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BUAA_bacon

Open on Codeforces · Unique solved

Rating2162· 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
102
Unique solved
1,535
Submissions (all)
4,484
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.

  • Unrated664
  • 800–899180
  • 900–99937
  • 1000–109939
  • 1100–119955
  • 1200–129951
  • 1300–139949

Solved by topic

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

  • greedy462
  • math402
  • implementation272
  • constructive algorithms269
  • brute force221
  • dp186
  • data structures

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
2026-01-17 17:35Codeforces Round 1073 (Div. 1)280+702162
2025-12-27 17:35Good Bye 20251061-102092
2025-12-11 16:35Codeforces Round 1070 (Div. 2)151+402102
2025-11-28 16:35Educational Codeforces Round 185 (Rated for Div. 2)522-322062
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)983
1400–1499
46
  • 1500–159936
  • 1600–169937
  • 1700–179957
  • 1800–189934
  • 1900–199959
  • 2000–209927
  • 2100–219930
  • 2200–229929
  • 2300–239933
  • 2400–249920
  • 2500–259918
  • 2600–269913
  • 2700–27997
  • 2800–28995
  • 2900–29992
  • 3000–30991
  • 3100–31993
  • 3200–32992
  • 3300–33991
  • 155
  • sortings136
  • binary search125
  • number theory89
  • bitmasks79
  • dfs and similar79
  • two pointers74
  • graphs73
  • strings66
  • combinatorics65
  • trees48
  • games38
  • dsu30
  • divide and conquer29
  • interactive26
  • geometry24
  • shortest paths18
  • hashing14
  • probabilities11
  • ternary search10
  • graph matchings8
  • matrices4
  • Other (8 tags)16
  • 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 39/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 37/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 52/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 42/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 27/day in 2026)

    -46
    2094
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)479+52140
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)992-512135
    2025-06-23 16:35Educational Codeforces Round 180 (Rated for Div. 2)15+1532186
    2025-06-21 16:35Codeforces Round 1033 (Div. 2) and CodeNite 2025204+542033
    2025-06-15 11:05Codeforces Round 1031 (Div. 2)62+1301979
    2025-06-12 16:35Codeforces Round 1030 (Div. 2)4653-1251849
    2025-06-03 16:35Educational Codeforces Round 179 (Rated for Div. 2)363+231974