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Top rated · Stats

Um_nik

Open on Codeforces · Unique solved

Rating3376· Legendary 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
307
Unique solved
4,567
Submissions (all)
7,355
Years with activity
2012–2026

Solved by problem rating

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

  • Unrated1,666
  • 800–899235
  • 900–99961
  • 1000–109983
  • 1100–119991
  • 1200–1299105
  • 1300–1399

Solved by topic

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

  • greedy1,018
  • math1,000
  • implementation744
  • dp698
  • constructive algorithms677
  • brute force553
  • data structures

Rating changes

2012

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2012

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-29 17:35Codeforces Round 1077 (Div. 1)4+1053376
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)71-1563271
2025-10-30 19:35Pinely Round 5 (Div. 1 + Div. 2)3+1123427
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)9+623315
2025-09-24 14:50Codeforces Round 1053 (Div. 1)
104
  • 1400–1499131
  • 1500–1599137
  • 1600–1699156
  • 1700–1799158
  • 1800–1899151
  • 1900–1999163
  • 2000–2099124
  • 2100–2199134
  • 2200–2299159
  • 2300–2399118
  • 2400–2499141
  • 2500–2599136
  • 2600–2699105
  • 2700–279992
  • 2800–289964
  • 2900–299970
  • 3000–309948
  • 3100–319936
  • 3200–329937
  • 3300–339922
  • 3400–349918
  • 3500–359922
  • 551
  • graphs368
  • binary search363
  • sortings359
  • dfs and similar310
  • trees275
  • combinatorics273
  • number theory264
  • bitmasks233
  • two pointers188
  • strings168
  • dsu109
  • games105
  • geometry103
  • probabilities94
  • interactive93
  • divide and conquer89
  • shortest paths81
  • hashing64
  • *special51
  • flows46
  • graph matchings42
  • Other (9 tags)148
  • Jun
    Jul
    Aug
    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.

    2013

    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.

    2014

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

    Jan
    Feb
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    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.

    2015

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

    Jan
    Feb
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    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
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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.

    2017

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

    Jan
    Feb
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    Apr
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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.

    2018

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

    Jan
    Feb
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    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
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    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
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    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
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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.

    2022

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

    Jan
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    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
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    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
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    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
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    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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    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.

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    LessMore (max 18/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 32/day in 2013)

    2014

    Download PNG

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

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    LessMore (max 62/day in 2014)

    2015

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

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    LessMore (max 31/day in 2015)

    2016

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

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    2017

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

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    2018

    Download PNG

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

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    LessMore (max 89/day in 2018)

    2019

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

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    2020

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

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    2021

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

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    LessMore (max 35/day in 2021)

    2022

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

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    2023

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

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    LessMore (max 27/day in 2023)

    2024

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

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    LessMore (max 11/day in 2024)

    2025

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

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    LessMore (max 11/day in 2025)

    2026

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

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    LessMore (max 6/day in 2026)

    55
    -120
    3253
    2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)23-633373
    2025-07-31 17:35Codeforces Round 1040 (Div. 1)10-93436
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)5+273445
    2025-05-31 16:35Codeforces Round 1028 (Div. 1)12-93418
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)14-233427
    2025-03-10 17:15Codeforces Round 1008 (Div. 1)3+1003450
    2025-02-11 16:35Codeforces Round 1004 (Div. 1)9+313350