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LinRui

Open on Codeforces · Unique solved

Rating2271· 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
16
Unique solved
632
Submissions (all)
1,066
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.

  • Unrated2
  • 800–89938
  • 900–99947
  • 1000–109911
  • 1100–11999
  • 1200–129916
  • 1300–13996

Solved by topic

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

  • greedy215
  • math188
  • dp177
  • implementation152
  • data structures152
  • constructive algorithms126

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
2023-03-12 16:35Nebius Welcome Round (Div. 1 + Div. 2)729-602271
2023-03-09 12:35Codeforces Round 857 (Div. 1)351-412331
2023-02-27 17:35Codeforces Round 854 by cybercats (Div. 1 + Div. 2)181+462372
2023-02-05 15:05Codeforces Round 850 (Div. 1, based on VK Cup 2022 - Final Round)397-302326
2023-01-29 17:35TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!)
1400–1499
3
  • 1500–159941
  • 1600–169912
  • 1700–179930
  • 1800–18997
  • 1900–19999
  • 2000–209931
  • 2100–219940
  • 2200–229950
  • 2300–23995
  • 2400–249932
  • 2500–2599107
  • 2600–269945
  • 2700–279927
  • 2800–289922
  • 2900–299910
  • 3000–309921
  • 3100–31993
  • 3200–32995
  • 3300–33992
  • 3400–34991
  • brute force
    120
  • trees91
  • dfs and similar90
  • graphs89
  • sortings81
  • binary search79
  • number theory58
  • combinatorics54
  • bitmasks53
  • strings42
  • two pointers42
  • dsu38
  • divide and conquer33
  • geometry30
  • interactive23
  • shortest paths22
  • hashing20
  • probabilities18
  • games18
  • graph matchings14
  • flows9
  • fft8
  • Other (7 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 6/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 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
    Nov
    Dec

    LessMore (max 11/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 12/day in 2024)

    262
    +34
    2356
    2023-01-15 15:05Codeforces Round 844 (Div. 1 + Div. 2, based on VK Cup 2022 - Elimination Round)433-242322
    2023-01-03 17:05Hello 2023153+1072346
    2022-12-30 17:05Good Bye 2022: 2023 is NEAR214+1282239
    2022-12-27 16:35Codeforces Round 841 (Div. 2) and Divide by Zero 2022142+332111
    2022-12-19 16:35Codeforces Round 840 (Div. 2) and Enigma 2022 - Cybros LNMIIT28+1632078
    2022-12-17 17:05Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)659+1121915
    2022-12-16 16:35Educational Codeforces Round 140 (Rated for Div. 2)104+2661803