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chaynflow

Open on Codeforces · Unique solved

Rating2190· 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
8
Unique solved
467
Submissions (all)
1,059
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated7
  • 800–89923
  • 900–9997
  • 1000–10998
  • 1100–11995
  • 1200–12997
  • 1300–13999

Solved by topic

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

  • dp155
  • greedy153
  • math141
  • data structures107
  • constructive algorithms106
  • graphs67
  • binary search

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

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)416-382190
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)105+1722228
2025-09-24 14:50Codeforces Round 1053 (Div. 1)637+322056
2025-04-26 11:35Codeforces Round 1021 (Div. 2)62+1532024
2025-01-22 14:05Codeforces Round 1000 (Div. 2)492
1400–1499
9
  • 1500–159911
  • 1600–16997
  • 1700–17998
  • 1800–189920
  • 1900–199917
  • 2000–209925
  • 2100–219914
  • 2200–229925
  • 2300–239926
  • 2400–249928
  • 2500–259925
  • 2600–269911
  • 2700–279921
  • 2800–289928
  • 2900–299914
  • 3000–309929
  • 3100–319925
  • 3200–329915
  • 3300–339913
  • 3400–34999
  • 3500–359921
  • 66
  • implementation61
  • brute force60
  • sortings60
  • dfs and similar57
  • trees54
  • combinatorics52
  • interactive50
  • number theory39
  • strings38
  • bitmasks37
  • two pointers27
  • dsu25
  • divide and conquer24
  • probabilities18
  • string suffix structures16
  • hashing13
  • games12
  • shortest paths12
  • fft10
  • flows9
  • matrices9
  • Other (8 tags)32
  • 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 19/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 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 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 18/day in 2026)

    +154
    1871
    2024-11-15 14:35Codeforces Round 987 (Div. 2)80+3791717
    2024-10-20 11:05Codeforces Round 980 (Div. 2)10+6441338
    2024-10-06 08:05Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)379+694694