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Top rated · Stats

hbi1998

Open on Codeforces · Unique solved

Rating2517· 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
8
Unique solved
1,068
Submissions (all)
2,808
Years with activity
2018–2025

Solved by problem rating

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

  • Unrated768
  • 800–89937
  • 900–99913
  • 1000–109915
  • 1100–119914
  • 1200–12999
  • 1300–139913

Solved by topic

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

  • math88
  • implementation86
  • greedy82
  • dp50
  • constructive algorithms46
  • data structures44
  • brute force

Rating changes

2018

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

2018

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2019-12-21 13:05Codeforces Round 609 (Div. 1)233-922517
2019-10-20 11:05Codeforces Round 594 (Div. 1)29+662609
2019-10-16 17:05Codeforces Global Round 518+1982543
2019-09-23 16:35Codeforces Round 588 (Div. 1)72+1012345
2019-06-07 14:05Codeforces Round 564 (Div. 1)92
1400–1499
12
  • 1500–159916
  • 1600–169916
  • 1700–179923
  • 1800–189917
  • 1900–199917
  • 2000–209916
  • 2100–219910
  • 2200–229911
  • 2300–239921
  • 2400–249913
  • 2500–25996
  • 2600–26998
  • 2700–27993
  • 2800–28991
  • 2900–29991
  • 3000–30993
  • 3100–31993
  • 3200–32991
  • 3300–33991
  • 43
  • sortings29
  • graphs28
  • strings28
  • dfs and similar26
  • binary search26
  • combinatorics18
  • trees17
  • number theory15
  • geometry13
  • two pointers13
  • flows8
  • dsu8
  • bitmasks7
  • string suffix structures7
  • probabilities6
  • graph matchings5
  • hashing5
  • divide and conquer5
  • shortest paths5
  • ternary search3
  • meet-in-the-middle2
  • Other (5 tags)5
  • 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
    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.

    2020

    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.

    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
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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.

    2024

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

    Jan
    Feb
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    Apr
    May
    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.

    2025

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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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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    LessMore (max 38/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 71/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 42/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 26/day in 2021)

    2022

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 40/day in 2022)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    LessMore (max 4/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
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    May
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    Dec

    LessMore (max 9/day in 2025)

    +90
    2244
    2019-05-12 16:35Codeforces Round 559 (Div. 2)1+2642154
    2019-05-09 17:05Codeforces Round 558 (Div. 2)126+1031890
    2019-05-04 19:05Codeforces Round 557 (Div. 2) [based on Forethought Future Cup - Final Round]9+17871787