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Tikhon228

Open on Codeforces · Unique solved

Rating2481· 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
34
Unique solved
501
Submissions (all)
1,065
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.

  • Unrated268
  • 800–89925
  • 900–9994
  • 1000–109910
  • 1100–119912
  • 1200–12999
  • 1300–13998

Solved by topic

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

  • greedy110
  • math97
  • constructive algorithms70
  • implementation62
  • brute force46
  • dp45
  • 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
2024-08-30 17:05Codeforces Round 969 (Div. 1)147+372481
2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)399-412444
2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)182+62485
2024-04-30 17:05Codeforces Round 942 (Div. 1)549-1042479
2024-04-06 17:35Codeforces Global Round 25
1400–1499
17
  • 1500–159912
  • 1600–16999
  • 1700–179919
  • 1800–189912
  • 1900–199912
  • 2000–20998
  • 2100–219916
  • 2200–229911
  • 2300–23997
  • 2400–24993
  • 2500–25999
  • 2600–26999
  • 2700–27993
  • 2800–28998
  • 2900–29992
  • 3000–30993
  • 3100–31992
  • 3300–33991
  • 3500–35992
  • 37
  • sortings36
  • graphs31
  • trees26
  • number theory25
  • binary search25
  • dfs and similar22
  • bitmasks18
  • two pointers17
  • strings17
  • games12
  • geometry9
  • combinatorics9
  • interactive9
  • dsu7
  • shortest paths7
  • divide and conquer6
  • probabilities5
  • hashing4
  • graph matchings4
  • ternary search3
  • string suffix structures2
  • Other (3 tags)3
  • 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 23/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 36/day in 2020)

    2021

    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 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    Sep
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    Dec

    LessMore (max 1/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 31/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 25/day in 2024)

    216
    -14
    2583
    2023-11-07 16:35Codeforces Round 908 (Div. 1)35+1512597
    2023-09-10 16:35Codeforces Round 896 (Div. 1)189+132446
    2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)74+1312433
    2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)594-402302
    2023-07-29 17:05Codeforces Round 889 (Div. 1)188+572342
    2023-07-23 17:05Codeforces Round 887 (Div. 1)288-42285
    2023-06-24 17:05CodeTON Round 5 (Div. 1 + Div. 2, Rated, Prizes!)161+1082289