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Top rated · Stats

rui-de

Open on Codeforces · Unique solved

Rating2029· Candidate 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
159
Unique solved
2,068
Submissions (all)
5,326
Years with activity
2014–2026

Solved by problem rating

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

  • Unrated489
  • 800–899205
  • 900–99970
  • 1000–109990
  • 1100–1199112
  • 1200–129997
  • 1300–139992

Solved by topic

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

  • implementation574
  • math530
  • greedy523
  • brute force318
  • constructive algorithms306
  • dp300
  • data structures

Rating changes

2014

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2014

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-05-06 08:35Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)470-902029
2026-04-28 16:50Codeforces Round 1095 (Div. 2)129+352119
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)1168-722084
2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)734+92156
2023-06-18 16:35Codeforces Round 880 (Div. 1)
1400–1499
89
  • 1500–159987
  • 1600–1699103
  • 1700–179995
  • 1800–189980
  • 1900–199986
  • 2000–209982
  • 2100–219976
  • 2200–229958
  • 2300–239941
  • 2400–249943
  • 2500–259927
  • 2600–269918
  • 2700–279913
  • 2800–28993
  • 2900–29996
  • 3000–30993
  • 3100–31991
  • 3200–32992
  • 247
  • sortings199
  • binary search175
  • strings160
  • dfs and similar155
  • graphs151
  • number theory120
  • trees115
  • *special99
  • two pointers93
  • bitmasks84
  • combinatorics73
  • dsu57
  • geometry50
  • hashing38
  • shortest paths35
  • games28
  • interactive27
  • divide and conquer23
  • probabilities20
  • string suffix structures10
  • flows10
  • Other (10 tags)41
  • 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.

    2015

    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.

    2016

    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.

    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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    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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    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.

    2020

    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.

    2021

    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.

    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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    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
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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
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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.

    2026

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

    Jan
    Feb
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    Jun
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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 38/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 29/day in 2015)

    2016

    Download PNG

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

    Jan
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    LessMore (max 38/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 40/day in 2017)

    2018

    Download PNG

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

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    LessMore (max 51/day in 2018)

    2019

    Download PNG

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

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    LessMore (max 33/day in 2019)

    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 17/day in 2021)

    2022

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

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    LessMore (max 94/day in 2022)

    2023

    Download PNG

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

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    LessMore (max 33/day in 2023)

    2024

    Download PNG

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

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    LessMore (max 14/day in 2024)

    2025

    Download PNG

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

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    LessMore (max 14/day in 2025)

    2026

    Download PNG

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

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    LessMore (max 30/day in 2026)

    485
    -30
    2147
    2023-05-28 17:05Codeforces Round 875 (Div. 1)125+1622177
    2023-05-25 16:35Educational Codeforces Round 149 (Rated for Div. 2)140+742015
    2023-05-14 16:35Codeforces Round 873 (Div. 1)727-851941
    2023-04-20 16:35Educational Codeforces Round 147 (Rated for Div. 2)314-52026
    2023-04-15 11:05Codeforces Round 866 (Div. 1)348+502031
    2023-04-08 16:05Codeforces Round 864 (Div. 2)196+461981
    2023-04-02 16:35Codeforces Round 862 (Div. 2)635-221935