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zscc

Open on Codeforces · Unique solved

Rating2346· 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
67
Unique solved
1,372
Submissions (all)
2,527
Years with activity
2013–2026

Solved by problem rating

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

  • Unrated176
  • 800–89969
  • 900–99938
  • 1000–109939
  • 1100–119963
  • 1200–129953
  • 1300–139962

Solved by topic

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

  • implementation425
  • math314
  • greedy285
  • dp249
  • data structures215
  • brute force208
  • constructive algorithms

Rating changes

2013

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

2013

Download PNG

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

Jan
Feb
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Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2017-10-16 13:05Codeforces Round 441 (Div. 1, by Moscow Team Olympiad)55+562346
2017-10-15 10:05Codeforces Round 440 (Div. 1, based on Technocup 2018 Elimination Round 2)62+262290
2017-07-11 18:45Codeforces Round 423 (Div. 1, rated, based on VK Cup Finals)141-72264
2017-05-13 11:35Tinkoff Challenge - Final Round (Codeforces Round 414, rated, Div. 1 + Div. 2)123+342271
2017-05-11 17:35
1400–1499
64
  • 1500–159969
  • 1600–169993
  • 1700–179972
  • 1800–189966
  • 1900–199973
  • 2000–209978
  • 2100–219973
  • 2200–229967
  • 2300–239961
  • 2400–249949
  • 2500–259935
  • 2600–269939
  • 2700–279914
  • 2800–28998
  • 2900–29998
  • 3000–30992
  • 3200–32991
  • 185
  • graphs141
  • dfs and similar135
  • sortings133
  • binary search123
  • strings111
  • number theory95
  • trees77
  • combinatorics69
  • dsu50
  • two pointers48
  • bitmasks44
  • geometry42
  • *special37
  • shortest paths36
  • hashing32
  • probabilities27
  • games24
  • divide and conquer21
  • matrices14
  • interactive13
  • flows13
  • Other (8 tags)52
  • Jun
    Jul
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    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.

    2014

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    2015

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    2016

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

    Jan
    Feb
    Mar
    Apr
    May
    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.

    2017

    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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    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
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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
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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.

    2026

    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.

    May
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    LessMore (max 13/day in 2013)

    2014

    Download PNG

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

    Jan
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    LessMore (max 17/day in 2014)

    2015

    Download PNG

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

    Jan
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    LessMore (max 24/day in 2015)

    2016

    Download PNG

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

    Jan
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    LessMore (max 35/day in 2016)

    2017

    Download PNG

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

    Jan
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    LessMore (max 41/day in 2017)

    2018

    Download PNG

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

    Jan
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    LessMore (max 30/day in 2018)

    2019

    Download PNG

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

    Jan
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    LessMore (max 8/day in 2019)

    2026

    Download PNG

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

    Jan
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    Jun
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    LessMore (max 1/day in 2026)

    Playrix Codescapes Cup (Codeforces Round 413, rated, Div. 1 + Div. 2)
    987
    -154
    2237
    2017-05-07 18:45Codeforces Round 412 (rated, Div. 1, based on VK Cup 2017 Round 3)50+792391
    2017-05-04 16:50Codeforces Round 411 (Div. 1)134+62312
    2017-04-16 17:35Codeforces Round 409 (rated, Div. 1, based on VK Cup 2017 Round 2)62+402306
    2017-03-29 18:05Codeforces Round 407 (Div. 1)398-1322266
    2017-03-23 17:05Codeforces Round 406 (Div. 1)62+422398
    2016-12-30 16:45Good Bye 201677+1002356
    2016-12-06 16:35Codeforces Round 383 (Div. 1)118+232256