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thai9cdb1

Open on Codeforces · Unique solved

Rating2136· 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
34
Unique solved
392
Submissions (all)
1,232
Years with activity
2015–2023

Solved by problem rating

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

  • Unrated72
  • 800–89926
  • 900–99917
  • 1000–109920
  • 1100–119913
  • 1200–129925
  • 1300–139919

Solved by topic

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

  • implementation112
  • math97
  • greedy88
  • dp66
  • constructive algorithms55
  • data structures48
  • brute force

Rating changes

2015

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2015

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2021-08-01 17:00Codeforces Round 736 (Div. 1)853-812136
2020-10-10 17:50Codeforces Global Round 111067-652217
2020-08-14 16:35Educational Codeforces Round 93 (Rated for Div. 2)5+1952282
2020-08-12 16:35Codeforces Round 664 (Div. 1)897-1102087
2019-07-20 18:05Codeforces Global Round 4570
1400–1499
14
  • 1500–159918
  • 1600–169933
  • 1700–179910
  • 1800–189928
  • 1900–199921
  • 2000–209913
  • 2100–219914
  • 2200–229912
  • 2300–23998
  • 2400–249910
  • 2500–25996
  • 2600–26996
  • 2700–27991
  • 2800–28992
  • 2900–29991
  • 3000–30992
  • 3100–31991
  • 48
  • binary search36
  • number theory35
  • strings32
  • graphs31
  • dfs and similar28
  • sortings25
  • trees22
  • two pointers17
  • bitmasks14
  • combinatorics13
  • dsu13
  • games12
  • geometry11
  • divide and conquer7
  • shortest paths7
  • hashing6
  • interactive5
  • graph matchings3
  • ternary search3
  • fft2
  • probabilities2
  • Other (5 tags)8
  • 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.

    2016

    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.

    2017

    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.

    2018

    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.

    2019

    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.

    2020

    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.

    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.

    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.

    May
    Jun
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    Dec

    LessMore (max 26/day in 2015)

    2016

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 26/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 23/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2018)

    2019

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
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    LessMore (max 16/day in 2019)

    2020

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 20/day in 2020)

    2021

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 35/day in 2021)

    2023

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 2/day in 2023)

    -48
    2197
    2018-12-16 17:05Avito Cool Challenge 201869+1162245
    2018-11-14 17:35Codeforces Round 520 (Div. 2)66+822129
    2018-11-12 16:35Educational Codeforces Round 54 (Rated for Div. 2)35+1212047
    2018-11-10 17:05Mail.Ru Cup 2018 Round 2542+01926
    2018-11-04 20:40Lyft Level 5 Challenge 2018 - Final Round (Open Div. 1)275-411926
    2018-10-11 16:50Educational Codeforces Round 52 (Rated for Div. 2)366-101967
    2018-10-05 16:35Codeforces Round 514 (Div. 2)704-571977