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andrei_C1

Open on Codeforces · Unique solved

Rating2151· 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
52
Unique solved
689
Submissions (all)
1,918
Years with activity
2020–2026

Solved by problem rating

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

  • Unrated70
  • 800–899141
  • 900–99920
  • 1000–109922
  • 1100–119933
  • 1200–129935
  • 1300–139923

Solved by topic

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

  • greedy262
  • math248
  • implementation157
  • data structures146
  • constructive algorithms135
  • brute force134

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-08-24 16:35Codeforces Round 1044 (Div. 2)44+1192151
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)832+182032
2025-07-31 17:35Codeforces Round 1040 (Div. 1)838-712014
2025-07-27 16:35Codeforces Round 1039 (Div. 2)161+522085
2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)
1400–1499
23
  • 1500–159930
  • 1600–169929
  • 1700–179925
  • 1800–189918
  • 1900–199932
  • 2000–209951
  • 2100–219933
  • 2200–229926
  • 2300–239919
  • 2400–249921
  • 2500–25999
  • 2600–26997
  • 2700–279911
  • 2800–28994
  • 2900–29991
  • 3000–30994
  • 3100–31991
  • 3200–32991
  • dp
    134
  • binary search92
  • sortings88
  • dfs and similar74
  • graphs71
  • trees71
  • number theory64
  • bitmasks54
  • two pointers53
  • strings48
  • combinatorics48
  • dsu28
  • divide and conquer25
  • games22
  • interactive19
  • geometry17
  • hashing15
  • shortest paths14
  • probabilities11
  • *special7
  • ternary search5
  • matrices5
  • Other (8 tags)26
  • 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 7/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 9/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    LessMore (max 32/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
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    Jun
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    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
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    Dec

    LessMore (max 46/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 27/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 19/day in 2026)

    745
    +49
    2033
    2025-05-17 16:50Codeforces Round 1025 (Div. 2)40+1801984
    2025-05-11 17:05Codeforces Round 1024 (Div. 2)1200-371804
    2025-05-05 16:50Codeforces Round 1023 (Div. 2)376+661841
    2025-05-01 16:35Codeforces Round 1022 (Div. 2)1181-71775
    2025-04-28 16:35Educational Codeforces Round 178 (Rated for Div. 2)710+351782
    2025-04-26 11:35Codeforces Round 1021 (Div. 2)479+261747
    2025-04-21 16:35Codeforces Round 1019 (Div. 2)694+661721