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Top rated · Stats

syysongyuyang

Open on Codeforces · Unique solved

Rating2326· International 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
418
Submissions (all)
1,152
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated6
  • 800–89961
  • 900–99914
  • 1000–109921
  • 1100–119914
  • 1200–129912
  • 1300–139916

Solved by topic

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

  • math162
  • greedy159
  • dp113
  • data structures101
  • constructive algorithms97
  • implementation87
  • brute force

Rating changes

2022

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

Jan
Feb
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May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)208+472326
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)523-212279
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)139+752300
2026-02-11 17:35Codeforces Round 1079 (Div. 1)172+922225
2025-12-27 17:35Good Bye 2025
1400–1499
19
  • 1500–159914
  • 1600–169917
  • 1700–179924
  • 1800–189919
  • 1900–199923
  • 2000–209920
  • 2100–219917
  • 2200–229921
  • 2300–239920
  • 2400–249929
  • 2500–25999
  • 2600–269913
  • 2700–27999
  • 2800–28997
  • 2900–29994
  • 3000–30991
  • 3100–31991
  • 3200–32993
  • 3400–34991
  • 3500–35993
  • 85
  • sortings63
  • dfs and similar47
  • combinatorics45
  • number theory45
  • graphs44
  • binary search42
  • trees40
  • strings33
  • bitmasks31
  • two pointers30
  • probabilities20
  • dsu19
  • divide and conquer18
  • hashing15
  • games13
  • interactive10
  • shortest paths7
  • flows6
  • string suffix structures5
  • geometry5
  • meet-in-the-middle4
  • Other (6 tags)12
  • 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.

    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
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    Dec

    LessMore (max 16/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
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    Dec

    LessMore (max 30/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 3/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 12/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 14/day in 2026)

    391
    +91
    2133
    2025-10-19 16:35Codeforces Round 1060 (Div. 2)224+362042
    2025-09-15 16:35Educational Codeforces Round 182 (Rated for Div. 2)272+492006
    2023-11-25 17:20CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!)148+2541957
    2023-11-24 16:35Educational Codeforces Round 158 (Rated for Div. 2)2098-461703
    2023-11-19 16:35Codeforces Round 910 (Div. 2)211+1551749
    2023-11-07 16:35Codeforces Round 908 (Div. 2)778+711594
    2023-10-28 17:05Codeforces Round 906 (Div. 2)900+871523