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Inkyo

Open on Codeforces · Unique solved

Rating2430· 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
88
Unique solved
1,357
Submissions (all)
3,219
Years with activity
2019–2026

Solved by problem rating

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

  • Unrated214
  • 800–899170
  • 900–99933
  • 1000–109937
  • 1100–119952
  • 1200–129952
  • 1300–139947

Solved by topic

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

  • greedy589
  • math499
  • dp324
  • constructive algorithms317
  • implementation292
  • brute force288
  • data structures

Rating changes

2019

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2019

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)105+592430
2026-02-11 17:35Codeforces Round 1079 (Div. 1)69+1452371
2026-01-29 17:35Codeforces Round 1077 (Div. 1)165+852226
2026-01-17 17:35Codeforces Round 1073 (Div. 1)825-1022141
2026-01-07 17:35Hello 2026590
1400–1499
55
  • 1500–159942
  • 1600–169945
  • 1700–179964
  • 1800–189985
  • 1900–1999101
  • 2000–209961
  • 2100–219980
  • 2200–229957
  • 2300–239947
  • 2400–249934
  • 2500–259935
  • 2600–269918
  • 2700–279913
  • 2800–289910
  • 2900–29991
  • 3000–30992
  • 3200–32991
  • 3300–33991
  • 274
  • binary search204
  • sortings173
  • graphs137
  • dfs and similar134
  • number theory132
  • bitmasks124
  • combinatorics117
  • trees111
  • two pointers107
  • strings90
  • divide and conquer60
  • dsu54
  • interactive48
  • games48
  • shortest paths29
  • hashing27
  • probabilities23
  • geometry19
  • ternary search15
  • matrices9
  • flows9
  • Other (10 tags)31
  • 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 10/day in 2019)

    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 24/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 31/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Nov
    Dec

    LessMore (max 44/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
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    Dec

    LessMore (max 16/day in 2026)

    -6
    2243
    2025-12-27 17:35Good Bye 2025483+252249
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)650-372224
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)254+632261
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)549-502198
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)595-132248
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)591-652261
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)249+642326