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solver777

Open on Codeforces · Unique solved

Rating2156· 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
37
Unique solved
375
Submissions (all)
1,211
Years with activity
2017–2026

Solved by problem rating

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

  • Unrated13
  • 800–89941
  • 900–99913
  • 1000–109922
  • 1100–119911
  • 1200–129922
  • 1300–139924

Solved by topic

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

  • greedy144
  • math142
  • implementation102
  • constructive algorithms84
  • dp82
  • brute force60
  • data structures

Rating changes

2017

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2017

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-03-08 17:35Codeforces Round 1085 (Div. 1 + Div. 2)1145-1072156
2021-08-01 17:00Codeforces Round 736 (Div. 1)489-262263
2021-04-23 17:20Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2)418+112289
2021-03-21 13:20Технокубок 2021 - Финал68-82278
2021-03-10 14:05Codeforces Round 706 (Div. 1)
1400–1499
21
  • 1500–159922
  • 1600–169918
  • 1700–179924
  • 1800–189916
  • 1900–199927
  • 2000–209913
  • 2100–219919
  • 2200–229911
  • 2300–239910
  • 2400–249917
  • 2500–259910
  • 2600–26996
  • 2700–27993
  • 2800–28992
  • 2900–29996
  • 3100–31991
  • 3200–32991
  • 3300–33991
  • 3400–34991
  • 57
  • sortings45
  • binary search43
  • graphs42
  • number theory40
  • dfs and similar39
  • strings36
  • bitmasks27
  • trees24
  • two pointers23
  • combinatorics22
  • dsu14
  • hashing12
  • shortest paths11
  • divide and conquer11
  • games7
  • probabilities6
  • geometry6
  • interactive6
  • flows5
  • string suffix structures5
  • ternary search5
  • Other (6 tags)12
  • 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.

    2018

    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.

    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
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    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.

    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
    Jun
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    Dec

    LessMore (max 8/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 14/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 37/day in 2019)

    2020

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
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    LessMore (max 27/day in 2020)

    2021

    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 90/day in 2021)

    2022

    Download PNG

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

    Jan
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    LessMore (max 18/day in 2022)

    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 10/day in 2025)

    2026

    Download PNG

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

    Jan
    Feb
    Mar
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    May
    Jun
    Jul
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    Dec

    LessMore (max 13/day in 2026)

    518
    -39
    2286
    2021-02-28 16:35Codeforces Global Round 13129+1352325
    2020-12-06 17:35Codeforces Global Round 12416+382190
    2020-11-29 09:05Technocup 2021 - Elimination Round 25+1672152
    2020-03-01 13:10Технокубок 2020 - Финал142+21985
    2020-01-10 16:20Codeforces Round 613 (Div. 2)457-41983
    2019-12-14 13:05Codeforces Round 606 (Div. 1, based on Technocup 2020 Elimination Round 4)531-571987
    2019-11-27 15:50Educational Codeforces Round 77 (Rated for Div. 2)124+662044