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CN_Amuzi

Open on Codeforces · Unique solved

Rating2138· 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
37
Unique solved
667
Submissions (all)
1,827
Years with activity
2020–2025

Solved by problem rating

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

  • Unrated382
  • 800–89962
  • 900–99917
  • 1000–109917
  • 1100–119912
  • 1200–129918
  • 1300–139912

Solved by topic

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

  • math124
  • greedy121
  • constructive algorithms78
  • implementation73
  • brute force64
  • dp60
  • data structures

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-04-27 16:35Codeforces Round 868 (Div. 2)64+632138
2023-04-20 16:35Educational Codeforces Round 147 (Rated for Div. 2)171+212075
2023-03-29 11:05Codeforces Round 861 (Div. 2)84+832054
2023-02-27 17:35Codeforces Round 854 by cybercats (Div. 1 + Div. 2)644+311971
2022-12-12 16:35Educational Codeforces Round 139 (Rated for Div. 2)
1400–1499
19
  • 1500–159913
  • 1600–169913
  • 1700–179921
  • 1800–189911
  • 1900–199914
  • 2000–20998
  • 2100–219915
  • 2200–22997
  • 2300–239911
  • 2400–24996
  • 2500–25995
  • 2600–26991
  • 2800–28992
  • 2900–29991
  • 46
  • binary search40
  • sortings40
  • number theory33
  • strings27
  • two pointers24
  • graphs24
  • combinatorics23
  • dfs and similar20
  • trees15
  • dsu14
  • bitmasks12
  • geometry6
  • flows6
  • games6
  • divide and conquer6
  • hashing6
  • interactive6
  • probabilities5
  • shortest paths4
  • ternary search3
  • graph matchings3
  • Other (3 tags)4
  • 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.

    2021

    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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 19/day in 2020)

    2021

    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 32/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 39/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 37/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 22/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 2/day in 2025)

    979
    -60
    1940
    2022-12-11 17:35Codeforces Round 837 (Div. 2)798-552000
    2022-10-23 12:05Codeforces Round 830 (Div. 2)59+1132055
    2022-10-10 16:35Codeforces Round 825 (Div. 2)201+711942
    2022-10-02 16:50Codeforces Round 824 (Div. 2)352+481871
    2022-09-29 16:35Educational Codeforces Round 136 (Rated for Div. 2)2177-941823
    2022-08-13 16:50Codeforces Round 813 (Div. 2)3566-1311917
    2022-05-31 16:35CodeCraft-22 and Codeforces Round 795 (Div. 2)136+542048