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321zdq

Open on Codeforces · Unique solved

Rating2301· International 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
42
Unique solved
176
Submissions (all)
361
Years with activity
2021–2023

Solved by problem rating

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

  • Unrated14
  • 800–89945
  • 900–9998
  • 1000–10995
  • 1100–119913
  • 1200–12998
  • 1300–13998

Solved by topic

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

  • greedy78
  • math71
  • constructive algorithms54
  • implementation39
  • brute force33
  • dp29
  • data structures

Rating changes

2021

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

Jan
Feb
Mar
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
2023-07-29 17:05Codeforces Round 889 (Div. 1)152+1012301
2022-11-04 16:35Codeforces Round 832 (Div. 2)30+1052200
2022-10-29 11:55Codeforces Round 831 (Div. 1 + Div. 2)698-402095
2022-10-15 16:50Codeforces Global Round 23453+592135
2022-10-10 16:35Codeforces Round 825 (Div. 2)353
1400–1499
10
  • 1500–159910
  • 1600–169910
  • 1700–17997
  • 1800–18996
  • 1900–199913
  • 2000–20996
  • 2100–21993
  • 2200–22995
  • 2300–23993
  • 2400–24991
  • 2500–25991
  • 23
  • sortings23
  • number theory18
  • two pointers16
  • combinatorics14
  • binary search14
  • strings12
  • dfs and similar9
  • graphs9
  • bitmasks8
  • games8
  • trees8
  • geometry7
  • dsu7
  • shortest paths3
  • probabilities2
  • schedules2
  • hashing2
  • fft1
  • ternary search1
  • divide and conquer1
  • matrices1
  • Other (1 tag)1
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 16/day in 2021)

    2022

    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 17/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
    Nov
    Dec

    LessMore (max 5/day in 2023)

    -20
    2076
    2022-10-07 17:05Dytechlab Cup 2022524+252096
    2022-10-02 16:50Codeforces Round 824 (Div. 2)121+542071
    2022-09-30 17:05Codeforces Global Round 22428+982017
    2022-08-16 16:35Codeforces Round 814 (Div. 1)747-561919
    2022-08-13 16:50Codeforces Round 813 (Div. 2)592-21975
    2022-08-04 16:35Educational Codeforces Round 133 (Rated for Div. 2)353+341977
    2022-07-16 16:35Codeforces Round 808 (Div. 2)166+711943