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Nine_Suns

Open on Codeforces · Unique solved

Rating2402· 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
314
Submissions (all)
1,308
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.

  • Unrated5
  • 800–89912
  • 900–9993
  • 1000–10992
  • 1100–11992
  • 1200–12996
  • 1300–13995

Solved by topic

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

  • dp157
  • math129
  • greedy86
  • combinatorics82
  • data structures76
  • trees55
  • constructive algorithms

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
2026-01-17 17:35Codeforces Round 1073 (Div. 1)261-112402
2025-12-27 17:35Good Bye 2025583-502413
2025-11-16 16:35Codeforces Round 1064 (Div. 1)47+1642463
2025-09-24 14:50Codeforces Round 1053 (Div. 1)259+372299
2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)221
1400–1499
5
  • 1500–15993
  • 1600–16991
  • 1700–17995
  • 1800–18992
  • 1900–199912
  • 2000–20997
  • 2100–21994
  • 2200–22997
  • 2300–239918
  • 2400–249910
  • 2500–259921
  • 2600–269919
  • 2700–279915
  • 2800–289916
  • 2900–299916
  • 3000–309934
  • 3100–319920
  • 3200–329921
  • 3300–339917
  • 3400–34996
  • 3500–359920
  • 53
  • graphs52
  • brute force44
  • dfs and similar42
  • bitmasks36
  • number theory31
  • implementation31
  • divide and conquer30
  • fft27
  • binary search27
  • probabilities26
  • sortings22
  • two pointers16
  • games16
  • strings16
  • interactive13
  • matrices12
  • hashing11
  • geometry10
  • flows9
  • dsu9
  • shortest paths7
  • Other (8 tags)17
  • 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 2/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 36/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 22/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 16/day in 2026)

    +105
    2262
    2025-04-26 11:35Codeforces Round 1021 (Div. 1)248+432157
    2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)1885-872114
    2024-12-28 17:35Good Bye 2024: 2025 is NEAR310+1022201
    2024-10-20 11:05Codeforces Round 980 (Div. 1)293+1072099
    2024-10-06 08:05Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)430+661992
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)562+1991926
    2024-08-10 16:35Codeforces Round 965 (Div. 2)5068+171727