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Top rated · Stats

nathan4690

Open on Codeforces · Unique solved

Rating2137· 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
117
Unique solved
797
Submissions (all)
1,380
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.

  • Unrated62
  • 800–899163
  • 900–99933
  • 1000–109937
  • 1100–119939
  • 1200–129939
  • 1300–139933

Solved by topic

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

  • greedy314
  • math307
  • constructive algorithms207
  • implementation188
  • brute force146
  • dp137
  • sortings

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
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)284+552137
2026-02-23 17:05Codeforces Round 1082 (Div. 1)474-72082
2026-02-11 17:35Codeforces Round 1079 (Div. 1)385+272089
2026-01-23 16:35Codeforces Round 1075 (Div. 2)413-122062
2026-01-17 17:35Codeforces Round 1073 (Div. 1)700
1400–1499
46
  • 1500–159925
  • 1600–169926
  • 1700–179932
  • 1800–189929
  • 1900–199931
  • 2000–209924
  • 2100–219928
  • 2200–229928
  • 2300–239922
  • 2400–249930
  • 2500–259921
  • 2600–269914
  • 2700–279915
  • 2800–28997
  • 2900–29995
  • 3000–30995
  • 3100–31991
  • 3200–32991
  • 3300–33991
  • 112
  • data structures110
  • binary search82
  • number theory78
  • strings68
  • bitmasks63
  • combinatorics58
  • two pointers50
  • graphs45
  • trees44
  • dfs and similar43
  • *special34
  • divide and conquer29
  • games29
  • interactive27
  • dsu22
  • geometry19
  • hashing19
  • probabilities17
  • shortest paths14
  • matrices13
  • flows11
  • Other (9 tags)30
  • Jun
    Jul
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    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
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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
    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
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    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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    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.

    May
    Jun
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    Dec

    LessMore (max 1/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 15/day in 2022)

    2023

    Download PNG

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

    Jan
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    LessMore (max 10/day in 2023)

    2024

    Download PNG

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

    Jan
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    Mar
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    May
    Jun
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    Dec

    LessMore (max 28/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
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    LessMore (max 20/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 10/day in 2026)

    -57
    2074
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)644-692131
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)733-362200
    2025-10-12 17:05Codeforces Round 1058 (Div. 1)162+1122236
    2025-07-06 17:35EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)1224-722124
    2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)315+712196
    2025-03-10 17:15Codeforces Round 1008 (Div. 1)427+172125
    2025-02-11 16:35Codeforces Round 1004 (Div. 1)614-222108