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Nickqw

Open on Codeforces · Unique solved

Rating2169· 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
28
Unique solved
538
Submissions (all)
903
Years with activity
2020–2024

Solved by problem rating

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

  • Unrated1
  • 800–899105
  • 900–99938
  • 1000–109935
  • 1100–119922
  • 1200–129930
  • 1300–139933

Solved by topic

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

  • math221
  • greedy221
  • implementation128
  • constructive algorithms128
  • dp123
  • brute force111
  • sortings

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
2021-01-29 16:35Educational Codeforces Round 103 (Rated for Div. 2)19+1802169
2021-01-19 16:35Codeforces Round 696 (Div. 2)458+121989
2021-01-08 16:35Codeforces Round 695 (Div. 2)1035-361977
2021-01-05 16:35Codeforces Round 694 (Div. 1)788-522013
2020-12-28 16:35Educational Codeforces Round 101 (Rated for Div. 2)
1400–1499
43
  • 1500–159939
  • 1600–169932
  • 1700–179924
  • 1800–189927
  • 1900–199919
  • 2000–209920
  • 2100–219918
  • 2200–229914
  • 2300–23998
  • 2400–249913
  • 2500–25997
  • 2600–26993
  • 2700–27993
  • 2800–28993
  • 2900–29991
  • 84
  • data structures82
  • number theory61
  • binary search59
  • dfs and similar40
  • bitmasks39
  • graphs39
  • two pointers38
  • trees34
  • strings33
  • combinatorics30
  • dsu20
  • divide and conquer17
  • shortest paths12
  • games10
  • geometry9
  • hashing6
  • interactive5
  • probabilities5
  • flows4
  • string suffix structures3
  • ternary search3
  • Other (7 tags)15
  • 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
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 30/day in 2020)

    2021

    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 12/day in 2021)

    2022

    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 6/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 10/day in 2023)

    2024

    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 3/day in 2024)

    182
    +54
    2065
    2020-12-17 16:35Educational Codeforces Round 100 (Rated for Div. 2)148+942011
    2020-12-11 16:35Codeforces Round 689 (Div. 2, based on Zed Code Competition)211+841917
    2020-12-04 15:20Codeforces Round 688 (Div. 2)1956-761833
    2020-11-01 13:05Codeforces Round 680 (Div. 1, based on Moscow Team Olympiad)716-211909
    2020-10-11 11:05Educational Codeforces Round 96 (Rated for Div. 2)35+2311930
    2020-09-28 10:05Codeforces Round 674 (Div. 3)30+2021699
    2020-09-19 16:35Codeforces Round 671 (Div. 2)2017+521497