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Top rated · Stats

Tong_Yuxin

Open on Codeforces · Unique solved

Rating2176· 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
400
Submissions (all)
1,097
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated6
  • 800–89946
  • 900–9998
  • 1000–10999
  • 1100–119914
  • 1200–129911
  • 1300–139913

Solved by topic

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

  • greedy158
  • dp141
  • math135
  • data structures107
  • implementation80
  • constructive algorithms75
  • brute force

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)44+1052176
2025-09-09 16:35Codeforces Round 1049 (Div. 2)216+422071
2025-05-01 16:35Codeforces Round 1022 (Div. 2)231+382029
2025-04-26 11:35Codeforces Round 1021 (Div. 1)334+611991
2025-04-21 16:35Codeforces Round 1019 (Div. 2)
1400–1499
12
  • 1500–159912
  • 1600–169913
  • 1700–179914
  • 1800–189920
  • 1900–199928
  • 2000–209927
  • 2100–219917
  • 2200–229927
  • 2300–239919
  • 2400–249928
  • 2500–259913
  • 2600–26996
  • 2700–279916
  • 2800–28999
  • 2900–299911
  • 3000–30997
  • 3100–31992
  • 3200–32996
  • 3300–33994
  • 3400–34992
  • 71
  • graphs68
  • dfs and similar62
  • trees53
  • binary search50
  • sortings46
  • number theory40
  • bitmasks40
  • combinatorics33
  • strings29
  • dsu26
  • two pointers25
  • divide and conquer19
  • shortest paths16
  • games15
  • flows10
  • interactive9
  • hashing8
  • probabilities7
  • geometry6
  • string suffix structures4
  • *special4
  • Other (8 tags)17
  • 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 82/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 20/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 21/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 12/day in 2026)

    339
    +45
    1930
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)1708-291885
    2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)802+881914
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)2415-581826
    2024-11-15 14:35Codeforces Round 987 (Div. 2)955-181884
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)541+1171902
    2024-11-01 16:35Codeforces Round 983 (Div. 2)429+981785
    2024-10-19 16:20Codeforces Round 979 (Div. 2)8795-1611687