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xyf007

Open on Codeforces · Unique solved

Rating2550· 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
53
Unique solved
1,047
Submissions (all)
2,252
Years with activity
2018–2024

Solved by problem rating

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

  • Unrated35
  • 800–89972
  • 900–99913
  • 1000–109918
  • 1100–119916
  • 1200–129930
  • 1300–139928

Solved by topic

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

  • greedy312
  • math303
  • dp282
  • implementation234
  • data structures233
  • constructive algorithms195

Rating changes

2018

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2023-09-18 16:50CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)271-282550
2022-05-19 16:35Codeforces Round 792 (Div. 1 + Div. 2)128+182578
2022-04-23 17:05Codeforces Global Round 20229-162560
2022-04-19 16:35Codeforces Round 783 (Div. 1)195-372576
2021-10-25 08:35Codeforces Round 751 (Div. 1)56
1400–1499
38
  • 1500–159941
  • 1600–169940
  • 1700–179943
  • 1800–189956
  • 1900–199962
  • 2000–209976
  • 2100–219976
  • 2200–229959
  • 2300–239949
  • 2400–249958
  • 2500–259945
  • 2600–269948
  • 2700–279935
  • 2800–289929
  • 2900–299920
  • 3000–309919
  • 3100–319914
  • 3200–32999
  • 3300–33998
  • 3400–34996
  • 3500–35994
  • brute force
    150
  • graphs141
  • dfs and similar133
  • binary search126
  • sortings119
  • trees105
  • combinatorics81
  • strings79
  • two pointers74
  • number theory72
  • bitmasks55
  • dsu46
  • shortest paths38
  • divide and conquer33
  • geometry33
  • hashing31
  • probabilities24
  • flows23
  • games21
  • string suffix structures19
  • interactive18
  • *special15
  • Other (8 tags)56
  • Jun
    Jul
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    Sep
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    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.

    2019

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    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.

    2020

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    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
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    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
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    Apr
    May
    Jun
    Jul
    Aug
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    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
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    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
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    LessMore (max 16/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 20/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 15/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 28/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
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    LessMore (max 18/day in 2022)

    2023

    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 28/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 6/day in 2024)

    +39
    2613
    2021-10-17 13:20Codeforces Round 749 (Div. 1 + Div. 2, based on Technocup 2022 Elimination Round 1)85+512574
    2021-09-12 17:05Codeforces Global Round 16269-232523
    2021-08-29 17:05Deltix Round, Summer 2021 (open for everyone, rated, Div. 1 + Div. 2)113+582546
    2021-08-24 17:05Codeforces Round 740 (Div. 1, based on VK Cup 2021 - Final (Engine))79+922488
    2021-08-01 17:00Codeforces Round 736 (Div. 1)124+972396
    2021-07-25 17:20Codeforces Global Round 15294+452299
    2021-07-22 17:05Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2)313+352254