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Top rated · Stats

qilby

Open on Codeforces · Unique solved

Rating2141· 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
79
Unique solved
1,404
Submissions (all)
3,688
Years with activity
2020–2026

Solved by problem rating

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

  • Unrated429
  • 800–899187
  • 900–99946
  • 1000–109957
  • 1100–119949
  • 1200–129952
  • 1300–139944

Solved by topic

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

  • greedy404
  • math366
  • implementation247
  • dp226
  • constructive algorithms226
  • brute force217
  • data structures

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-05-06 08:35Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)397-752141
2026-01-17 17:35Codeforces Round 1073 (Div. 1)337+202216
2025-11-16 16:35Codeforces Round 1064 (Div. 1)661-872196
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)376+112283
2025-10-30 19:35Pinely Round 5 (Div. 1 + Div. 2)
1400–1499
47
  • 1500–159939
  • 1600–169940
  • 1700–179949
  • 1800–189932
  • 1900–199944
  • 2000–209940
  • 2100–219940
  • 2200–229938
  • 2300–239935
  • 2400–249929
  • 2500–259930
  • 2600–269916
  • 2700–279914
  • 2800–289922
  • 2900–29995
  • 3000–30995
  • 3100–31992
  • 3200–32994
  • 3300–33994
  • 3400–34992
  • 3500–35993
  • 197
  • sortings126
  • binary search111
  • number theory99
  • dfs and similar97
  • bitmasks86
  • trees85
  • graphs83
  • strings83
  • combinatorics69
  • two pointers58
  • dsu49
  • divide and conquer44
  • games32
  • hashing30
  • interactive26
  • shortest paths25
  • flows20
  • probabilities17
  • geometry15
  • *special15
  • graph matchings15
  • Other (9 tags)38
  • 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.

    2021

    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.

    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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    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 8/day in 2020)

    2021

    Download PNG

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

    Jan
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    Mar
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    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 50/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    LessMore (max 69/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
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    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 41/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 32/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 32/day in 2026)

    170
    +51
    2272
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)610-582221
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)393+302279
    2025-08-28 17:35Codeforces Round 1046 (Div. 1)405-182249
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)472-52267
    2024-09-27 16:05Codeforces Round 975 (Div. 1)340+192272
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)512+112253
    2024-04-30 17:05Codeforces Round 942 (Div. 1)515-282242