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hoangnoobpro

Open on Codeforces · Unique solved

Rating2121· 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
4,194
Submissions (all)
7,245
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.

  • Unrated169
  • 800–8991,056
  • 900–999344
  • 1000–1099395
  • 1100–1199421
  • 1200–1299413
  • 1300–1399331

Solved by topic

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

  • implementation1,622
  • greedy1,495
  • math1,465
  • brute force804
  • constructive algorithms732
  • sortings533

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
2025-07-27 16:35Codeforces Round 1039 (Div. 2)114+642121
2025-05-05 16:50Codeforces Round 1023 (Div. 2)216+262057
2025-02-02 16:35Codeforces Round 1002 (Div. 2)100+1202031
2025-01-04 17:05Hello 20251845-191911
2024-07-20 16:35Codeforces Round 960 (Div. 2)127+139
1400–1499266
  • 1500–1599181
  • 1600–1699143
  • 1700–1799101
  • 1800–189982
  • 1900–199973
  • 2000–209972
  • 2100–219941
  • 2200–229929
  • 2300–239923
  • 2400–249916
  • 2500–259916
  • 2600–26994
  • 2700–27998
  • 2800–28994
  • 3000–30992
  • 3100–31991
  • 3500–35993
  • strings
    385
  • dp380
  • *special353
  • data structures326
  • number theory315
  • binary search314
  • two pointers194
  • bitmasks153
  • dfs and similar142
  • graphs134
  • combinatorics108
  • games101
  • geometry82
  • trees79
  • dsu51
  • interactive46
  • shortest paths43
  • divide and conquer26
  • hashing26
  • graph matchings16
  • expression parsing15
  • ternary search15
  • Other (10 tags)54
  • 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 51/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 90/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 29/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)

    1930
    2024-06-06 16:35Codeforces Round 951 (Div. 2)302+1221791
    2024-04-12 16:35Educational Codeforces Round 164 (Rated for Div. 2)1429+351669
    2024-01-27 16:45Codeforces Round 921 (Div. 2)1678-31634
    2024-01-13 16:35Codeforces Round 919 (Div. 2)1613+271637
    2023-11-25 17:20CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!)2468-141610
    2023-11-17 16:50Codeforces Round 909 (Div. 3)306+811624
    2023-11-07 16:35Codeforces Round 908 (Div. 2)2847-451543