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Top rated · Stats

zhaoyp

Open on Codeforces · Unique solved

Rating2226· 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
20
Unique solved
711
Submissions (all)
2,143
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.

  • Unrated5
  • 800–89985
  • 900–99919
  • 1000–109934
  • 1100–119926
  • 1200–129932
  • 1300–139924

Solved by topic

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

  • greedy265
  • math254
  • dp195
  • constructive algorithms179
  • data structures163
  • implementation147

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
2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)201+982226
2023-07-23 17:05Codeforces Round 887 (Div. 1)319+402128
2023-07-11 17:35Codeforces Round 884 (Div. 1 + Div. 2)224+1382088
2023-04-08 16:05Codeforces Round 864 (Div. 2)356+121950
2023-01-24 16:35Educational Codeforces Round 142 (Rated for Div. 2)
1400–1499
21
  • 1500–159913
  • 1600–169923
  • 1700–179923
  • 1800–189926
  • 1900–199925
  • 2000–209922
  • 2100–219938
  • 2200–229941
  • 2300–239937
  • 2400–249944
  • 2500–259939
  • 2600–269925
  • 2700–279923
  • 2800–289920
  • 2900–29999
  • 3000–309926
  • 3100–319914
  • 3200–32996
  • 3300–33995
  • 3400–34993
  • 3500–35993
  • brute force
    116
  • dfs and similar90
  • graphs89
  • trees86
  • sortings84
  • binary search81
  • combinatorics79
  • number theory75
  • bitmasks61
  • two pointers46
  • strings46
  • probabilities31
  • divide and conquer31
  • dsu28
  • interactive23
  • shortest paths22
  • geometry21
  • games16
  • hashing13
  • flows10
  • 2-sat8
  • graph matchings7
  • Other (6 tags)26
  • 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
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    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
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    Dec

    LessMore (max 10/day in 2020)

    2021

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 18/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    Jun
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    LessMore (max 41/day in 2022)

    2023

    Download PNG

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

    Jan
    Feb
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    Jun
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    LessMore (max 46/day in 2023)

    2024

    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 23/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 16/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 6/day in 2026)

    150
    +91
    1938
    2023-01-15 15:05Codeforces Round 844 (Div. 1 + Div. 2, based on VK Cup 2022 - Elimination Round)1585-361847
    2022-12-30 17:05Good Bye 2022: 2023 is NEAR539+1561883
    2022-11-04 16:35Codeforces Round 832 (Div. 2)648+591727
    2022-10-23 12:05Codeforces Round 830 (Div. 2)1767-511668
    2022-08-20 16:50Codeforces Round 816 (Div. 2)284+1471719
    2021-11-14 08:20Codeforces Round 755 (Div. 2, based on Technocup 2022 Elimination Round 2)707+321572
    2021-11-12 16:35Codeforces Round 754 (Div. 2)2045+31540