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nong

Open on Codeforces · Unique solved

Rating2221· 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
50
Unique solved
877
Submissions (all)
2,084
Years with activity
2017–2024

Solved by problem rating

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

  • Unrated148
  • 800–89951
  • 900–99924
  • 1000–109932
  • 1100–119924
  • 1200–129936
  • 1300–139935

Solved by topic

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

  • implementation228
  • greedy224
  • math213
  • constructive algorithms146
  • dp143
  • data structures130

Rating changes

2017

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2017

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2021-01-05 16:35Codeforces Round 694 (Div. 1)490-322221
2020-12-30 17:35Good Bye 2020810-272253
2020-11-15 17:05Codeforces Round 683 (Div. 1, by Meet IT)646-1002280
2020-06-18 17:15Codeforces Global Round 8214+482380
2019-12-29 17:05Good Bye 2019643-65
1400–1499
31
  • 1500–159949
  • 1600–169956
  • 1700–179955
  • 1800–189957
  • 1900–199974
  • 2000–209967
  • 2100–219941
  • 2200–229938
  • 2300–239921
  • 2400–249921
  • 2500–25998
  • 2600–26996
  • 2700–27991
  • 2800–28991
  • 3200–32991
  • brute force
    128
  • sortings92
  • graphs83
  • dfs and similar78
  • binary search78
  • strings67
  • trees65
  • number theory55
  • two pointers44
  • bitmasks41
  • dsu26
  • geometry24
  • combinatorics22
  • shortest paths15
  • interactive14
  • hashing14
  • games12
  • divide and conquer11
  • *special11
  • probabilities9
  • ternary search7
  • matrices5
  • Other (8 tags)22
  • Jun
    Jul
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    Sep
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    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.

    2018

    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.

    2019

    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.

    2020

    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.

    2021

    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.

    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.

    May
    Jun
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    Aug
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    Dec

    LessMore (max 12/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 39/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 32/day in 2019)

    2020

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 28/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
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    LessMore (max 25/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 11/day in 2022)

    2023

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 9/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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    LessMore (max 18/day in 2024)

    2332
    2019-12-21 13:05Codeforces Round 609 (Div. 1)22+1982397
    2019-12-17 17:35Codeforces Global Round 6703-562199
    2019-12-15 07:05Codeforces Round 607 (Div. 1)108+372255
    2019-12-14 13:05Codeforces Round 606 (Div. 1, based on Technocup 2020 Elimination Round 4)292-232218
    2019-10-16 17:05Codeforces Global Round 5165+952241
    2019-09-23 16:35Codeforces Round 588 (Div. 1)268+202146
    2019-04-24 16:35Codeforces Round 554 (Div. 2)83+512126