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_ja

Open on Codeforces · Unique solved

Rating2130· 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
39
Unique solved
368
Submissions (all)
577
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.

  • 800–89981
  • 900–99924
  • 1000–109938
  • 1100–119933
  • 1200–129929
  • 1300–139924
  • 1400–149933

Solved by topic

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

  • greedy203
  • math148
  • constructive algorithms111
  • implementation94
  • brute force74
  • dp63
  • sortings

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
2026-01-17 17:35Codeforces Round 1073 (Div. 1)454+52130
2025-12-27 17:35Good Bye 20251703-762125
2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)264+912201
2025-11-29 16:35Codeforces Round 1067 (Div. 2)21+1652110
2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)684
1500–1599
19
  • 1600–169918
  • 1700–179915
  • 1800–18999
  • 1900–199917
  • 2000–20994
  • 2100–21995
  • 2200–22993
  • 2300–23995
  • 2400–24994
  • 2500–25992
  • 2600–26992
  • 2700–27991
  • 2900–29991
  • 3100–31991
  • 58
  • data structures55
  • binary search39
  • number theory39
  • strings37
  • graphs34
  • two pointers31
  • games28
  • dfs and similar27
  • bitmasks26
  • combinatorics22
  • interactive20
  • trees18
  • geometry18
  • divide and conquer10
  • dsu9
  • shortest paths8
  • matrices8
  • probabilities8
  • ternary search2
  • hashing2
  • communication1
  • Other (5 tags)5
  • 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 31/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 13/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 4/day in 2026)

    +51
    1945
    2025-11-16 16:35Codeforces Round 1064 (Div. 2)515-31894
    2025-11-14 16:35Educational Codeforces Round 184 (Rated for Div. 2)2412-901897
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)1677-671987
    2025-10-24 16:35Codeforces Round 1061 (Div. 2)415-112054
    2025-10-19 16:35Codeforces Round 1060 (Div. 2)142+602065
    2025-10-10 16:50Codeforces Round 1057 (Div. 2)339+262005
    2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)297+481979