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piggy123

Open on Codeforces · Unique solved

Rating2577· 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
19
Unique solved
529
Submissions (all)
2,043
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated5
  • 800–89930
  • 900–9996
  • 1000–10997
  • 1100–119913
  • 1200–129911
  • 1300–13998

Solved by topic

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

  • data structures168
  • math167
  • dp159
  • greedy130
  • constructive algorithms113
  • trees93
  • graphs

Rating changes

2021

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

Jan
Feb
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May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)443-942577
2024-12-28 17:35Good Bye 2024: 2025 is NEAR50+1142671
2024-12-03 08:25Codeforces Round 990 (Div. 1)90+232557
2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)85+992534
2024-09-27 16:05Codeforces Round 975 (Div. 1)
1400–1499
10
  • 1500–15996
  • 1600–169914
  • 1700–17999
  • 1800–18998
  • 1900–199922
  • 2000–209913
  • 2100–219921
  • 2200–229911
  • 2300–239918
  • 2400–249938
  • 2500–259924
  • 2600–269927
  • 2700–279930
  • 2800–289928
  • 2900–299925
  • 3000–309932
  • 3100–319928
  • 3200–329926
  • 3300–339924
  • 3400–349912
  • 3500–359923
  • 92
  • brute force80
  • binary search79
  • dfs and similar74
  • implementation73
  • combinatorics64
  • bitmasks46
  • number theory40
  • divide and conquer40
  • dsu38
  • sortings37
  • strings30
  • two pointers28
  • shortest paths23
  • probabilities21
  • geometry20
  • flows17
  • hashing14
  • fft14
  • interactive13
  • games13
  • graph matchings11
  • Other (9 tags)36
  • 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.

    2022

    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.

    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
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    Dec

    LessMore (max 7/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 26/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    Sep
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    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 43/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 24/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 25/day in 2026)

    204
    +21
    2435
    2024-04-30 17:05Codeforces Round 942 (Div. 1)83+1402414
    2024-04-06 17:35Codeforces Global Round 25902-662274
    2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)147+1092340
    2024-03-15 16:35Educational Codeforces Round 163 (Rated for Div. 2)10+1802231
    2024-03-05 16:35Codeforces Round 932 (Div. 2)56+1502051
    2023-12-23 17:35Pinely Round 3 (Div. 1 + Div. 2)963+361901
    2023-10-22 13:05Codeforces Round 905 (Div. 2)981-731865