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Top rated · Stats

ollelapidus

Open on Codeforces · Unique solved

Rating2147· 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
66
Unique solved
581
Submissions (all)
1,396
Years with activity
2020–2026

Solved by problem rating

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

  • Unrated23
  • 800–899108
  • 900–99919
  • 1000–109925
  • 1100–119931
  • 1200–129930
  • 1300–139931

Solved by topic

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

  • greedy310
  • math236
  • constructive algorithms179
  • implementation147
  • dp132
  • brute force129
  • 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
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)382+202147
2026-02-23 17:05Codeforces Round 1082 (Div. 1)339+332127
2026-02-21 16:35Codeforces Round 1081 (Div. 2)143+442094
2026-01-29 17:35Codeforces Round 1077 (Div. 1)695-942050
2026-01-07 17:35Hello 2026556
1400–1499
30
  • 1500–159927
  • 1600–169929
  • 1700–179937
  • 1800–189928
  • 1900–199935
  • 2000–209933
  • 2100–219938
  • 2200–229920
  • 2300–239911
  • 2400–24998
  • 2500–25997
  • 2600–26994
  • 2700–27992
  • 2800–28991
  • 2900–29993
  • 3300–33991
  • 96
  • sortings96
  • binary search87
  • number theory59
  • bitmasks59
  • two pointers55
  • combinatorics53
  • graphs53
  • strings47
  • dfs and similar46
  • trees41
  • games31
  • interactive22
  • dsu18
  • shortest paths16
  • divide and conquer13
  • geometry13
  • hashing9
  • probabilities8
  • *special6
  • graph matchings5
  • ternary search4
  • Other (8 tags)11
  • 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.

    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
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    Aug
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    Dec

    LessMore (max 15/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    LessMore (max 19/day in 2022)

    2023

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 27/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
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    LessMore (max 24/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 23/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 34/day in 2026)

    +34
    2144
    2025-12-27 17:35Good Bye 2025448+822110
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1307-352028
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)1684-922063
    2025-10-30 19:35Pinely Round 5 (Div. 1 + Div. 2)424-62155
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)278+692161
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)675-412092
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)1225-522133