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Top rated · Stats

Thanhs

Open on Codeforces · Unique solved

Rating2196· Master

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
42
Unique solved
788
Submissions (all)
2,323
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated39
  • 800–899111
  • 900–99923
  • 1000–109938
  • 1100–119920
  • 1200–129925
  • 1300–139920

Solved by topic

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

  • math245
  • greedy235
  • dp201
  • implementation172
  • constructive algorithms171
  • data structures166

Rating changes

2022

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-06 10:15Codeforces Round 1069 (Div. 1)252+342196
2024-12-28 17:35Good Bye 2024: 2025 is NEAR527+532162
2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)274+1112109
2024-06-09 17:35Codeforces Global Round 26779+421998
2024-06-06 16:35Codeforces Round 951 (Div. 2)
1400–1499
23
  • 1500–159919
  • 1600–169928
  • 1700–179933
  • 1800–189936
  • 1900–199933
  • 2000–209945
  • 2100–219944
  • 2200–229937
  • 2300–239950
  • 2400–249947
  • 2500–259937
  • 2600–269922
  • 2700–279924
  • 2800–289915
  • 2900–29995
  • 3000–30997
  • 3100–31991
  • 3200–32993
  • 3300–33993
  • brute force
    143
  • binary search91
  • graphs80
  • strings76
  • dfs and similar75
  • trees74
  • bitmasks73
  • number theory70
  • combinatorics61
  • sortings59
  • divide and conquer38
  • two pointers37
  • dsu37
  • interactive29
  • probabilities26
  • hashing26
  • flows25
  • shortest paths21
  • games20
  • geometry19
  • matrices15
  • graph matchings14
  • Other (10 tags)47
  • 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.

    2023

    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.

    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 22/day in 2022)

    2023

    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 66/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 39/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 15/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 13/day in 2026)

    436
    +27
    1956
    2024-04-29 16:35Educational Codeforces Round 165 (Rated for Div. 2)559+131929
    2024-04-27 16:35Codeforces Round 941 (Div. 2)86+1091916
    2024-04-21 16:50Codeforces Round 940 (Div. 2) and CodeCraft-23863+161807
    2024-04-13 16:35Codeforces Round 939 (Div. 2)2233-631791
    2024-04-12 16:35Educational Codeforces Round 164 (Rated for Div. 2)605+441854
    2024-04-06 17:35Codeforces Global Round 252928-701810
    2024-03-16 17:00Codeforces Round 934 (Div. 1)970-501880