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SF1yer

Open on Codeforces · Unique solved

Rating2181· 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
46
Unique solved
1,927
Submissions (all)
4,038
Years with activity
2019–2026

Solved by problem rating

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

  • Unrated58
  • 800–899168
  • 900–99946
  • 1000–109966
  • 1100–119955
  • 1200–129962
  • 1300–139964

Solved by topic

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

  • greedy614
  • math605
  • dp562
  • implementation416
  • data structures416
  • constructive algorithms398

Rating changes

2019

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2019

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-09-24 14:50Codeforces Round 1053 (Div. 1)575-382181
2025-03-23 08:05Codeforces Round 1012 (Div. 1)136+992219
2024-12-03 08:25Codeforces Round 990 (Div. 1)392-42120
2024-10-20 11:05Codeforces Round 980 (Div. 1)441+272124
2024-10-06 08:05Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
1400–1499
74
  • 1500–159972
  • 1600–169958
  • 1700–179967
  • 1800–189972
  • 1900–199977
  • 2000–209963
  • 2100–2199106
  • 2200–229996
  • 2300–2399130
  • 2400–2499170
  • 2500–259997
  • 2600–2699106
  • 2700–279960
  • 2800–289945
  • 2900–299931
  • 3000–309940
  • 3100–319914
  • 3200–329914
  • 3300–33996
  • 3400–34996
  • 3500–35994
  • brute force
    394
  • graphs271
  • dfs and similar265
  • binary search256
  • sortings223
  • trees212
  • bitmasks192
  • combinatorics189
  • strings158
  • number theory155
  • two pointers122
  • dsu102
  • divide and conquer80
  • interactive72
  • shortest paths70
  • probabilities57
  • hashing54
  • games49
  • string suffix structures41
  • matrices38
  • geometry31
  • flows30
  • Other (9 tags)114
  • Jun
    Jul
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    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.

    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
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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
    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
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    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.

    2024

    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.

    2025

    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.

    2026

    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.

    May
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    LessMore (max 5/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 20/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 15/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2022)

    2023

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 33/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 54/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    LessMore (max 17/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
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    Dec

    LessMore (max 24/day in 2026)

    130
    +65
    2097
    2024-07-30 16:35Educational Codeforces Round 168 (Rated for Div. 2)424+222032
    2024-07-20 16:35Codeforces Round 960 (Div. 2)893-412010
    2024-07-15 16:35Codeforces Round 958 (Div. 2)504-132051
    2024-06-09 17:35Codeforces Global Round 26883+32064
    2024-05-31 12:05Codeforces Round 949 (Div. 2)216+272061
    2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)607+362034
    2024-03-16 17:00Codeforces Round 934 (Div. 1)995-791998