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HashimotoNanami

Open on Codeforces · Unique solved

Rating2356· 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
5
Unique solved
31
Submissions (all)
44
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.

  • Unrated3
  • 800–8992
  • 900–9992
  • 1000–10992
  • 1100–11992
  • 1200–12992
  • 1300–13993

Solved by topic

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

  • constructive algorithms15
  • greedy12
  • math12
  • implementation10
  • sortings8
  • data structures5

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
2020-07-04 17:15Codeforces Global Round 922+3632356
2020-07-01 15:35Codeforces Round 654 (Div. 2)24+3191993
2020-06-28 16:35Codeforces Round 653 (Div. 3)16+4011674
2020-06-25 16:35Educational Codeforces Round 90 (Rated for Div. 2)335+4651273
2020-06-07 16:50Codeforces Round 648 (Div. 2)102
1400–1499
3
  • 1600–16993
  • 1700–17991
  • 1900–19993
  • 2100–21991
  • 2300–23991
  • 2500–25991
  • 2600–26991
  • 2800–28991
  • brute force
    4
  • graphs3
  • binary search3
  • games3
  • divide and conquer2
  • dsu2
  • interactive2
  • dfs and similar2
  • combinatorics2
  • dp2
  • number theory2
  • bitmasks1
  • graph matchings1
  • trees1
  • two pointers1
  • strings1
  • shortest paths1
  • 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 13/day in 2020)

    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 1/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 3/day in 2026)

    +808
    808