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votranngocvy

Open on Codeforces · Unique solved

Rating2202· 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
29
Unique solved
700
Submissions (all)
1,482
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.

  • Unrated35
  • 800–899135
  • 900–99927
  • 1000–109937
  • 1100–119934
  • 1200–129928
  • 1300–139925

Solved by topic

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

  • implementation187
  • math182
  • greedy182
  • dp179
  • data structures171
  • dfs and similar116
  • brute force

Rating changes

2021

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

Jan
Feb
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Apr
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
2025-12-05 16:35Codeforces Round 1068 (Div. 2)2+2792202
2024-08-15 16:35Educational Codeforces Round 169 (Rated for Div. 2)425+571923
2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)871+831866
2024-08-04 16:35Codeforces Round 963 (Div. 2)432+1081783
2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)
1400–1499
11
  • 1500–159922
  • 1600–169931
  • 1700–179927
  • 1800–189936
  • 1900–199952
  • 2000–209948
  • 2100–219942
  • 2200–229932
  • 2300–239923
  • 2400–249925
  • 2500–259912
  • 2600–26995
  • 2700–27997
  • 2800–28994
  • 2900–29992
  • 112
  • trees98
  • binary search93
  • sortings92
  • graphs90
  • strings63
  • number theory56
  • constructive algorithms56
  • two pointers48
  • dsu45
  • combinatorics42
  • divide and conquer40
  • bitmasks39
  • shortest paths34
  • geometry21
  • hashing16
  • probabilities11
  • string suffix structures10
  • games9
  • graph matchings7
  • *special6
  • matrices5
  • Other (6 tags)12
  • 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
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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
    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
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    Jun
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    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.

    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
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    Dec

    LessMore (max 3/day in 2021)

    2022

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 12/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 20/day in 2023)

    2024

    Download PNG

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

    Jan
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    May
    Jun
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    Dec

    LessMore (max 17/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
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    Dec

    LessMore (max 38/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 15/day in 2026)

    1786
    +29
    1675
    2024-07-20 16:35Codeforces Round 960 (Div. 2)1541+341646
    2024-06-27 16:35Educational Codeforces Round 167 (Rated for Div. 2)3161-291612
    2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)1511+321641
    2024-03-15 16:35Educational Codeforces Round 163 (Rated for Div. 2)989+961609
    2023-08-24 16:50Codeforces Round 894 (Div. 3)466+1241513
    2023-08-07 16:50Codeforces Round 891 (Div. 3)1303+971389
    2023-07-29 17:05Codeforces Round 889 (Div. 2)9016-691292