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boba5551

Open on Codeforces · Unique solved

Rating2200· 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
36
Unique solved
348
Submissions (all)
702
Years with activity
2011–2025

Solved by problem rating

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

  • Unrated1
  • 800–89923
  • 900–9999
  • 1000–109914
  • 1100–119910
  • 1200–129912
  • 1300–139917

Solved by topic

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

  • greedy137
  • dp110
  • math109
  • implementation89
  • data structures77
  • constructive algorithms53
  • brute force

Rating changes

2011

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2011

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-01-22 16:35Codeforces Round 767 (Div. 1)254+772200
2022-01-03 16:50Hello 2022774-12123
2021-12-27 16:35Educational Codeforces Round 120 (Rated for Div. 2)103+572124
2021-12-24 17:05Codeforces Global Round 181209-552067
2019-12-19 16:35Educational Codeforces Round 78 (Rated for Div. 2)93
1400–1499
11
  • 1500–159917
  • 1600–169923
  • 1700–179928
  • 1800–189914
  • 1900–199920
  • 2000–209922
  • 2100–219917
  • 2200–229924
  • 2300–239917
  • 2400–249924
  • 2500–259915
  • 2600–269914
  • 2700–27997
  • 2800–28995
  • 2900–29993
  • 3100–31991
  • 53
  • trees50
  • graphs49
  • binary search49
  • sortings47
  • dfs and similar46
  • combinatorics33
  • two pointers33
  • strings32
  • bitmasks31
  • number theory27
  • dsu17
  • divide and conquer15
  • probabilities9
  • interactive9
  • shortest paths8
  • hashing8
  • geometry6
  • games6
  • ternary search6
  • graph matchings5
  • flows5
  • Other (7 tags)15
  • 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.

    2014

    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.

    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
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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.

    2018

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

    Jan
    Feb
    Mar
    Apr
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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.

    2019

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

    Jan
    Feb
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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.

    2020

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

    Jan
    Feb
    Mar
    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.

    2021

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

    Jan
    Feb
    Mar
    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.

    2022

    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.

    2023

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

    Jan
    Feb
    Mar
    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.

    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.

    May
    Jun
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    Dec

    LessMore (max 8/day in 2011)

    2014

    Download PNG

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

    Jan
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    LessMore (max 4/day in 2014)

    2016

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2017)

    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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    LessMore (max 16/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 14/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 11/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 11/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 15/day in 2023)

    2025

    Download PNG

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

    Jan
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    LessMore (max 7/day in 2025)

    +57
    2122
    2019-12-17 17:35Codeforces Global Round 61172-732065
    2019-11-19 16:35Codeforces Round 601 (Div. 1)561-892138
    2019-11-06 17:05Codeforces Round 599 (Div. 1)182+572227
    2019-10-26 13:05Codeforces Round 596 (Div. 1, based on Technocup 2020 Elimination Round 2)166+602170
    2019-10-20 11:05Codeforces Round 594 (Div. 1)445-792110
    2019-09-23 16:35Codeforces Round 588 (Div. 1)310-162189
    2019-08-04 18:35Codeforces Round 577 (Div. 2)5+1802205