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Top rated · Stats

andreystefanov

Open on Codeforces · Unique solved

Rating2429· 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
35
Unique solved
302
Submissions (all)
769
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated6
  • 800–89947
  • 900–9997
  • 1000–109911
  • 1100–119910
  • 1200–129913
  • 1300–139911

Solved by topic

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

  • greedy130
  • math110
  • dp79
  • constructive algorithms75
  • data structures67
  • implementation64
  • brute force

Rating changes

2022

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2022

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 2025302+122429
2025-10-12 17:05Codeforces Round 1058 (Div. 1)137+562417
2024-12-28 17:35Good Bye 2024: 2025 is NEAR371+212361
2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)576-302340
2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)169
1400–1499
11
  • 1500–15999
  • 1600–169911
  • 1700–179913
  • 1800–18997
  • 1900–199918
  • 2000–209922
  • 2100–219933
  • 2200–229920
  • 2300–239920
  • 2400–249912
  • 2500–25996
  • 2600–26995
  • 2700–27997
  • 2900–29991
  • 3000–30991
  • 3200–32991
  • 58
  • dfs and similar43
  • binary search40
  • sortings40
  • trees36
  • graphs36
  • bitmasks31
  • combinatorics29
  • number theory29
  • strings22
  • two pointers18
  • dsu18
  • divide and conquer16
  • interactive14
  • games12
  • geometry11
  • hashing9
  • probabilities8
  • shortest paths7
  • *special5
  • graph matchings5
  • ternary search3
  • Other (8 tags)11
  • 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 30/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 21/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 10/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 10/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 6/day in 2026)

    +86
    2370
    2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)610-302284
    2023-12-30 16:50Good Bye 2023681-222314
    2023-11-07 16:35Codeforces Round 908 (Div. 1)213+402336
    2023-10-22 13:05Codeforces Round 905 (Div. 1)195+582296
    2023-10-08 11:35Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round)361+132238
    2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)343+572225
    2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)1106-652168