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Top rated · Stats

zii.hrs

Open on Codeforces · Unique solved

Rating2185· 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
18
Unique solved
300
Submissions (all)
660
Years with activity
2019–2024

Solved by problem rating

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

  • Unrated17
  • 800–89954
  • 900–99920
  • 1000–109914
  • 1100–119915
  • 1200–129919
  • 1300–139916

Solved by topic

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

  • greedy137
  • math111
  • implementation93
  • constructive algorithms80
  • brute force59
  • dp54
  • data structures

Rating changes

2019

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2019

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-03-09 12:35Codeforces Round 857 (Div. 1)265+502185
2022-02-20 16:35Codeforces Round 772 (Div. 2)77+602135
2021-12-18 17:35Educational Codeforces Round 119 (Rated for Div. 2)88+712075
2021-12-12 17:15Codeforces Round 759 (Div. 2, based on Technocup 2022 Elimination Round 3)742-722004
2021-10-30 16:35Codeforces Round 752 (Div. 1)
1400–1499
21
  • 1500–159914
  • 1600–169916
  • 1700–179911
  • 1800–189911
  • 1900–199914
  • 2000–209916
  • 2100–21999
  • 2200–22995
  • 2300–23997
  • 2400–24999
  • 2500–25993
  • 2600–26994
  • 2700–27994
  • 2800–28991
  • 53
  • sortings41
  • binary search37
  • number theory31
  • graphs24
  • two pointers22
  • strings20
  • dfs and similar20
  • bitmasks17
  • trees16
  • combinatorics14
  • dsu13
  • geometry7
  • shortest paths7
  • interactive7
  • games7
  • divide and conquer6
  • hashing4
  • ternary search3
  • matrices3
  • graph matchings3
  • 2-sat2
  • Other (4 tags)5
  • 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
    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 8/day in 2019)

    2020

    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 25/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 16/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Nov
    Dec

    LessMore (max 8/day in 2022)

    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 8/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 2/day in 2024)

    803
    -66
    2076
    2021-10-29 16:35Educational Codeforces Round 116 (Rated for Div. 2)86+692142
    2021-10-17 13:20Codeforces Round 749 (Div. 1 + Div. 2, based on Technocup 2022 Elimination Round 1)372+802073
    2020-10-11 11:05Educational Codeforces Round 96 (Rated for Div. 2)163+721993
    2020-09-30 17:20Grakn Forces 2020791+671921
    2020-07-01 15:35Codeforces Round 654 (Div. 2)3253-921854
    2020-06-20 16:50Codeforces Round 651 (Div. 2)368+661946
    2020-06-18 17:15Codeforces Global Round 82070-141880