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pein531

Open on Codeforces · Unique solved

Rating2389· International 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
17
Unique solved
2,535
Submissions (all)
5,469
Years with activity
2023–2026

Solved by problem rating

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

  • 800–899522
  • 900–999171
  • 1000–1099158
  • 1100–1199158
  • 1200–1299161
  • 1300–1399160
  • 1400–1499156

Solved by topic

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

  • greedy967
  • math899
  • implementation878
  • brute force513
  • dp465
  • constructive algorithms420
  • data structures

Rating changes

2023

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

2023

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)169+612389
2025-08-07 17:35Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)125+1242328
2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)467+432204
2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)499+172161
2024-03-15 16:35
1500–1599156
  • 1600–1699144
  • 1700–1799126
  • 1800–1899109
  • 1900–1999132
  • 2000–209983
  • 2100–219986
  • 2200–229981
  • 2300–239934
  • 2400–249935
  • 2500–259921
  • 2600–269931
  • 2700–27996
  • 2800–28992
  • 2900–29992
  • 3100–31991
  • 395
  • sortings362
  • binary search321
  • strings267
  • number theory211
  • two pointers203
  • dfs and similar196
  • graphs179
  • bitmasks149
  • combinatorics138
  • trees127
  • dsu75
  • shortest paths55
  • geometry51
  • divide and conquer43
  • games41
  • hashing40
  • matrices24
  • probabilities20
  • interactive17
  • flows13
  • ternary search12
  • Other (8 tags)51
  • Jun
    Jul
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    Sep
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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
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    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 26/day in 2023)

    2024

    Download PNG

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

    Jan
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    Apr
    May
    Jun
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    LessMore (max 35/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 32/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 8/day in 2026)

    Educational Codeforces Round 163 (Rated for Div. 2)
    12
    +206
    2144
    2024-02-29 16:35Codeforces Round 930 (Div. 2)153+781938
    2024-02-23 16:35Educational Codeforces Round 162 (Rated for Div. 2)1360-361860
    2024-02-15 16:35Codeforces Round 926 (Div. 2)738+51896
    2024-02-11 11:35Codeforces Round 924 (Div. 2)163+1121891
    2024-01-30 16:45Codeforces Round 922 (Div. 2)242+1461779
    2024-01-18 16:35Educational Codeforces Round 161 (Rated for Div. 2)14740-2301633
    2024-01-13 16:35Codeforces Round 919 (Div. 2)87+2381863