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ZLW

Open on Codeforces · Unique solved

Rating2347· 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
15
Unique solved
516
Submissions (all)
1,136
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.

  • Unrated17
  • 800–899157
  • 900–99980
  • 1000–109935
  • 1100–119925
  • 1200–129937
  • 1300–139926

Solved by topic

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

  • math208
  • implementation195
  • greedy189
  • brute force108
  • constructive algorithms93
  • dp81
  • sortings

Rating changes

2021

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2022-02-23 12:10Codeforces Round 773 (Div. 1)61+1892347
2021-11-26 13:15Codeforces Round 757 (Div. 2)29+1312158
2021-11-12 16:35Codeforces Round 754 (Div. 2)56+1402027
2021-10-29 16:35Educational Codeforces Round 116 (Rated for Div. 2)74+1911887
2021-10-25 08:35Codeforces Round 751 (Div. 2)
1400–1499
47
  • 1500–159927
  • 1600–169917
  • 1700–179916
  • 1800–189913
  • 1900–19993
  • 2000–20995
  • 2100–21997
  • 2200–22992
  • 2300–23991
  • 2700–27991
  • 60
  • strings50
  • number theory50
  • data structures39
  • binary search31
  • bitmasks25
  • combinatorics23
  • two pointers18
  • graphs15
  • dfs and similar12
  • games10
  • shortest paths10
  • trees7
  • hashing7
  • *special6
  • geometry6
  • dsu6
  • matrices3
  • interactive3
  • flows2
  • graph matchings2
  • ternary search2
  • Other (2 tags)2
  • 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.

    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.

    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
    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 41/day in 2021)

    2022

    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 2022)

    2024

    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 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 6/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 26/day in 2026)

    260
    +85
    1696
    2021-10-17 13:20Codeforces Round 749 (Div. 1 + Div. 2, based on Technocup 2022 Elimination Round 1)1152+941611
    2021-10-13 16:50Codeforces Round 748 (Div. 3)415+1041517
    2021-10-03 16:35Codeforces Round 746 (Div. 2)4235-431413
    2021-09-30 12:15Codeforces Round 745 (Div. 2)3555-801456
    2021-09-28 16:50Codeforces Round 744 (Div. 3)772+981536
    2021-09-20 16:35Educational Codeforces Round 114 (Rated for Div. 2)644+2801438
    2021-09-08 16:35Educational Codeforces Round 113 (Rated for Div. 2)1777+2831158