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Top rated · Stats

tarjen

Open on Codeforces · Unique solved

Rating2489· 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
73
Unique solved
3,430
Submissions (all)
8,474
Years with activity
2017–2026

Solved by problem rating

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

  • Unrated1,694
  • 800–899275
  • 900–99960
  • 1000–109967
  • 1100–119973
  • 1200–129966
  • 1300–139971

Solved by topic

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

  • greedy785
  • math667
  • constructive algorithms467
  • dp435
  • implementation402
  • brute force370
  • data structures

Rating changes

2017

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2017

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-01-29 17:35Codeforces Round 1077 (Div. 1)313-882489
2026-01-17 17:35Codeforces Round 1073 (Div. 1)235-552577
2026-01-07 17:35Hello 2026147+62632
2025-12-27 17:35Good Bye 2025180-32626
2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)425
1400–1499
65
  • 1500–159955
  • 1600–169959
  • 1700–179981
  • 1800–189965
  • 1900–1999101
  • 2000–209978
  • 2100–219982
  • 2200–229966
  • 2300–239975
  • 2400–249997
  • 2500–259989
  • 2600–269979
  • 2700–279943
  • 2800–289933
  • 2900–299919
  • 3000–309916
  • 3100–319910
  • 3200–32993
  • 3300–33995
  • 3400–34991
  • 3500–35992
  • 346
  • sortings255
  • binary search230
  • graphs200
  • dfs and similar196
  • combinatorics177
  • number theory166
  • trees166
  • bitmasks160
  • two pointers138
  • strings122
  • dsu86
  • divide and conquer66
  • games61
  • shortest paths60
  • interactive56
  • probabilities49
  • geometry43
  • hashing42
  • flows29
  • graph matchings21
  • matrices20
  • Other (9 tags)56
  • 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
    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.

    2020

    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.

    2021

    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.

    2022

    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.

    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
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    Dec

    LessMore (max 16/day in 2017)

    2018

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 7/day in 2018)

    2020

    Download PNG

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

    Jan
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    May
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    LessMore (max 7/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 40/day in 2021)

    2022

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 55/day in 2022)

    2023

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 49/day in 2023)

    2024

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 48/day in 2024)

    2025

    Download PNG

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

    Jan
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    Mar
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    May
    Jun
    Jul
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    Sep
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    LessMore (max 26/day in 2025)

    2026

    Download PNG

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

    Jan
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    LessMore (max 37/day in 2026)

    -101
    2629
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)143-152730
    2025-05-31 16:35Codeforces Round 1028 (Div. 1)29+1282745
    2025-03-10 17:15Codeforces Round 1008 (Div. 1)127+12617
    2024-12-03 08:25Codeforces Round 990 (Div. 1)24+1292616
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)328-222487
    2024-09-27 16:05Codeforces Round 975 (Div. 1)130+442509
    2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)182+472465