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Top rated · Stats

EricWan

Open on Codeforces · Unique solved

Rating2509· 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
48
Unique solved
463
Submissions (all)
1,576
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.

  • Unrated19
  • 800–89954
  • 900–9999
  • 1000–109914
  • 1100–119919
  • 1200–129918
  • 1300–139915

Solved by topic

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

  • greedy203
  • math165
  • dp135
  • data structures110
  • constructive algorithms105
  • brute force100
  • implementation

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)191-82509
2026-01-29 17:35Codeforces Round 1077 (Div. 1)110+242517
2025-12-27 17:35Good Bye 2025238+142493
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)112+822479
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)
1400–1499
14
  • 1500–159915
  • 1600–169915
  • 1700–179927
  • 1800–189920
  • 1900–199920
  • 2000–209918
  • 2100–219921
  • 2200–229930
  • 2300–239920
  • 2400–249921
  • 2500–259922
  • 2600–269913
  • 2700–27998
  • 2800–289914
  • 2900–29997
  • 3000–30994
  • 3100–31994
  • 3200–32997
  • 3300–33993
  • 3400–34993
  • 3500–35999
  • 94
  • binary search64
  • sortings63
  • dfs and similar53
  • trees52
  • graphs48
  • combinatorics43
  • bitmasks42
  • number theory38
  • strings34
  • divide and conquer29
  • interactive26
  • two pointers25
  • dsu22
  • games22
  • probabilities18
  • shortest paths13
  • geometry12
  • ternary search9
  • hashing9
  • flows9
  • *special7
  • Other (5 tags)22
  • 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 32/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 40/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 37/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 26/day in 2026)

    114
    +96
    2397
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)325+222301
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)395+202279
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)232+682259
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)390+652191
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)463+52126
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)635+182121
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)1106-232103