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_Natsumi

Open on Codeforces · Unique solved

Rating2123· 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
21
Unique solved
391
Submissions (all)
918
Years with activity
2024–2026

Solved by problem rating

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

  • Unrated42
  • 800–89926
  • 900–9996
  • 1000–10995
  • 1100–11994
  • 1200–129912
  • 1300–139911

Solved by topic

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

  • dp169
  • greedy145
  • data structures144
  • math95
  • brute force74
  • trees69
  • implementation

Rating changes

2024

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)414+672123
2025-12-11 16:35Codeforces Round 1070 (Div. 2)24+1912056
2025-12-05 16:35Codeforces Round 1068 (Div. 2)771+01865
2025-11-28 16:35Educational Codeforces Round 185 (Rated for Div. 2)118+1571865
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)
1400–1499
7
  • 1500–15997
  • 1600–16997
  • 1700–179918
  • 1800–189921
  • 1900–199926
  • 2000–209931
  • 2100–219926
  • 2200–229933
  • 2300–239927
  • 2400–249934
  • 2500–259917
  • 2600–269912
  • 2700–279911
  • 2800–28996
  • 3000–30992
  • 65
  • binary search61
  • dfs and similar58
  • bitmasks50
  • graphs50
  • constructive algorithms43
  • sortings43
  • two pointers34
  • strings32
  • dsu31
  • divide and conquer30
  • combinatorics26
  • number theory23
  • shortest paths19
  • hashing18
  • geometry6
  • interactive5
  • string suffix structures5
  • ternary search3
  • games3
  • flows2
  • probabilities2
  • Other (5 tags)6
  • 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 21/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 19/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 1/day in 2026)

    1596
    +15
    1708
    2025-11-16 16:35Codeforces Round 1064 (Div. 2)152+1781693
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)7596-1231515
    2024-06-06 16:35Codeforces Round 951 (Div. 2)1602+341638
    2024-04-21 16:50Codeforces Round 940 (Div. 2) and CodeCraft-23982+821604
    2024-04-13 16:35Codeforces Round 939 (Div. 2)1530+711522
    2024-04-12 16:35Educational Codeforces Round 164 (Rated for Div. 2)5488-401451
    2024-04-08 16:50Codeforces Round 938 (Div. 3)1892+271491