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zzz13579zzz

Open on Codeforces · Unique solved

Rating2378· 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
51
Unique solved
346
Submissions (all)
1,097
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.

  • Unrated31
  • 800–89963
  • 900–99912
  • 1000–109913
  • 1100–119914
  • 1200–129921
  • 1300–139915

Solved by topic

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

  • greedy163
  • math142
  • constructive algorithms81
  • dp73
  • implementation66
  • brute force66
  • data structures

Rating changes

2024

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2024

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)50+1782378
2026-04-13 16:35Codeforces Round 1093 (Div. 1)70+2172200
2026-04-07 16:50Codeforces Round 1091 (Div. 2) and CodeCraft 2697+1311983
2026-03-29 16:50Codeforces Round 1089 (Div. 2)1810-551852
2026-03-28 17:15Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)
1400–1499
15
  • 1500–159912
  • 1600–169915
  • 1700–179916
  • 1800–18999
  • 1900–199914
  • 2000–209911
  • 2100–219913
  • 2200–22998
  • 2300–239915
  • 2400–24997
  • 2500–25998
  • 2600–26996
  • 2700–27997
  • 2800–28996
  • 2900–29994
  • 3000–30993
  • 3100–31992
  • 3200–32993
  • 3300–33991
  • 3500–35992
  • 60
  • sortings46
  • binary search43
  • number theory38
  • graphs34
  • trees31
  • bitmasks30
  • strings26
  • interactive22
  • combinatorics21
  • dfs and similar21
  • games20
  • two pointers19
  • divide and conquer16
  • *special12
  • dsu10
  • probabilities6
  • string suffix structures5
  • graph matchings4
  • flows4
  • hashing3
  • geometry3
  • Other (7 tags)12
  • 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 24/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 56/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 15/day in 2026)

    2288
    -71
    1907
    2026-02-26 17:05Codeforces Round 1083 (Div. 2)427+11978
    2026-02-25 16:35Educational Codeforces Round 187 (Rated for Div. 2)335+291977
    2025-12-27 17:35Good Bye 20251858-291948
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)1076+41977
    2025-12-11 16:35Codeforces Round 1070 (Div. 2)239+551973
    2025-12-06 10:15Codeforces Round 1069 (Div. 1)515+61918
    2025-12-05 16:35Codeforces Round 1068 (Div. 2)352+461912