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NanYan

Open on Codeforces · Unique solved

Rating2781· 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
12
Unique solved
73
Submissions (all)
116
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.

  • Unrated14
  • 800–89917
  • 900–9992
  • 1000–10993
  • 1100–11993
  • 1200–12994
  • 1300–13993

Solved by topic

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

  • math46
  • greedy35
  • constructive algorithms29
  • brute force20
  • dp18
  • implementation15
  • 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
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)10+1892781
2026-04-13 16:35Codeforces Round 1093 (Div. 1)2+4632592
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)88+2182129
2024-03-01 16:35Codeforces Round 931 (Div. 2)736-31911
2024-02-17 17:35think-cell Round 1
1400–1499
3
  • 1500–15993
  • 1600–16991
  • 1700–17994
  • 1800–18993
  • 1900–19993
  • 2000–20992
  • 2100–21991
  • 2200–22991
  • 2300–23991
  • 2400–24992
  • 2500–25991
  • 2600–26991
  • 2700–27991
  • 12
  • data structures10
  • bitmasks9
  • trees8
  • sortings8
  • combinatorics8
  • strings8
  • number theory8
  • interactive7
  • games6
  • divide and conquer5
  • dsu4
  • graphs3
  • probabilities3
  • geometry3
  • two pointers3
  • dfs and similar2
  • communication2
  • string suffix structures1
  • hashing1
  • 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.

    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 11/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 7/day in 2024)

    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)

    361
    +158
    1914
    2024-02-15 16:35Codeforces Round 926 (Div. 2)747+561756
    2024-02-06 17:00Codeforces Round 923 (Div. 3)768+701700
    2024-01-27 16:45Codeforces Round 921 (Div. 2)1073+1801630
    2024-01-13 16:35Codeforces Round 919 (Div. 2)2200+1581450
    2024-01-06 17:05Hello 20245635+2001292
    2023-12-30 16:50Good Bye 20231224+4951092
    2023-12-28 17:05Codeforces Round 918 (Div. 4)661+597597