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frogcatcher

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
73
Unique solved
903
Submissions (all)
2,214
Years with activity
2018–2026

Solved by problem rating

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

  • Unrated140
  • 800–899104
  • 900–99941
  • 1000–109949
  • 1100–119930
  • 1200–129950
  • 1300–139944

Solved by topic

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

  • math318
  • greedy301
  • implementation244
  • constructive algorithms168
  • brute force142
  • dp137
  • data structures

Rating changes

2018

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

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
2021-03-10 14:05Codeforces Round 706 (Div. 1)542-112180
2021-02-28 16:35Codeforces Global Round 131249-662191
2021-01-05 16:35Codeforces Round 694 (Div. 1)233+502257
2020-12-30 17:35Good Bye 2020797-102207
2020-11-02 16:35Codeforces Round 681 (Div. 1, based on VK Cup 2019-2020 - Final)440
1400–1499
41
  • 1500–159952
  • 1600–169945
  • 1700–179952
  • 1800–189937
  • 1900–199949
  • 2000–209937
  • 2100–219928
  • 2200–229929
  • 2300–239914
  • 2400–249920
  • 2500–259917
  • 2600–26996
  • 2700–27998
  • 2800–28994
  • 2900–29992
  • 3000–30992
  • 3200–32992
  • 123
  • sortings109
  • binary search86
  • number theory68
  • graphs65
  • dfs and similar58
  • strings57
  • bitmasks50
  • trees44
  • combinatorics41
  • two pointers40
  • geometry28
  • dsu27
  • games24
  • interactive21
  • *special20
  • shortest paths17
  • divide and conquer15
  • hashing14
  • probabilities10
  • flows6
  • string suffix structures5
  • Other (4 tags)11
  • Jun
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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).

    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.

    2020

    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.

    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).

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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.

    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.

    2025

    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 72/day in 2018)

    2019

    Download PNG

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

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    2020

    Download PNG

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

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    2021

    Download PNG

    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

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

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    2025

    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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    -29
    2217
    2020-08-30 16:35Codeforces Round 666 (Div. 1)334+312246
    2020-04-03 16:35Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov!222+1002215
    2020-03-09 16:35Educational Codeforces Round 83 (Rated for Div. 2)44+1242115
    2020-03-07 11:35Codeforces Round 626 (Div. 1, based on Moscow Open Olympiad in Informatics)587-441991
    2020-02-15 15:05Codeforces Round 620 (Div. 2)371+102035
    2020-02-09 16:05Codeforces Round 618 (Div. 1)301+1112025
    2020-01-29 16:35Educational Codeforces Round 81 (Rated for Div. 2)247+821914