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tun

Open on Codeforces · Unique solved

Rating2746· 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
40
Unique solved
985
Submissions (all)
2,041
Years with activity
2015–2022

Solved by problem rating

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

  • Unrated378
  • 800–89922
  • 900–99912
  • 1000–109916
  • 1100–119921
  • 1200–129918
  • 1300–139926

Solved by topic

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

  • implementation161
  • math158
  • greedy156
  • constructive algorithms153
  • dp132
  • data structures105

Rating changes

2015

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2015

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2017-09-30 20:05MemSQL Start[c]UP 3.0 - Round 2 and Codeforces Round 437 (Div. 1)18+462746
2017-09-06 14:55Codeforces Round 433 (Div. 1, based on Olympiad of Metropolises)114-1162700
2017-08-24 19:05AIM Tech Round 4 (Div. 1)11+882816
2017-08-18 17:05Codeforces Round 429 (Div. 1)14+752728
2017-07-13 17:05Codeforces Round 424 (Div. 1, rated, based on VK Cup Finals)
1400–1499
26
  • 1500–159925
  • 1600–169935
  • 1700–179937
  • 1800–189929
  • 1900–199949
  • 2000–209931
  • 2100–219922
  • 2200–229944
  • 2300–239931
  • 2400–249936
  • 2500–259934
  • 2600–269920
  • 2700–279917
  • 2800–289921
  • 2900–299913
  • 3000–30996
  • 3100–31997
  • 3200–32996
  • 3300–33992
  • 3400–34991
  • brute force
    93
  • graphs78
  • binary search71
  • dfs and similar66
  • sortings55
  • trees48
  • combinatorics45
  • strings42
  • number theory42
  • bitmasks27
  • geometry23
  • two pointers22
  • dsu17
  • hashing17
  • shortest paths16
  • divide and conquer16
  • probabilities14
  • *special12
  • string suffix structures12
  • games11
  • interactive10
  • flows9
  • Other (8 tags)31
  • 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.

    2016

    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.

    2017

    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.

    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.

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 43/day in 2015)

    2016

    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 34/day in 2016)

    2017

    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 33/day in 2017)

    2018

    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 21/day in 2018)

    2021

    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 20/day in 2021)

    2022

    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 2022)

    34
    +22
    2653
    2017-07-11 18:45Codeforces Round 423 (Div. 1, rated, based on VK Cup Finals)9+1472631
    2017-06-17 16:35Codeforces Round 419 (Div. 1)34+962484
    2017-05-20 20:05Codeforces Round 415 (Div. 1)143-622388
    2017-05-04 16:50Codeforces Round 411 (Div. 1)70+292450
    2017-01-15 19:058VC Venture Cup 2017 - Elimination Round166-82421
    2017-01-12 18:35Codecraft-17 and Codeforces Round 391 (Div. 1 + Div. 2, combined)58+682429
    2016-12-17 18:35Codeforces Round 385 (Div. 1)70+472361