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Top rated · Stats

VitalyKo

Open on Codeforces · Unique solved

Rating2174· 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
73
Unique solved
720
Submissions (all)
3,643
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated104
  • 800–899165
  • 900–99929
  • 1000–109928
  • 1100–119941
  • 1200–129934
  • 1300–139938

Solved by topic

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

  • greedy263
  • math241
  • implementation203
  • constructive algorithms145
  • brute force140
  • data structures116

Rating changes

2021

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-07 17:35Hello 2026263+1082174
2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)385-82066
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1115-312074
2025-12-11 16:35Codeforces Round 1070 (Div. 2)90+772105
2025-11-29 16:35Codeforces Round 1067 (Div. 2)537
1400–1499
32
  • 1500–159928
  • 1600–169919
  • 1700–179917
  • 1800–189926
  • 1900–199935
  • 2000–209928
  • 2100–219912
  • 2200–229920
  • 2300–239915
  • 2400–24996
  • 2500–259913
  • 2600–269911
  • 2700–27996
  • 2800–28995
  • 2900–29991
  • 3000–30991
  • 3100–31991
  • 3200–32993
  • 3300–33991
  • 3500–35991
  • dp
    113
  • binary search99
  • sortings94
  • strings66
  • bitmasks62
  • dfs and similar58
  • number theory54
  • trees52
  • graphs50
  • two pointers47
  • combinatorics37
  • interactive27
  • *special21
  • dsu21
  • games20
  • geometry19
  • hashing18
  • divide and conquer15
  • probabilities12
  • shortest paths10
  • graph matchings7
  • ternary search6
  • Other (8 tags)21
  • 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.

    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 7/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
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    Dec

    LessMore (max 170/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 23/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 50/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 150/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 41/day in 2026)

    -29
    2028
    2025-11-28 16:35Educational Codeforces Round 185 (Rated for Div. 2)121+742057
    2025-10-10 16:50Codeforces Round 1057 (Div. 2)370+291983
    2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)752-151954
    2025-10-05 18:35Codeforces Round 1056 (Div. 2)1224-731969
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)951+22042
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)924-972040
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)744+72137