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AC_sahER

Open on Codeforces · Unique solved

Rating2145· 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
42
Unique solved
2,002
Submissions (all)
4,393
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.

  • Unrated570
  • 800–899292
  • 900–99977
  • 1000–109984
  • 1100–119990
  • 1200–1299103
  • 1300–139998

Solved by topic

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

  • greedy603
  • math551
  • implementation465
  • brute force307
  • constructive algorithms290
  • dp242
  • data structures

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
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2021-06-18 16:35Codeforces Round 726 (Div. 2)60+1042145
2021-06-06 16:35Codeforces Round 724 (Div. 2)149+682041
2021-06-04 16:35Educational Codeforces Round 110 (Rated for Div. 2)273+521973
2021-05-30 16:50Deltix Round, Spring 2021 (open for everyone, rated, Div. 1 + Div. 2)2129-741921
2021-05-28 16:35Codeforces Round 723 (Div. 2)
1400–1499
96
  • 1500–1599108
  • 1600–169996
  • 1700–179994
  • 1800–189962
  • 1900–199966
  • 2000–209951
  • 2100–219940
  • 2200–229935
  • 2300–239910
  • 2400–249916
  • 2500–25998
  • 2600–26993
  • 2700–27991
  • 2800–28991
  • 2900–29991
  • 209
  • sortings206
  • binary search167
  • strings137
  • number theory130
  • graphs127
  • dfs and similar121
  • two pointers92
  • bitmasks79
  • trees75
  • combinatorics69
  • dsu46
  • games41
  • shortest paths41
  • geometry38
  • interactive31
  • hashing25
  • divide and conquer15
  • probabilities14
  • ternary search10
  • flows8
  • matrices6
  • Other (9 tags)33
  • 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
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    LessMore (max 29/day in 2019)

    2020

    Download PNG

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

    Jan
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    LessMore (max 44/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 47/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    Jun
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    LessMore (max 373/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2023)

    2024

    Download PNG

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

    Jan
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    LessMore (max 38/day in 2024)

    2025

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
    Aug
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    LessMore (max 21/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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    LessMore (max 8/day in 2026)

    225
    +62
    1995
    2021-04-23 17:20Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2)2062-651933
    2021-04-11 16:35Divide by Zero 2021 and Codeforces Round 714 (Div. 2)294+251998
    2021-02-05 16:35Codeforces Round 699 (Div. 2)289+551973
    2020-09-24 16:35Codeforces Round 672 (Div. 2)1167-301918
    2020-07-19 11:00Codeforces Round 657 (Div. 2)346+871948
    2020-07-01 15:35Codeforces Round 654 (Div. 2)984+101861
    2020-04-15 17:05Codeforces Round 635 (Div. 2)254+1091851