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Top rated · Stats

cr0n

Open on Codeforces · Unique solved

Rating2195· 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
13
Unique solved
881
Submissions (all)
2,001
Years with activity
2016–2025

Solved by problem rating

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

  • Unrated3
  • 800–89945
  • 900–99918
  • 1000–109918
  • 1100–119924
  • 1200–129928
  • 1300–139922

Solved by topic

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

  • greedy324
  • dp259
  • math253
  • implementation180
  • dfs and similar157
  • graphs157
  • data structures

Rating changes

2016

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2016

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2018-05-29 17:45Codeforces Round 485 (Div. 1)85+1042195
2018-05-27 17:50Avito Code Challenge 2018394-212091
2018-05-21 16:45Educational Codeforces Round 44 (Rated for Div. 2)97+352112
2018-05-15 16:45Codeforces Round 483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!]285-172077
2018-05-14 16:35Codeforces Round 482 (Div. 2)
1400–1499
25
  • 1500–159925
  • 1600–169944
  • 1700–179937
  • 1800–189958
  • 1900–199973
  • 2000–2099148
  • 2100–2199150
  • 2200–229981
  • 2300–239936
  • 2400–249926
  • 2500–259911
  • 2600–26995
  • 2800–28992
  • 2900–29991
  • 3000–30991
  • 151
  • constructive algorithms144
  • brute force136
  • trees118
  • binary search106
  • sortings105
  • combinatorics91
  • bitmasks69
  • number theory68
  • dsu62
  • strings53
  • two pointers48
  • divide and conquer42
  • shortest paths36
  • geometry27
  • games22
  • flows18
  • probabilities18
  • hashing17
  • ternary search13
  • 2-sat12
  • graph matchings11
  • Other (9 tags)43
  • 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
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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.

    2019

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

    Jan
    Feb
    Mar
    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.

    2020

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

    Jan
    Feb
    Mar
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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
    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.

    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
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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.

    2025

    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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    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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    LessMore (max 11/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 25/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 22/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 6/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 12/day in 2020)

    2022

    Download PNG

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

    Jan
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    LessMore (max 19/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 16/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 13/day in 2024)

    2025

    Download PNG

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

    Jan
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    LessMore (max 11/day in 2025)

    139
    +25
    2094
    2018-05-08 17:05Codeforces Round 480 (Div. 2)58+922069
    2018-03-24 17:50Codeforces Round 472 (rated, Div. 1, based on VK Cup 2018 Round 2)185+371977
    2017-08-24 19:05AIM Tech Round 4 (Div. 1)406-521940
    2016-12-06 16:35Codeforces Round 383 (Div. 1)191+701992
    2016-11-27 18:35Codeforces Round 382 (Div. 2)73+831922
    2016-11-23 18:35Codeforces Round 381 (Div. 2)54+1481839
    2016-11-20 11:05Codeforces Round 380 (Div. 2, Rated, Based on Technocup 2017 - Elimination Round 2)413+61691