • dp32
  • data structures

Rating changes

2018

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-09-29 17:35Codeforces Round 976 (Div. 2) and Divide By Zero 9.0165+442118
2024-09-20 16:35Codeforces Round 973 (Div. 2)164+542074
2024-09-14 16:35Codeforces Round 972 (Div. 2)1175-602020
2024-08-25 16:35Codeforces Round 968 (Div. 2)314+122080
2024-08-20 16:35Codeforces Round 967 (Div. 2)
1400–1499
9
  • 1500–159911
  • 1600–16997
  • 1700–17997
  • 1800–18998
  • 1900–199911
  • 2000–20994
  • 2100–21998
  • 2200–22996
  • 2300–23996
  • 2400–24992
  • 2500–25991
  • 2600–26991
  • 2700–27993
  • 2900–29992
  • 3100–31992
  • 31
  • binary search28
  • sortings24
  • number theory19
  • trees16
  • two pointers14
  • graphs14
  • bitmasks13
  • strings13
  • dfs and similar13
  • combinatorics10
  • games8
  • dsu7
  • divide and conquer6
  • geometry5
  • interactive5
  • probabilities3
  • shortest paths3
  • hashing2
  • schedules1
  • ternary search1
  • meet-in-the-middle1
  • Other (3 tags)3
  • 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.

    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.

    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 16/day in 2018)

    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)

    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 8/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 42/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 26/day in 2025)

    91
    +104
    2068
    2024-08-15 16:35Educational Codeforces Round 169 (Rated for Div. 2)607+151964
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)1281+51949
    2024-08-10 16:35Codeforces Round 965 (Div. 2)195+1061944
    2024-08-04 16:35Codeforces Round 963 (Div. 2)324+1091838
    2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)2655-261729
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)1364+611755
    2024-07-23 16:35Codeforces Round 961 (Div. 2)1888-111694