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4ndr3i

Open on Codeforces · Unique solved

Rating2139· 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
37
Unique solved
454
Submissions (all)
851
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.

  • Unrated17
  • 800–89972
  • 900–99918
  • 1000–109919
  • 1100–119926
  • 1200–129919
  • 1300–139927

Solved by topic

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

  • greedy214
  • math177
  • implementation111
  • dp108
  • brute force93
  • constructive algorithms82
  • data structures

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
2024-07-20 16:35Codeforces Round 960 (Div. 2)99+702139
2024-07-15 16:35Codeforces Round 958 (Div. 2)41+1652069
2024-07-07 16:50Codeforces Round 956 (Div. 2) and ByteRace 2024813+01904
2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)2406-871904
2024-04-30 17:05Codeforces Round 942 (Div. 1)
1400–1499
22
  • 1500–159927
  • 1600–169925
  • 1700–179945
  • 1800–189936
  • 1900–199929
  • 2000–209918
  • 2100–219918
  • 2200–229911
  • 2300–239912
  • 2400–24996
  • 2500–25992
  • 2600–26992
  • 2700–27991
  • 2800–28991
  • 3200–32991
  • 78
  • sortings73
  • binary search66
  • dfs and similar56
  • graphs49
  • bitmasks47
  • trees45
  • number theory42
  • two pointers40
  • strings34
  • combinatorics25
  • dsu23
  • games16
  • divide and conquer14
  • shortest paths14
  • hashing11
  • geometry11
  • interactive10
  • probabilities5
  • flows4
  • ternary search4
  • string suffix structures4
  • Other (4 tags)5
  • 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 73/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 27/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 4/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 1/day in 2026)

    544
    +58
    1991
    2024-04-27 16:35Codeforces Round 941 (Div. 2)106+861933
    2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)1807-181847
    2024-02-29 16:35Codeforces Round 930 (Div. 2)29+2311865
    2024-02-17 17:35think-cell Round 1350+2771634
    2024-02-15 16:35Codeforces Round 926 (Div. 2)7684-531357
    2024-01-15 16:50Codeforces Round 920 (Div. 3)4271-171410
    2024-01-06 17:05Hello 20245309+131427