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WangYuanyi

Open on Codeforces · Unique solved

Rating2417· Grandmaster

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
14
Unique solved
196
Submissions (all)
478
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.

  • Unrated11
  • 800–89923
  • 900–9994
  • 1000–10994
  • 1100–11993
  • 1200–12998
  • 1300–13996

Solved by topic

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

  • greedy74
  • math68
  • dp64
  • constructive algorithms54
  • data structures43
  • implementation37
  • brute force

Rating changes

2022

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)229+52417
2026-02-11 17:35Codeforces Round 1079 (Div. 1)276-382412
2026-01-29 17:35Codeforces Round 1077 (Div. 1)115+422450
2026-01-17 17:35Codeforces Round 1073 (Div. 1)191+252408
2025-12-27 17:35Good Bye 2025
1400–1499
6
  • 1500–15992
  • 1600–16997
  • 1700–17999
  • 1800–18994
  • 1900–199911
  • 2000–209913
  • 2100–21996
  • 2200–22998
  • 2300–239913
  • 2400–249918
  • 2500–25999
  • 2600–26996
  • 2700–27992
  • 2800–28995
  • 2900–29991
  • 3000–30996
  • 3100–31991
  • 3200–32992
  • 3300–33996
  • 3500–35992
  • 29
  • combinatorics23
  • sortings20
  • binary search19
  • bitmasks19
  • graphs18
  • number theory18
  • dfs and similar16
  • two pointers16
  • trees15
  • strings13
  • interactive11
  • probabilities11
  • divide and conquer10
  • games8
  • dsu7
  • geometry7
  • shortest paths6
  • hashing4
  • matrices4
  • flows2
  • graph matchings2
  • Other (7 tags)11
  • 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
    Oct
    Nov
    Dec

    LessMore (max 13/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Nov
    Dec

    LessMore (max 10/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 13/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 19/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)

    153
    +98
    2383
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)268+592285
    2025-12-06 10:15Codeforces Round 1069 (Div. 1)144+972226
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)325+772129
    2025-11-16 16:35Codeforces Round 1064 (Div. 2)5+2952052
    2025-08-28 17:35Codeforces Round 1046 (Div. 2)193+2171757
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)3228+971540
    2025-07-05 16:35Codeforces Round 1035 (Div. 2)142+4741443