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Top rated · Stats

20111019Yu

Open on Codeforces · Unique solved

Rating2173· 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
25
Unique solved
498
Submissions (all)
1,397
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.

  • Unrated55
  • 800–89979
  • 900–99913
  • 1000–109918
  • 1100–119926
  • 1200–129924
  • 1300–139926

Solved by topic

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

  • greedy185
  • math154
  • dp115
  • implementation100
  • brute force93
  • constructive algorithms92
  • data structures

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
2026-02-23 17:05Codeforces Round 1082 (Div. 1)109+1832173
2026-02-21 16:35Codeforces Round 1081 (Div. 2)254+401990
2026-01-29 17:35Codeforces Round 1077 (Div. 1)548-151950
2026-01-23 16:35Codeforces Round 1075 (Div. 2)267+561965
2026-01-17 17:35Codeforces Round 1073 (Div. 2)212
1400–1499
27
  • 1500–159927
  • 1600–169925
  • 1700–179926
  • 1800–189926
  • 1900–199919
  • 2000–209919
  • 2100–219923
  • 2200–229915
  • 2300–239916
  • 2400–249912
  • 2500–259910
  • 2600–26992
  • 2800–28993
  • 2900–29992
  • 3000–30993
  • 3300–33991
  • 3500–35991
  • 79
  • sortings59
  • binary search57
  • number theory49
  • dfs and similar45
  • graphs41
  • trees38
  • bitmasks36
  • strings36
  • two pointers36
  • combinatorics31
  • dsu16
  • games15
  • shortest paths13
  • geometry9
  • interactive8
  • matrices7
  • divide and conquer6
  • hashing6
  • ternary search4
  • fft3
  • graph matchings3
  • Other (6 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.

    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 74/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 35/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 46/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 10/day in 2026)

    +61
    1909
    2026-01-07 17:35Hello 20261754+01848
    2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)1688-531848
    2025-12-27 17:35Good Bye 20251728-51901
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)751-111906
    2025-09-17 16:35Codeforces Round 1051 (Div. 2)877-91917
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)735-211926
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)1030+211947