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rucaco

Open on Codeforces · Unique solved

Rating2427· 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
15
Unique solved
110
Submissions (all)
239
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.

  • 800–89920
  • 900–9996
  • 1000–10991
  • 1100–11998
  • 1200–12997
  • 1300–13997
  • 1400–14994

Solved by topic

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

  • greedy52
  • math41
  • dp29
  • implementation28
  • data structures25
  • brute force24
  • constructive algorithms

Rating changes

2023

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

2023

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 2026180+552427
2025-12-27 17:35Good Bye 2025100+1462372
2024-04-12 16:35Educational Codeforces Round 164 (Rated for Div. 2)16+1702226
2024-03-22 16:35Codeforces Round 936 (Div. 2)89+1102056
2024-03-15 16:35Educational Codeforces Round 163 (Rated for Div. 2)161
1500–1599
4
  • 1600–16995
  • 1700–17997
  • 1800–18995
  • 1900–19998
  • 2000–20994
  • 2100–21996
  • 2200–22998
  • 2300–23991
  • 2400–24995
  • 2500–25993
  • 2800–28991
  • 23
  • trees14
  • number theory14
  • binary search13
  • sortings12
  • combinatorics11
  • dfs and similar10
  • two pointers10
  • graphs10
  • strings10
  • bitmasks8
  • games6
  • shortest paths5
  • dsu5
  • interactive4
  • hashing4
  • divide and conquer4
  • graph matchings2
  • communication1
  • probabilities1
  • expression parsing1
  • geometry1
  • 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 15/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 9/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)

    +108
    1946
    2024-03-05 16:35Codeforces Round 932 (Div. 2)953+151838
    2024-03-01 16:35Codeforces Round 931 (Div. 2)385+831823
    2024-02-29 16:35Codeforces Round 930 (Div. 2)364+951740
    2024-02-06 17:00Codeforces Round 923 (Div. 3)708+481645
    2024-01-15 16:50Codeforces Round 920 (Div. 3)1248+631597
    2023-12-19 17:05Codeforces Round 916 (Div. 3)1337+981534
    2023-11-17 16:50Codeforces Round 909 (Div. 3)699+1861436