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NeroZein

Open on Codeforces · Unique solved

Rating2150· 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
112
Unique solved
1,309
Submissions (all)
3,823
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated17
  • 800–899265
  • 900–99963
  • 1000–109973
  • 1100–119963
  • 1200–129960
  • 1300–139956

Solved by topic

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

  • greedy514
  • math456
  • implementation410
  • dp320
  • brute force293
  • data structures271
  • constructive algorithms

Rating changes

2021

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

Jan
Feb
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May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-08-11 17:35EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)741+42150
2024-07-28 17:35Pinely Round 4 (Div. 1 + Div. 2)1138-472146
2024-07-18 16:35Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)264+882193
2024-06-30 17:35EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)104+2212105
2024-06-25 16:35
1400–1499
68
  • 1500–159956
  • 1600–169939
  • 1700–179953
  • 1800–189940
  • 1900–199975
  • 2000–209999
  • 2100–219981
  • 2200–229951
  • 2300–239945
  • 2400–249946
  • 2500–259932
  • 2600–269910
  • 2700–27996
  • 2800–28994
  • 2900–29993
  • 3000–30991
  • 3100–31992
  • 3200–32991
  • 268
  • binary search196
  • sortings180
  • dfs and similar139
  • trees116
  • graphs115
  • strings112
  • two pointers109
  • number theory108
  • bitmasks95
  • combinatorics89
  • dsu61
  • divide and conquer49
  • shortest paths36
  • interactive34
  • games26
  • hashing20
  • geometry19
  • probabilities11
  • flows9
  • graph matchings8
  • ternary search7
  • Other (8 tags)25
  • 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
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 39/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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    Dec

    LessMore (max 30/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
    Nov
    Dec

    LessMore (max 43/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 26/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 18/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 4/day in 2026)

    Codeforces Round 955 (Div. 2, with prizes from NEAR!)
    1768
    -63
    1884
    2024-04-30 17:05Codeforces Round 942 (Div. 1)823-271947
    2024-04-13 16:35Codeforces Round 939 (Div. 2)1920-1001974
    2024-04-12 16:35Educational Codeforces Round 164 (Rated for Div. 2)141+742074
    2024-03-30 17:35CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)1747-632000
    2024-03-01 16:35Codeforces Round 931 (Div. 2)127+722063
    2024-02-23 16:35Educational Codeforces Round 162 (Rated for Div. 2)488+41991
    2024-02-15 16:35Codeforces Round 926 (Div. 2)701-221987