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Top rated · Stats

yuan-shen

Open on Codeforces · Unique solved

Rating2227· 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
87
Unique solved
1,324
Submissions (all)
2,530
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.

  • Unrated117
  • 800–899296
  • 900–99958
  • 1000–109975
  • 1100–119974
  • 1200–129945
  • 1300–139955

Solved by topic

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

  • greedy512
  • math458
  • implementation387
  • constructive algorithms303
  • brute force261
  • dp228
  • data structures

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
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-02-27 16:35Educational Codeforces Round 175 (Rated for Div. 2)13+1432227
2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)625+272084
2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)426-102057
2024-06-09 17:35Codeforces Global Round 26974-112067
2024-06-06 16:35Codeforces Round 951 (Div. 2)
1400–1499
56
  • 1500–159942
  • 1600–169959
  • 1700–179966
  • 1800–189960
  • 1900–199997
  • 2000–209973
  • 2100–219953
  • 2200–229943
  • 2300–239926
  • 2400–249914
  • 2500–25999
  • 2600–26993
  • 2700–27992
  • 2800–28991
  • 203
  • sortings167
  • binary search157
  • number theory122
  • strings122
  • dfs and similar119
  • two pointers95
  • graphs94
  • combinatorics89
  • bitmasks84
  • trees83
  • dsu43
  • games36
  • shortest paths32
  • divide and conquer29
  • geometry29
  • hashing24
  • interactive20
  • probabilities17
  • *special10
  • flows6
  • ternary search6
  • Other (9 tags)24
  • 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
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    Sep
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    Nov
    Dec

    LessMore (max 24/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 20/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 21/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 6/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 8/day in 2026)

    116
    +76
    2078
    2024-04-30 17:05Codeforces Round 942 (Div. 1)728-142002
    2024-04-27 16:35Codeforces Round 941 (Div. 1)659+142016
    2024-04-21 16:50Codeforces Round 940 (Div. 2) and CodeCraft-23462-12002
    2024-04-13 16:35Codeforces Round 939 (Div. 2)1379-832003
    2024-04-06 17:35Codeforces Global Round 25793+92086
    2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)771+142077
    2024-03-05 16:35Codeforces Round 932 (Div. 2)510-132063