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Top rated · Stats

ivan100sic

Open on Codeforces · Unique solved

Rating2865· 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
60
Unique solved
7,969
Submissions (all)
14,313
Years with activity
2011–2026

Solved by problem rating

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

  • Unrated322
  • 800–8991,015
  • 900–999332
  • 1000–1099380
  • 1100–1199370
  • 1200–1299357
  • 1300–1399353

Solved by topic

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

  • greedy2,619
  • math2,606
  • implementation2,300
  • dp1,675
  • constructive algorithms1,484
  • brute force1,483

Rating changes

2011

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2011

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2021-07-17 17:35Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine))19+882865
2019-12-29 17:05Good Bye 201918+1092777
2019-11-19 16:35Codeforces Round 601 (Div. 1)23+882668
2019-09-18 18:05Codeforces Round 586 (Div. 1 + Div. 2)16+1382580
2018-10-28 17:35Codeforces Round 519 by Botan Investments
1400–1499355
  • 1500–1599386
  • 1600–1699399
  • 1700–1799378
  • 1800–1899343
  • 1900–1999406
  • 2000–2099372
  • 2100–2199336
  • 2200–2299330
  • 2300–2399280
  • 2400–2499309
  • 2500–2599261
  • 2600–2699198
  • 2700–2799154
  • 2800–2899116
  • 2900–299981
  • 3000–309960
  • 3100–319940
  • 3200–329918
  • 3300–339910
  • 3400–34996
  • 3500–35992
  • data structures
    1,265
  • sortings951
  • binary search879
  • graphs779
  • number theory737
  • dfs and similar716
  • strings628
  • trees572
  • combinatorics547
  • bitmasks499
  • two pointers475
  • dsu279
  • geometry272
  • divide and conquer204
  • games199
  • shortest paths194
  • interactive181
  • probabilities168
  • hashing164
  • *special114
  • flows91
  • matrices89
  • Other (10 tags)338
  • Jun
    Jul
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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.

    2012

    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.

    2013

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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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
    Mar
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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.

    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
    Feb
    Mar
    Apr
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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.

    2017

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

    Jan
    Feb
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    Apr
    May
    Jun
    Jul
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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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    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.

    2019

    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.

    2020

    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.

    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
    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
    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
    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.

    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.

    May
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    LessMore (max 7/day in 2011)

    2012

    Download PNG

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

    Jan
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    LessMore (max 29/day in 2012)

    2013

    Download PNG

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

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    LessMore (max 19/day in 2013)

    2014

    Download PNG

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

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    LessMore (max 19/day in 2014)

    2015

    Download PNG

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

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    LessMore (max 11/day in 2015)

    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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    LessMore (max 74/day in 2018)

    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

    Download PNG

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

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    LessMore (max 34/day in 2021)

    2022

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

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    LessMore (max 47/day in 2022)

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    Download PNG

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

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    LessMore (max 45/day in 2023)

    2024

    Download PNG

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

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    LessMore (max 13/day in 2024)

    2025

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

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    LessMore (max 18/day in 2025)

    2026

    Download PNG

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

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    LessMore (max 6/day in 2026)

    140
    +2
    2442
    2018-10-07 19:05Lyft Level 5 Challenge 2018 - Elimination Round150-162440
    2018-08-17 16:50Codeforces Round 504 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final)56+572456
    2018-07-13 16:45Codeforces Round 497 (Div. 1)42+922399
    2018-02-25 18:05Codeforces Round 467 (Div. 1)85+282307
    2018-02-15 16:35ICM Technex 2018 and Codeforces Round 463 (Div. 1 + Div. 2, combined)200-72279
    2018-01-08 17:15Hello 2018147+512286
    2017-12-29 18:10Good Bye 2017680-712235