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Top rated · Stats

hhcy

Open on Codeforces · Unique solved

Rating2175· 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
13
Unique solved
66
Submissions (all)
137
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.

  • Unrated6
  • 800–89914
  • 900–9993
  • 1100–11999
  • 1200–12993
  • 1300–13993
  • 1400–14995

Solved by topic

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

  • greedy34
  • math30
  • brute force22
  • implementation21
  • dp17
  • constructive algorithms15
  • sortings

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
2026-04-13 16:35Codeforces Round 1093 (Div. 1)296+162175
2025-06-03 16:35Educational Codeforces Round 179 (Rated for Div. 2)46+1012159
2025-05-24 16:35Codeforces Round 1026 (Div. 2)448-112058
2025-05-17 16:50Codeforces Round 1025 (Div. 2)483-292069
2025-04-26 11:35Codeforces Round 1021 (Div. 1)386
1500–1599
1
  • 1600–16995
  • 1700–17992
  • 1800–18991
  • 1900–19998
  • 2100–21992
  • 2200–22991
  • 2300–23991
  • 2400–24992
  • 12
  • dfs and similar8
  • trees7
  • number theory7
  • data structures7
  • graphs7
  • binary search6
  • bitmasks6
  • two pointers6
  • combinatorics5
  • strings4
  • shortest paths4
  • games4
  • interactive3
  • dsu3
  • divide and conquer2
  • geometry2
  • hashing2
  • probabilities1
  • 2-sat1
  • ternary search1
  • graph matchings1
  • 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
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 5/day in 2020)

    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 12/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 19/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 11/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 9/day in 2026)

    -13
    2098
    2024-04-21 16:50Codeforces Round 940 (Div. 2) and CodeCraft-2347+1252111
    2024-03-22 16:35Codeforces Round 936 (Div. 2)313+441986
    2024-03-15 16:35Educational Codeforces Round 163 (Rated for Div. 2)535+711942
    2024-02-11 11:35Codeforces Round 924 (Div. 2)514+1081871
    2024-01-15 16:50Codeforces Round 920 (Div. 3)18+3381763
    2023-12-19 17:05Codeforces Round 916 (Div. 3)29+4671425
    2023-11-17 16:50Codeforces Round 909 (Div. 3)331+476958