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Top rated · Stats

ecnerwala

Open on Codeforces · Unique solved

Rating3216· 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
219
Unique solved
3,367
Submissions (all)
6,624
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.

  • Unrated591
  • 800–899293
  • 900–99998
  • 1000–1099102
  • 1100–119993
  • 1200–1299116
  • 1300–1399

Solved by topic

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

  • greedy977
  • math938
  • implementation749
  • dp637
  • constructive algorithms611
  • data structures488

Rating changes

2012

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

Jan
Feb
Mar
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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
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)51-1163216
2026-04-13 16:35Codeforces Round 1093 (Div. 1)314-3643332
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)12-1483696
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)1+973844
2026-02-23 17:05Codeforces Round 1082 (Div. 1)
113
  • 1400–1499105
  • 1500–1599119
  • 1600–1699128
  • 1700–1799137
  • 1800–1899124
  • 1900–1999124
  • 2000–2099118
  • 2100–2199115
  • 2200–229998
  • 2300–239978
  • 2400–249998
  • 2500–259995
  • 2600–269977
  • 2700–279965
  • 2800–289962
  • 2900–299964
  • 3000–309956
  • 3100–319944
  • 3200–329960
  • 3300–339948
  • 3400–349938
  • 3500–3599108
  • brute force
    470
  • sortings321
  • graphs313
  • binary search287
  • trees265
  • dfs and similar252
  • combinatorics233
  • number theory225
  • strings182
  • bitmasks178
  • two pointers138
  • interactive107
  • dsu103
  • *special103
  • games89
  • geometry87
  • divide and conquer82
  • probabilities74
  • shortest paths67
  • hashing57
  • graph matchings43
  • flows42
  • Other (9 tags)143
  • 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
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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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    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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    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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    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
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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.

    2023

    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.

    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 12/day in 2012)

    2013

    Download PNG

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

    Jan
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    LessMore (max 42/day in 2013)

    2014

    Download PNG

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

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    LessMore (max 23/day in 2014)

    2015

    Download PNG

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

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    2016

    Download PNG

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

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    2017

    Download PNG

    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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    2019

    Download PNG

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

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    2020

    Download PNG

    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 39/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 29/day in 2023)

    2024

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

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    2025

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

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    2026

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

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    2
    +32
    3747
    2026-01-29 17:35Codeforces Round 1077 (Div. 1)2+493715
    2026-01-07 17:35Hello 20262+773666
    2025-12-27 17:35Good Bye 20255+373589
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1+2103552
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)93-2053342
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)6-83547
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)6-13555