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PEIMUDA

Open on Codeforces · Unique solved

Rating3160· 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
42
Unique solved
717
Submissions (all)
1,616
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated17
  • 800–89975
  • 900–99915
  • 1000–109931
  • 1100–119925
  • 1200–129931
  • 1300–1399

Solved by topic

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

  • greedy228
  • math218
  • dp191
  • implementation182
  • brute force150
  • constructive algorithms130
  • data structures

Rating changes

2021

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)19+363160
2025-12-06 10:15Codeforces Round 1069 (Div. 1)53-1283124
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)4+1413252
2025-09-24 14:50Codeforces Round 1053 (Div. 1)6+1563111
2025-04-26 11:35Codeforces Round 1021 (Div. 1)
33
  • 1400–149938
  • 1500–159934
  • 1600–169921
  • 1700–179925
  • 1800–189924
  • 1900–199928
  • 2000–209933
  • 2100–219928
  • 2200–229924
  • 2300–239935
  • 2400–249952
  • 2500–259922
  • 2600–269934
  • 2700–279910
  • 2800–289925
  • 2900–299913
  • 3000–309922
  • 3100–31998
  • 3200–32996
  • 3300–33994
  • 3500–35994
  • 130
  • sortings92
  • dfs and similar84
  • graphs84
  • binary search75
  • combinatorics66
  • bitmasks62
  • trees61
  • number theory54
  • strings51
  • dsu36
  • two pointers35
  • probabilities34
  • divide and conquer34
  • shortest paths32
  • geometry23
  • games23
  • hashing20
  • interactive17
  • flows12
  • matrices11
  • *special9
  • Other (9 tags)26
  • 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.

    2022

    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.

    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 25/day in 2021)

    2022

    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 19/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 19/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 44/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 11/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 2/day in 2026)

    48
    -39
    2955
    2025-01-04 17:05Hello 202553-32994
    2024-12-28 17:35Good Bye 2024: 2025 is NEAR23+682997
    2024-12-03 08:25Codeforces Round 990 (Div. 1)58-602929
    2024-09-27 16:05Codeforces Round 975 (Div. 1)2+2572989
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)137-152732
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)23+1482747
    2024-06-09 17:35Codeforces Global Round 26237-322599