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codingforenjoy

Open on Codeforces · Unique solved

Rating2609· International 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
16
Unique solved
83
Submissions (all)
156
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.

  • Unrated5
  • 800–89916
  • 900–9993
  • 1000–10995
  • 1100–11994
  • 1200–12992
  • 1300–13994

Solved by topic

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

  • greedy42
  • math35
  • implementation21
  • dp19
  • constructive algorithms18
  • data structures17
  • binary search

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)20+1792609
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)56+1452430
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)148+742285
2026-02-26 17:05Codeforces Round 1083 (Div. 2)42+832211
2026-02-25 16:35Educational Codeforces Round 187 (Rated for Div. 2)
1400–1499
3
  • 1500–15995
  • 1600–16995
  • 1700–17995
  • 1800–18994
  • 1900–19993
  • 2000–20992
  • 2100–21994
  • 2200–22993
  • 2300–23991
  • 2400–24994
  • 2500–25992
  • 2600–26992
  • 2900–29991
  • 13
  • brute force13
  • sortings13
  • strings9
  • dfs and similar8
  • trees7
  • combinatorics7
  • divide and conquer6
  • dsu6
  • bitmasks5
  • number theory5
  • probabilities4
  • two pointers4
  • games4
  • graphs4
  • interactive3
  • geometry2
  • shortest paths1
  • string suffix structures1
  • hashing1
  • ternary search1
  • fft1
  • Other (1 tag)1
  • 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.

    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 13/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 3/day in 2021)

    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 17/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 10/day in 2026)

    12
    +201
    2128
    2026-02-23 17:05Codeforces Round 1082 (Div. 2)18+2061927
    2026-02-21 16:35Codeforces Round 1081 (Div. 2)126+2171721
    2021-10-03 16:35Codeforces Round 746 (Div. 2)4686-831504
    2020-04-15 17:05Codeforces Round 635 (Div. 2)3325-11587
    2020-03-12 15:05Codeforces Round 627 (Div. 3)268+1191588
    2020-03-03 16:50Ozon Tech Challenge 2020 (Div.1 + Div.2, Rated, T-shirts + prizes!)5192-811469
    2020-02-13 16:35Codeforces Round 619 (Div. 2)4921-901550