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Top rated · Stats

Hisu

Open on Codeforces · Unique solved

Rating2135· 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
147
Unique solved
858
Submissions (all)
2,147
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.

  • Unrated14
  • 800–899253
  • 900–99954
  • 1000–109941
  • 1100–119959
  • 1200–129948
  • 1300–139957

Solved by topic

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

  • greedy387
  • math352
  • implementation227
  • constructive algorithms211
  • brute force168
  • dp149
  • 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
2025-12-27 17:35Good Bye 2025614+372135
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)768+52098
2025-12-11 16:35Codeforces Round 1070 (Div. 2)103+722093
2025-12-06 10:15Codeforces Round 1069 (Div. 1)350+552021
2025-12-05 16:35Codeforces Round 1068 (Div. 2)237
1400–1499
38
  • 1500–159938
  • 1600–169945
  • 1700–179942
  • 1800–189934
  • 1900–199934
  • 2000–209925
  • 2100–219928
  • 2200–229919
  • 2300–23998
  • 2400–249913
  • 2500–25994
  • 2600–26991
  • 2700–27992
  • 2800–28991
  • 118
  • sortings107
  • binary search89
  • number theory74
  • strings74
  • bitmasks67
  • dfs and similar65
  • two pointers60
  • graphs53
  • combinatorics49
  • trees46
  • dsu30
  • games19
  • divide and conquer19
  • geometry18
  • shortest paths12
  • probabilities11
  • hashing10
  • interactive10
  • ternary search4
  • string suffix structures3
  • 2-sat3
  • Other (8 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.

    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
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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
    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.

    2025

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

    Jan
    Feb
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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.

    2026

    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.

    May
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    LessMore (max 20/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 16/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 28/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 21/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
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    LessMore (max 17/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 28/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 11/day in 2026)

    +56
    1966
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)1268-201910
    2025-11-16 16:35Codeforces Round 1064 (Div. 2)120+891930
    2025-11-14 16:35Educational Codeforces Round 184 (Rated for Div. 2)3552-1101841
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)1061+21951
    2025-07-05 16:35Codeforces Round 1035 (Div. 2)120+1411949
    2025-06-23 16:35Educational Codeforces Round 180 (Rated for Div. 2)211+1341808
    2025-06-21 16:35Codeforces Round 1033 (Div. 2) and CodeNite 20251742+61674