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zjy2008

Open on Codeforces · Unique solved

Rating3076· Legendary 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
44
Unique solved
993
Submissions (all)
4,199
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.

  • Unrated86
  • 800–89939
  • 900–99910
  • 1000–109911
  • 1100–119910
  • 1200–129914
  • 1300–1399

Solved by topic

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

  • math320
  • dp287
  • data structures273
  • greedy266
  • constructive algorithms206
  • graphs145
  • 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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Recent rated rounds

When (UTC)ContestRankΔNew
2025-07-31 17:35Codeforces Round 1040 (Div. 1)6+1633076
2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)117-572913
2025-05-31 16:35Codeforces Round 1028 (Div. 1)23+712970
2025-05-11 17:05Codeforces Round 1024 (Div. 1)27+602899
2025-04-26 11:35Codeforces Round 1021 (Div. 1)
14
  • 1400–149916
  • 1500–159913
  • 1600–169914
  • 1700–179927
  • 1800–189917
  • 1900–199925
  • 2000–209923
  • 2100–219925
  • 2200–229931
  • 2300–239934
  • 2400–249951
  • 2500–259947
  • 2600–269958
  • 2700–279946
  • 2800–289954
  • 2900–299946
  • 3000–309959
  • 3100–319946
  • 3200–329944
  • 3300–339951
  • 3400–349927
  • 3500–359955
  • 141
  • trees138
  • implementation127
  • binary search102
  • dfs and similar102
  • sortings100
  • combinatorics100
  • bitmasks97
  • number theory94
  • divide and conquer77
  • interactive45
  • strings44
  • dsu42
  • two pointers41
  • probabilities34
  • flows33
  • *special32
  • games32
  • shortest paths31
  • fft30
  • hashing30
  • geometry29
  • Other (8 tags)83
  • Jun
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    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
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    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
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    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
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    Apr
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    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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    Dec

    LessMore (max 12/day in 2022)

    2023

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 57/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
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    Dec

    LessMore (max 77/day in 2024)

    2025

    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 183/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 29/day in 2026)

    34
    +34
    2839
    2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)198-762805
    2025-03-10 17:15Codeforces Round 1008 (Div. 1)71-252881
    2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)44+482906
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)41+522858
    2024-12-28 17:35Good Bye 2024: 2025 is NEAR80+212806
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)92+62785
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)51+642779