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Top rated · Stats

heguangfu

Open on Codeforces · Unique solved

Rating2122· 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
19
Unique solved
690
Submissions (all)
1,798
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.

  • Unrated69
  • 800–89951
  • 900–99924
  • 1000–109925
  • 1100–119915
  • 1200–129935
  • 1300–139923

Solved by topic

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

  • math237
  • greedy233
  • implementation180
  • constructive algorithms153
  • dp152
  • brute force126
  • 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
2021-03-06 16:20Codeforces Round 705 (Div. 2)19+1752122
2021-03-02 16:45Educational Codeforces Round 105 (Rated for Div. 2)358+501947
2021-02-28 16:35Codeforces Global Round 131960-331897
2021-01-29 16:35Educational Codeforces Round 103 (Rated for Div. 2)154+1341930
2019-08-11 14:35Codeforces Round 578 (Div. 2)
1400–1499
24
  • 1500–159935
  • 1600–169935
  • 1700–179937
  • 1800–189935
  • 1900–199941
  • 2000–209939
  • 2100–219941
  • 2200–229937
  • 2300–239930
  • 2400–249928
  • 2500–259930
  • 2600–269915
  • 2700–279913
  • 2800–28992
  • 2900–29994
  • 3200–32992
  • 118
  • binary search97
  • sortings84
  • number theory78
  • graphs75
  • dfs and similar63
  • two pointers56
  • bitmasks47
  • combinatorics46
  • trees44
  • strings38
  • dsu26
  • shortest paths24
  • interactive23
  • geometry17
  • games15
  • hashing12
  • divide and conquer11
  • graph matchings8
  • probabilities8
  • fft6
  • flows6
  • Other (8 tags)29
  • Jun
    Jul
    Aug
    Sep
    Oct
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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.

    2019

    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.

    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.

    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.

    2026

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

    Jan
    Feb
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    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 26/day in 2018)

    2019

    Download PNG

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

    Jan
    Feb
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    May
    Jun
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    LessMore (max 31/day in 2019)

    2020

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
    Jul
    Aug
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    LessMore (max 26/day in 2020)

    2021

    Download PNG

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

    Jan
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    May
    Jun
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    LessMore (max 49/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 25/day in 2022)

    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 2/day in 2026)

    637
    +39
    1796
    2019-04-16 16:35Codeforces Round 552 (Div. 3)11+2341757
    2019-04-13 16:05Codeforces Round 551 (Div. 2)3051-651523
    2019-04-06 13:35Codeforces Global Round 22676-501588
    2019-02-23 12:20Codeforces Round 541 (Div. 2)904+391638
    2019-01-22 16:35Codeforces Round 534 (Div. 2)1112+221599
    2019-01-20 14:05Codeforces Round 533 (Div. 2)1896-161577
    2019-01-11 16:35Educational Codeforces Round 58 (Rated for Div. 2)1184+311593