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cxt

Open on Codeforces · Unique solved

Rating2416· 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
13
Unique solved
1,516
Submissions (all)
3,494
Years with activity
2017–2025

Solved by problem rating

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

  • Unrated1,003
  • 800–89917
  • 900–99910
  • 1000–109915
  • 1100–119910
  • 1200–12997
  • 1300–139917

Solved by topic

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

  • math139
  • dp126
  • implementation118
  • greedy117
  • data structures101
  • constructive algorithms73
  • brute force

Rating changes

2017

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

2017

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2019-03-08 11:35Codeforces Round 545 (Div. 1)28+1222416
2018-10-21 10:10Codeforces Round 517 (Div. 1, based on Technocup 2019 Elimination Round 2)73+612294
2018-10-14 12:05Codeforces Round 516 (Div. 1, by Moscow Team Olympiad)155-22233
2018-10-04 09:35Codeforces Round 513 by Barcelona Bootcamp (rated, Div. 1 + Div. 2)223-42235
2018-04-29 15:45
1400–1499
9
  • 1500–159929
  • 1600–169931
  • 1700–179924
  • 1800–189921
  • 1900–199938
  • 2000–209927
  • 2100–219926
  • 2200–229939
  • 2300–239927
  • 2400–249933
  • 2500–259928
  • 2600–269930
  • 2700–279918
  • 2800–289912
  • 2900–299913
  • 3000–309910
  • 3100–31999
  • 3200–32995
  • 3300–33994
  • 3400–34992
  • 3500–35992
  • 73
  • graphs67
  • trees58
  • sortings49
  • dfs and similar49
  • binary search48
  • combinatorics44
  • strings39
  • number theory34
  • geometry27
  • probabilities23
  • two pointers22
  • divide and conquer22
  • bitmasks22
  • dsu21
  • shortest paths18
  • interactive16
  • hashing15
  • graph matchings12
  • flows10
  • games9
  • fft9
  • Other (7 tags)20
  • Jun
    Jul
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    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.

    2018

    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.

    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
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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
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    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.

    2022

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    2023

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    Aug
    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.

    2024

    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.

    2025

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

    Jan
    Feb
    Mar
    Apr
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    Jun
    Jul
    Aug
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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.

    May
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    LessMore (max 38/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 27/day in 2018)

    2019

    Download PNG

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

    Jan
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    2020

    Download PNG

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

    Jan
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    2021

    Download PNG

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

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    LessMore (max 33/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 33/day in 2022)

    2023

    Download PNG

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

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    LessMore (max 47/day in 2023)

    2024

    Download PNG

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

    Jan
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    Jun
    Jul
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    LessMore (max 34/day in 2024)

    2025

    Download PNG

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

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    LessMore (max 20/day in 2025)

    Codeforces Round 477 (rated, Div. 1, based on VK Cup 2018 Round 3)
    74
    +77
    2239
    2018-03-09 10:40Codeforces Round 469 (Div. 1)70+1112162
    2017-12-29 18:10Good Bye 2017248+912051
    2017-10-16 13:05Codeforces Round 441 (Div. 1, by Moscow Team Olympiad)271-91960
    2017-08-18 17:05Codeforces Round 429 (Div. 1)229+551969
    2017-07-31 16:35Codeforces Round 427 (Div. 2)4+2951914
    2017-07-30 16:35Codeforces Round 426 (Div. 2)1217-151619
    2017-07-24 16:35Codeforces Round 425 (Div. 2)452+811634