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zlc1114

Open on Codeforces · Unique solved

Rating2457· Grandmaster

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
38
Unique solved
2,320
Submissions (all)
5,419
Years with activity
2016–2024

Solved by problem rating

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

  • Unrated283
  • 800–899220
  • 900–99985
  • 1000–109976
  • 1100–119971
  • 1200–129995
  • 1300–139985

Solved by topic

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

  • greedy703
  • math668
  • implementation570
  • dp468
  • constructive algorithms441
  • brute force437
  • data structures

Rating changes

2016

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

Jan
Feb
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May

Submission volume

Download all years PNG

2016

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2020-09-30 17:20Grakn Forces 202074+1152457
2020-09-06 16:35Codeforces Round 668 (Div. 1)197+412342
2019-09-04 11:35Codeforces Round 583 (Div. 1 + Div. 2, based on Olympiad of Metropolises)327-462301
2019-06-01 16:50Codeforces Global Round 3233-62347
2019-05-26 17:35Codeforces Round 562 (Div. 1)
1400–1499
83
  • 1500–159993
  • 1600–1699103
  • 1700–1799109
  • 1800–189997
  • 1900–199994
  • 2000–209999
  • 2100–219999
  • 2200–2299103
  • 2300–239982
  • 2400–2499114
  • 2500–259996
  • 2600–269956
  • 2700–279961
  • 2800–289941
  • 2900–299927
  • 3000–309913
  • 3100–319912
  • 3200–32999
  • 3300–33996
  • 3400–34997
  • 3500–35991
  • 416
  • binary search251
  • sortings245
  • graphs244
  • dfs and similar224
  • trees220
  • number theory190
  • strings180
  • combinatorics149
  • bitmasks149
  • two pointers134
  • dsu101
  • divide and conquer82
  • geometry59
  • hashing55
  • shortest paths52
  • interactive50
  • games42
  • probabilities39
  • *special33
  • string suffix structures28
  • fft24
  • Other (9 tags)102
  • Jun
    Jul
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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.

    2017

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

    Jan
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    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.

    2018

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

    Jan
    Feb
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    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
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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.

    2020

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

    Jan
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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.

    2021

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

    Jan
    Feb
    Mar
    Apr
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    Jun
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    Aug
    Sep
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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.

    2022

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

    Jan
    Feb
    Mar
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    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.

    2023

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

    Jan
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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.

    2024

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

    Jan
    Feb
    Mar
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    Jun
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    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.

    May
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    LessMore (max 16/day in 2016)

    2017

    Download PNG

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

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    LessMore (max 32/day in 2017)

    2018

    Download PNG

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

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    2019

    Download PNG

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

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    2020

    Download PNG

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

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    2021

    Download PNG

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

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    LessMore (max 36/day in 2021)

    2022

    Download PNG

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

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    LessMore (max 27/day in 2022)

    2023

    Download PNG

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

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    LessMore (max 44/day in 2023)

    2024

    Download PNG

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

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    LessMore (max 46/day in 2024)

    85
    +45
    2353
    2018-05-15 16:45Codeforces Round 483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!]22+1992308
    2018-05-08 17:05Codeforces Round 480 (Div. 2)48+912109
    2018-04-17 16:05Tinkoff Internship Warmup Round 2018 and Codeforces Round 475 (Div. 1)215+232018
    2018-03-10 17:35Codeforces Round 470 (rated, Div. 1, based on VK Cup 2018 Round 1)193+581995
    2018-03-09 10:40Codeforces Round 469 (Div. 1)402-481937
    2018-02-15 16:35ICM Technex 2018 and Codeforces Round 463 (Div. 1 + Div. 2, combined)1284-981985
    2018-02-14 14:05Codeforces Round 462 (Div. 1)75+1532083