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Top rated · Stats

guaidaokakaxi

Open on Codeforces · Unique solved

Rating2339· 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
45
Unique solved
1,026
Submissions (all)
2,909
Years with activity
2018–2026

Solved by problem rating

Unique accepted problems, bucketed by catalog rating (100‑point bands). Unrated = no rating in the problem set.

  • Unrated18
  • 800–899112
  • 900–99930
  • 1000–109926
  • 1100–119944
  • 1200–129926
  • 1300–139934

Solved by topic

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

  • greedy538
  • math422
  • constructive algorithms290
  • implementation280
  • brute force267
  • dp241
  • data structures

Rating changes

2018

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2018

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-05-06 08:35Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)57+1392339
2025-09-17 16:35Codeforces Round 1051 (Div. 2)5+2572200
2025-02-28 16:50Codeforces Round 1007 (Div. 2)65+1761943
2025-02-27 16:35Educational Codeforces Round 175 (Rated for Div. 2)1227+11767
2025-02-18 16:35Educational Codeforces Round 174 (Rated for Div. 2)
1400–1499
139
  • 1500–1599112
  • 1600–1699132
  • 1700–1799152
  • 1800–1899134
  • 1900–199938
  • 2000–20997
  • 2100–21999
  • 2200–22995
  • 2300–23992
  • 2400–24992
  • 2500–25993
  • 2700–27991
  • 209
  • binary search188
  • sortings164
  • number theory119
  • two pointers110
  • bitmasks98
  • dfs and similar96
  • strings91
  • graphs90
  • trees66
  • combinatorics64
  • games46
  • dsu35
  • interactive33
  • geometry29
  • shortest paths24
  • divide and conquer23
  • hashing20
  • *special19
  • matrices8
  • flows7
  • probabilities7
  • Other (7 tags)27
  • 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.

    2020

    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.

    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.

    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
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    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
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    Dec

    LessMore (max 6/day in 2018)

    2020

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 5/day in 2020)

    2021

    Download PNG

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

    Jan
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    LessMore (max 1/day in 2021)

    2024

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 44/day in 2024)

    2025

    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 42/day in 2025)

    2026

    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 11/day in 2026)

    1298
    +0
    1766
    2024-11-17 16:50Codeforces Round 988 (Div. 3)15+2361766
    2024-11-15 14:35Codeforces Round 987 (Div. 2)3065-241530
    2024-11-02 16:50Codeforces Round 984 (Div. 3)599+751554
    2024-11-01 16:35Codeforces Round 983 (Div. 2)4179-241479
    2024-10-28 16:35Educational Codeforces Round 171 (Rated for Div. 2)3609-121503
    2024-10-27 17:35Codeforces Global Round 274900-661515
    2024-10-24 16:50Codeforces Round 981 (Div. 3)831+471581