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Top rated · Stats

woohyun_jng

Open on Codeforces · Unique solved

Rating2405· 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
50
Unique solved
303
Submissions (all)
860
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated7
  • 800–89959
  • 900–99916
  • 1000–109917
  • 1100–119919
  • 1200–129918
  • 1300–139917

Solved by topic

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

  • greedy162
  • math143
  • constructive algorithms92
  • implementation79
  • brute force65
  • dp63
  • data structures

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

Count of submissions per UTC day (includes every verdict).

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)504-502405
2025-12-06 10:15Codeforces Round 1069 (Div. 1)86+592455
2025-11-16 16:35Codeforces Round 1064 (Div. 1)220+72396
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)754-982389
2025-10-12 17:05Codeforces Round 1058 (Div. 1)
1400–1499
12
  • 1500–159912
  • 1600–169915
  • 1700–179918
  • 1800–189917
  • 1900–199916
  • 2000–209911
  • 2100–219912
  • 2200–22995
  • 2300–23999
  • 2400–24997
  • 2500–25994
  • 2600–26992
  • 2700–27992
  • 2800–28991
  • 2900–29992
  • 3000–30993
  • 3100–31991
  • 3400–34991
  • 56
  • sortings48
  • binary search41
  • number theory32
  • trees24
  • bitmasks24
  • graphs23
  • dfs and similar21
  • combinatorics21
  • two pointers21
  • strings20
  • games19
  • interactive11
  • geometry10
  • dsu9
  • divide and conquer8
  • hashing8
  • probabilities6
  • shortest paths5
  • matrices4
  • ternary search4
  • flows3
  • Other (6 tags)8
  • 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 31/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 91/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 7/day in 2026)

    42
    +166
    2487
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)424-12321
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)210+552322
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)494+102267
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)478-442257
    2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)807-502301
    2025-05-31 16:35Codeforces Round 1028 (Div. 1)92+1502351
    2025-05-11 17:05Codeforces Round 1024 (Div. 1)405-132201