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Trollbert

Open on Codeforces · Unique solved

Rating2331· International 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
56
Unique solved
1,378
Submissions (all)
3,763
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.

  • Unrated399
  • 800–899190
  • 900–99959
  • 1000–109949
  • 1100–119953
  • 1200–129960
  • 1300–139960

Solved by topic

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

  • greedy406
  • math368
  • implementation298
  • dp225
  • constructive algorithms222
  • brute force204
  • 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
2026-02-23 17:05Codeforces Round 1082 (Div. 1)440-702331
2025-12-27 17:35Good Bye 2025379-12401
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)154+752402
2025-09-24 14:50Codeforces Round 1053 (Div. 1)338-82327
2024-12-28 17:35Good Bye 2024: 2025 is NEAR326
1400–1499
53
  • 1500–159937
  • 1600–169931
  • 1700–179942
  • 1800–189943
  • 1900–199949
  • 2000–209937
  • 2100–219932
  • 2200–229945
  • 2300–239933
  • 2400–249939
  • 2500–259928
  • 2600–269912
  • 2700–279912
  • 2800–28996
  • 2900–29994
  • 3000–30992
  • 3100–31991
  • 3200–32991
  • 3500–35991
  • 193
  • sortings147
  • binary search115
  • strings102
  • number theory87
  • dfs and similar80
  • graphs76
  • trees68
  • bitmasks67
  • combinatorics63
  • two pointers61
  • divide and conquer42
  • games35
  • dsu32
  • geometry22
  • shortest paths18
  • hashing18
  • interactive16
  • probabilities14
  • matrices12
  • *special12
  • string suffix structures10
  • Other (7 tags)26
  • 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.

    2019

    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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    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
    Feb
    Mar
    Apr
    May
    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
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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.

    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.

    2024

    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.

    2025

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

    Jan
    Feb
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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.

    2026

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

    Jan
    Feb
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    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.

    May
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    LessMore (max 10/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 11/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 11/day in 2020)

    2021

    Download PNG

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

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    2022

    Download PNG

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

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    LessMore (max 12/day in 2022)

    2023

    Download PNG

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

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    LessMore (max 82/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 118/day in 2024)

    2025

    Download PNG

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

    Jan
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    LessMore (max 46/day in 2025)

    2026

    Download PNG

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

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    LessMore (max 32/day in 2026)

    +46
    2335
    2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)195+702289
    2024-04-27 16:35Codeforces Round 941 (Div. 1)491-82219
    2024-02-29 16:35Codeforces Round 930 (Div. 1)256+372227
    2024-01-27 16:45Codeforces Round 921 (Div. 1)167+1392190
    2024-01-18 16:35Educational Codeforces Round 161 (Rated for Div. 2)415-112051
    2023-12-30 16:50Good Bye 2023733+542062
    2023-12-23 17:35Pinely Round 3 (Div. 1 + Div. 2)751+322008