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marvinthang

Open on Codeforces · Unique solved

Rating2616· International 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
34
Unique solved
621
Submissions (all)
1,320
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated102
  • 800–89942
  • 900–99910
  • 1000–109918
  • 1100–119912
  • 1200–129961
  • 1300–139949

Solved by topic

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

  • math188
  • greedy174
  • dp133
  • implementation130
  • data structures122
  • brute force97
  • constructive algorithms

Rating changes

2021

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

2021

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-12-03 08:25Codeforces Round 990 (Div. 1)76+182616
2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)143+242598
2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)99+492574
2024-09-27 16:05Codeforces Round 975 (Div. 1)151+232525
2024-08-30 17:05Codeforces Round 969 (Div. 1)
1400–1499
28
  • 1500–159916
  • 1600–169914
  • 1700–179911
  • 1800–18997
  • 1900–199920
  • 2000–209915
  • 2100–219916
  • 2200–229920
  • 2300–239929
  • 2400–249927
  • 2500–259934
  • 2600–269928
  • 2700–279918
  • 2800–289914
  • 2900–299910
  • 3000–309910
  • 3100–31995
  • 3200–32992
  • 3400–34991
  • 3500–35992
  • 92
  • sortings87
  • binary search82
  • dfs and similar53
  • graphs51
  • trees51
  • number theory48
  • two pointers44
  • strings40
  • combinatorics38
  • bitmasks36
  • divide and conquer31
  • dsu24
  • games21
  • geometry17
  • probabilities16
  • hashing15
  • *special14
  • interactive13
  • matrices12
  • shortest paths11
  • string suffix structures6
  • Other (9 tags)29
  • 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.

    2022

    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.

    2024

    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.

    2025

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

    Jan
    Feb
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    Apr
    May
    Jun
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    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.

    2026

    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.

    May
    Jun
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    Dec

    LessMore (max 62/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
    Feb
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    May
    Jun
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    LessMore (max 34/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    Dec

    LessMore (max 48/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 4/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 1/day in 2026)

    186
    +3
    2502
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)42+1832499
    2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)65+2102316
    2022-12-16 16:35Educational Codeforces Round 140 (Rated for Div. 2)38+1342106
    2022-03-22 16:45Educational Codeforces Round 125 (Rated for Div. 2)150+831972
    2022-03-11 16:35Codeforces Round 777 (Div. 2)472+241889
    2022-02-23 12:10Codeforces Round 773 (Div. 2)591-191865
    2022-02-22 16:35Educational Codeforces Round 123 (Rated for Div. 2)432+321884