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16777mt16

Open on Codeforces · Unique solved

Rating2389· International 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
9
Unique solved
557
Submissions (all)
1,267
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated1
  • 800–89916
  • 900–9992
  • 1000–10993
  • 1100–11992
  • 1200–12996
  • 1300–13993

Solved by topic

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

  • dp240
  • math200
  • data structures180
  • combinatorics147
  • greedy102
  • trees96
  • brute force

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-06 10:15Codeforces Round 1069 (Div. 1)4+4232389
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)81+3161966
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)3528-341650
2025-07-05 16:35Codeforces Round 1035 (Div. 2)493+1871684
2025-04-26 11:35Codeforces Round 1021 (Div. 2)
1400–1499
4
  • 1600–16992
  • 1700–17991
  • 1800–18992
  • 1900–19999
  • 2000–20999
  • 2100–219911
  • 2200–229911
  • 2300–239952
  • 2400–249951
  • 2500–259951
  • 2600–269924
  • 2700–279917
  • 2800–2899184
  • 2900–299948
  • 3000–30997
  • 3100–319920
  • 3200–32997
  • 3300–33993
  • 3400–34993
  • 3500–35998
  • 85
  • bitmasks74
  • probabilities72
  • graphs70
  • dfs and similar65
  • implementation60
  • constructive algorithms60
  • number theory58
  • binary search54
  • divide and conquer45
  • strings42
  • sortings39
  • dsu38
  • two pointers28
  • interactive23
  • fft21
  • hashing20
  • shortest paths18
  • string suffix structures18
  • games17
  • matrices16
  • geometry12
  • Other (8 tags)41
  • 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 20/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 30/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)

    281
    +266
    1497
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)4287+1431231
    2024-11-02 16:50Codeforces Round 984 (Div. 3)755+3831088
    2024-10-26 16:35Codeforces Round 982 (Div. 2)8517+272705
    2024-10-19 16:20Codeforces Round 979 (Div. 2)9218+433433