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pzc2004

Open on Codeforces · Unique solved

Rating2307· 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
18
Unique solved
408
Submissions (all)
1,069
Years with activity
2018–2024

Solved by problem rating

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

  • Unrated16
  • 800–89950
  • 900–99916
  • 1000–109922
  • 1100–119917
  • 1200–129919
  • 1300–139918

Solved by topic

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

  • implementation128
  • math128
  • greedy96
  • dp91
  • data structures87
  • brute force74
  • graphs

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
2022-03-20 13:50Codeforces Round 778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round)553-462307
2022-03-06 12:10Codeforces Round 775 (Div. 1, based on Moscow Open Olympiad in Informatics)121+882353
2022-02-23 12:10Codeforces Round 773 (Div. 1)723-1052265
2022-02-12 17:05Codeforces Global Round 19251+352370
2021-11-14 08:20Codeforces Round 755 (Div. 1, based on Technocup 2022 Elimination Round 2)
1400–1499
6
  • 1500–159922
  • 1600–169913
  • 1700–179910
  • 1800–189914
  • 1900–199916
  • 2000–209928
  • 2100–219929
  • 2200–229912
  • 2300–239920
  • 2400–249916
  • 2500–25995
  • 2600–269914
  • 2700–279913
  • 2800–289913
  • 2900–29996
  • 3000–30995
  • 3100–31992
  • 3200–32993
  • 3300–33992
  • 3400–34991
  • 68
  • dfs and similar59
  • constructive algorithms59
  • trees57
  • sortings42
  • combinatorics34
  • binary search34
  • strings31
  • bitmasks30
  • number theory29
  • dsu22
  • shortest paths20
  • two pointers17
  • divide and conquer15
  • probabilities14
  • interactive12
  • *special12
  • hashing11
  • geometry11
  • matrices8
  • graph matchings6
  • games5
  • Other (8 tags)13
  • 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.

    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.

    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.

    May
    Jun
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    Dec

    LessMore (max 17/day in 2018)

    2019

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 26/day in 2019)

    2020

    Download PNG

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

    Jan
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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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    Jun
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    LessMore (max 23/day in 2021)

    2022

    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 28/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
    Nov
    Dec

    LessMore (max 17/day in 2023)

    2024

    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 10/day in 2024)

    52
    +167
    2335
    2021-10-25 08:35Codeforces Round 751 (Div. 1)220+502168
    2021-08-01 17:00Codeforces Round 736 (Div. 1)790-632118
    2021-07-22 17:05Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2)637-152181
    2021-07-17 17:35Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine))302+612196
    2021-07-07 16:50Codeforces Round 730 (Div. 2)52+1072135
    2021-06-13 18:35Codeforces LATOKEN Round 1 (Div. 1 + Div. 2)379+922028
    2021-02-15 16:35Educational Codeforces Round 104 (Rated for Div. 2)65+1871936