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xyx0711

Open on Codeforces · Unique solved

Rating2180· 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
17
Unique solved
404
Submissions (all)
973
Years with activity
2016–2026

Solved by problem rating

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

  • Unrated59
  • 800–89919
  • 900–9997
  • 1000–10995
  • 1100–11991
  • 1200–12998
  • 1300–13999

Solved by topic

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

  • greedy132
  • math121
  • constructive algorithms101
  • data structures90
  • dp84
  • implementation78
  • graphs

Rating changes

2016

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

2016

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2020-03-01 15:15Codeforces Round 625 (Div. 1, based on Technocup 2020 Final Round)495-362180
2020-02-17 17:50Codeforces Round 621 (Div. 1 + Div. 2)459-62216
2020-01-19 15:35Codeforces Round 614 (Div. 1)146+912222
2019-12-05 16:35Codeforces Round 604 (Div. 1)419-352131
2019-11-27 15:50Educational Codeforces Round 77 (Rated for Div. 2)
1400–1499
13
  • 1500–159917
  • 1600–169917
  • 1700–179925
  • 1800–189923
  • 1900–199924
  • 2000–209913
  • 2100–219911
  • 2200–229912
  • 2300–239912
  • 2400–249916
  • 2500–259914
  • 2600–269914
  • 2700–279912
  • 2800–28995
  • 2900–29995
  • 3000–30998
  • 3100–319913
  • 3200–329912
  • 3300–33998
  • 3400–34998
  • 3500–359914
  • 54
  • brute force52
  • sortings47
  • binary search40
  • dfs and similar39
  • combinatorics38
  • trees35
  • strings30
  • number theory28
  • bitmasks28
  • two pointers27
  • dsu18
  • fft17
  • games16
  • probabilities14
  • geometry14
  • interactive14
  • divide and conquer14
  • shortest paths13
  • hashing8
  • ternary search6
  • matrices4
  • Other (8 tags)11
  • Jun
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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.

    2017

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

    Jan
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    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.

    2018

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

    Jan
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    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).

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    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).

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    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
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    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
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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
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    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
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    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
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    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.

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    LessMore (max 23/day in 2016)

    2017

    Download PNG

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

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    2018

    Download PNG

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

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    2019

    Download PNG

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

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    2020

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

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    2021

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

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    2022

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

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

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    2024

    Download PNG

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

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    2026

    Download PNG

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

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    LessMore (max 3/day in 2026)

    36
    +101
    2166
    2019-11-19 16:35Codeforces Round 601 (Div. 1)480-452065
    2019-11-13 16:35Educational Codeforces Round 76 (Rated for Div. 2)96+572110
    2019-11-06 17:05Codeforces Round 599 (Div. 1)480-202053
    2019-10-20 11:05Codeforces Round 594 (Div. 1)317-112073
    2019-10-17 15:35Codeforces Round 593 (Div. 2)148+382084
    2019-07-30 16:35Codeforces Round 576 (Div. 1)191+1062046
    2019-05-15 16:35Educational Codeforces Round 65 (Rated for Div. 2)92+1101940