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Top rated · Stats

mathiasgw

Open on Codeforces · Unique solved

Rating2192· 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
33
Unique solved
1,846
Submissions (all)
3,794
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated495
  • 800–899194
  • 900–99947
  • 1000–109955
  • 1100–119971
  • 1200–129961
  • 1300–139980

Solved by topic

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

  • greedy617
  • math565
  • implementation381
  • dp370
  • constructive algorithms311
  • brute force294
  • data structures

Rating changes

2022

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-13 16:35Codeforces Round 1093 (Div. 1)378-282192
2026-02-23 17:05Codeforces Round 1082 (Div. 1)388-202220
2026-02-11 17:35Codeforces Round 1079 (Div. 1)331-52240
2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)9+1982245
2025-12-27 17:35Good Bye 2025945
1400–1499
82
  • 1500–159957
  • 1600–169949
  • 1700–179959
  • 1800–189963
  • 1900–199962
  • 2000–209959
  • 2100–219961
  • 2200–229961
  • 2300–239949
  • 2400–249964
  • 2500–259956
  • 2600–269943
  • 2700–279925
  • 2800–289921
  • 2900–299912
  • 3000–30995
  • 3100–31992
  • 3200–32995
  • 3300–33994
  • 3400–34992
  • 3500–35992
  • 283
  • binary search192
  • sortings191
  • number theory160
  • graphs151
  • dfs and similar145
  • trees143
  • bitmasks142
  • combinatorics140
  • two pointers110
  • strings100
  • divide and conquer64
  • games64
  • dsu61
  • geometry45
  • probabilities45
  • interactive41
  • hashing36
  • shortest paths33
  • string suffix structures15
  • ternary search15
  • fft14
  • Other (10 tags)63
  • Jun
    Jul
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    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.

    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
    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.

    2025

    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.

    2026

    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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 12/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 22/day in 2023)

    2024

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 29/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 39/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 24/day in 2026)

    +19
    2047
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1446-472028
    2025-12-11 16:35Codeforces Round 1070 (Div. 2)85+942075
    2025-11-28 16:35Educational Codeforces Round 185 (Rated for Div. 2)871-441981
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)519+52025
    2025-10-19 16:35Codeforces Round 1060 (Div. 2)202+522020
    2025-10-12 17:05Codeforces Round 1058 (Div. 2)125+761968
    2025-10-05 18:35Codeforces Round 1056 (Div. 2)584+101892