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oscar1f_will_win_IOI2024

Open on Codeforces · Unique solved

Rating2403· Grandmaster

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
41
Unique solved
1,188
Submissions (all)
2,027
Years with activity
2017–2025

Solved by problem rating

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

  • Unrated17
  • 800–899307
  • 900–999152
  • 1000–1099174
  • 1100–119996
  • 1200–129957
  • 1300–1399

Solved by topic

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

  • implementation632
  • math373
  • greedy334
  • brute force208
  • constructive algorithms169
  • sortings143
  • dp

Rating changes

2017

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2017

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-06-24 17:05CodeTON Round 5 (Div. 1 + Div. 2, Rated, Prizes!)239+222403
2023-05-28 17:05Codeforces Round 875 (Div. 1)175+242381
2023-04-15 11:05Codeforces Round 866 (Div. 1)294-422357
2023-04-09 17:00Codeforces Round 865 (Div. 1)122+572399
2022-12-30 17:05Good Bye 2022: 2023 is NEAR433
66
  • 1400–149943
  • 1500–159940
  • 1600–169932
  • 1700–179938
  • 1800–189924
  • 1900–199928
  • 2000–209924
  • 2100–219911
  • 2200–229915
  • 2300–239910
  • 2400–249919
  • 2500–259913
  • 2600–26997
  • 2700–27995
  • 2800–28993
  • 2900–29993
  • 3000–30991
  • 3100–31991
  • 3200–32992
  • 128
  • strings116
  • data structures95
  • binary search73
  • graphs70
  • number theory66
  • dfs and similar57
  • two pointers49
  • trees39
  • combinatorics35
  • geometry32
  • bitmasks31
  • dsu23
  • games21
  • shortest paths19
  • divide and conquer12
  • hashing11
  • interactive7
  • probabilities7
  • expression parsing6
  • matrices5
  • *special5
  • Other (7 tags)12
  • Jun
    Jul
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    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.

    2018

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    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.

    2019

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    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.

    2020

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

    Jan
    Feb
    Mar
    Apr
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    Jun
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    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
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    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
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    Jun
    Jul
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    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
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    Jun
    Jul
    Aug
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    Oct
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    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
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    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
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    Apr
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    Jun
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    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
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    Dec

    LessMore (max 20/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 22/day in 2018)

    2019

    Download PNG

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

    Jan
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    2020

    Download PNG

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

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    2021

    Download PNG

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

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    2022

    Download PNG

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

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    2023

    Download PNG

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

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    2024

    Download PNG

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

    Jan
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    2025

    Download PNG

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

    Jan
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    LessMore (max 2/day in 2025)

    +12
    2342
    2022-12-17 17:05Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)343-22330
    2022-11-26 16:35Codeforces Global Round 24262+152332
    2022-11-20 17:05Pinely Round 1 (Div. 1 + Div. 2)480-442317
    2022-11-06 17:05CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!)154+702361
    2022-07-31 16:35CodeTON Round 2 (Div. 1 + Div. 2, Rated, Prizes!)204+842291
    2021-12-29 17:35Good Bye 2021: 2022 is NEAR490+302207
    2021-09-12 17:05Codeforces Global Round 16726-172177