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Top rated · Stats

2018LZY

Open on Codeforces · Unique solved

Rating2302· 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
65
Unique solved
1,511
Submissions (all)
3,358
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.

  • Unrated293
  • 800–899175
  • 900–99939
  • 1000–109947
  • 1100–119948
  • 1200–129951
  • 1300–139949

Solved by topic

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

  • greedy524
  • math509
  • constructive algorithms329
  • implementation311
  • dp310
  • data structures266

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
2025-05-01 16:35Codeforces Round 1022 (Div. 2)2+2462302
2025-04-28 16:35Educational Codeforces Round 178 (Rated for Div. 2)573-422056
2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)943-122098
2025-04-05 17:35Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)2289-1352110
2025-03-23 08:05Codeforces Round 1012 (Div. 1)
1400–1499
52
  • 1500–159954
  • 1600–169959
  • 1700–179958
  • 1800–189959
  • 1900–199962
  • 2000–209952
  • 2100–219950
  • 2200–229947
  • 2300–239940
  • 2400–249964
  • 2500–259936
  • 2600–269940
  • 2700–279933
  • 2800–289922
  • 2900–299922
  • 3000–309919
  • 3100–31999
  • 3200–32999
  • 3300–339912
  • 3400–34992
  • 3500–35998
  • brute force
    266
  • binary search191
  • sortings172
  • graphs129
  • dfs and similar118
  • trees114
  • number theory108
  • combinatorics103
  • two pointers99
  • bitmasks96
  • strings93
  • dsu54
  • interactive46
  • divide and conquer42
  • shortest paths39
  • probabilities39
  • games37
  • geometry37
  • flows23
  • hashing21
  • matrices12
  • ternary search11
  • Other (8 tags)42
  • 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.

    2021

    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.

    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.

    2023

    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 45/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 21/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
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    Dec

    LessMore (max 47/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
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    Dec

    LessMore (max 38/day in 2023)

    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 43/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 49/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 19/day in 2026)

    600
    -117
    2245
    2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)281+202362
    2024-10-27 17:35Codeforces Global Round 27629-532342
    2024-10-20 11:05Codeforces Round 980 (Div. 1)244+52395
    2024-04-30 17:05Codeforces Round 942 (Div. 1)148+812390
    2024-03-01 16:35Codeforces Round 931 (Div. 2)2+2452309
    2024-02-29 16:35Codeforces Round 930 (Div. 1)789-912064
    2024-02-17 17:35think-cell Round 1712-152155