CF Elite Tracker
TopExploreDivisionsLearnPracticeUser solvedHelp
HelpLog inSign up

Top rated · Stats

hoangnguyen09022004

Open on Codeforces · Unique solved

Rating2122· 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
41
Unique solved
360
Submissions (all)
923
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.

  • Unrated6
  • 800–89943
  • 900–99910
  • 1000–10999
  • 1100–119912
  • 1200–129911
  • 1300–139913

Solved by topic

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

  • math147
  • greedy146
  • dp129
  • data structures85
  • constructive algorithms78
  • combinatorics64
  • brute force

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
2026-02-23 17:05Codeforces Round 1082 (Div. 1)718-922122
2026-02-11 17:35Codeforces Round 1079 (Div. 1)236+522214
2026-01-29 17:35Codeforces Round 1077 (Div. 1)183+992162
2026-01-07 17:35Hello 2026566+612063
2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)772
1400–1499
8
  • 1500–159910
  • 1600–169916
  • 1700–179917
  • 1800–189916
  • 1900–199915
  • 2000–209912
  • 2100–219920
  • 2200–229917
  • 2300–239918
  • 2400–249915
  • 2500–259910
  • 2600–269910
  • 2700–279911
  • 2800–289926
  • 2900–299921
  • 3000–30995
  • 3100–31998
  • 3300–33991
  • 63
  • implementation61
  • dfs and similar49
  • graphs46
  • sortings45
  • binary search44
  • number theory43
  • bitmasks41
  • trees40
  • two pointers26
  • divide and conquer24
  • probabilities24
  • flows23
  • strings22
  • games21
  • interactive14
  • dsu14
  • graph matchings11
  • shortest paths7
  • hashing6
  • matrices5
  • ternary search4
  • Other (9 tags)21
  • 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 3/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 17/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 23/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 12/day in 2026)

    -38
    2002
    2025-12-27 17:35Good Bye 20251286-162040
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1295-432056
    2025-12-11 16:35Codeforces Round 1070 (Div. 2)192+252099
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)237+1372074
    2025-10-24 16:35Codeforces Round 1061 (Div. 2)665-71937
    2025-10-10 16:50Codeforces Round 1057 (Div. 2)1597-701944
    2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)991-562014