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RandomLB

Open on Codeforces · Unique solved

Rating2160· 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
67
Unique solved
688
Submissions (all)
1,421
Years with activity
2021–2024

Solved by problem rating

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

  • Unrated26
  • 800–899182
  • 900–99938
  • 1000–109938
  • 1100–119932
  • 1200–129930
  • 1300–139937

Solved by topic

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

  • greedy299
  • math247
  • implementation177
  • constructive algorithms164
  • brute force146
  • dp129
  • 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
2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)654-82160
2023-06-18 16:35Codeforces Round 880 (Div. 1)531-502168
2023-04-02 16:35Codeforces Round 862 (Div. 2)10+1672218
2023-03-26 16:35Codeforces Round 860 (Div. 2)235+202051
2023-03-23 16:35Educational Codeforces Round 145 (Rated for Div. 2)
1400–1499
30
  • 1500–159931
  • 1600–169935
  • 1700–179938
  • 1800–189927
  • 1900–199937
  • 2000–209932
  • 2100–219920
  • 2200–229923
  • 2300–239911
  • 2400–249911
  • 2500–25993
  • 2600–26991
  • 2700–27993
  • 2900–29992
  • 3100–31991
  • 118
  • sortings99
  • strings67
  • dfs and similar63
  • binary search62
  • number theory62
  • graphs53
  • two pointers46
  • trees43
  • bitmasks43
  • combinatorics35
  • dsu23
  • shortest paths22
  • geometry21
  • games16
  • divide and conquer16
  • hashing16
  • probabilities12
  • interactive10
  • flows5
  • 2-sat3
  • *special3
  • Other (7 tags)13
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 34/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 28/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 27/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 2/day in 2024)

    153
    +47
    2031
    2023-03-12 16:35Nebius Welcome Round (Div. 1 + Div. 2)710+361984
    2023-01-05 16:35Codeforces Round 842 (Div. 2)971-431948
    2023-01-03 17:05Hello 2023777+461991
    2022-12-30 17:05Good Bye 2022: 2023 is NEAR2487-651945
    2022-12-27 16:35Codeforces Round 841 (Div. 2) and Divide by Zero 2022461-162010
    2022-12-19 16:35Codeforces Round 840 (Div. 2) and Enigma 2022 - Cybros LNMIIT227+262026
    2022-12-17 17:05Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)578+502000