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nqiiii

Open on Codeforces · Unique solved

Rating2375· 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
12
Unique solved
361
Submissions (all)
806
Years with activity
2018–2023

Solved by problem rating

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

  • Unrated99
  • 800–8999
  • 900–9993
  • 1000–10992
  • 1100–11993
  • 1200–12997
  • 1300–13994

Solved by topic

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

  • dp70
  • math59
  • data structures58
  • greedy56
  • constructive algorithms45
  • implementation45
  • 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
2021-04-03 16:50Codeforces Round 712 (Div. 1)93+1202375
2021-03-21 15:35Codeforces Round 709 (Div. 1, based on Technocup 2021 Final Round)254+402255
2021-02-28 16:35Codeforces Global Round 13598+112215
2018-10-21 10:10Codeforces Round 517 (Div. 1, based on Technocup 2019 Elimination Round 2)329-892204
2018-10-14 12:05Codeforces Round 516 (Div. 1, by Moscow Team Olympiad)
1400–1499
5
  • 1500–15997
  • 1600–169918
  • 1700–179911
  • 1800–189915
  • 1900–199917
  • 2000–209911
  • 2100–21997
  • 2200–229914
  • 2300–239912
  • 2400–249918
  • 2500–259913
  • 2600–269916
  • 2700–279911
  • 2800–28999
  • 2900–299912
  • 3000–309912
  • 3100–31999
  • 3200–329913
  • 3300–33994
  • 38
  • dfs and similar38
  • brute force37
  • trees36
  • binary search30
  • number theory24
  • *special23
  • strings20
  • bitmasks20
  • combinatorics19
  • dsu18
  • sortings17
  • geometry13
  • probabilities12
  • two pointers12
  • shortest paths11
  • divide and conquer11
  • interactive7
  • hashing7
  • games5
  • string suffix structures5
  • flows4
  • Other (8 tags)19
  • Jun
    Jul
    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.

    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.

    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.

    May
    Jun
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    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 47/day in 2018)

    2019

    Download PNG

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

    Jan
    Feb
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    Apr
    May
    Jun
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    Aug
    Sep
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    Dec

    LessMore (max 19/day in 2019)

    2020

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
    Aug
    Sep
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    Dec

    LessMore (max 11/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
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    Sep
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    LessMore (max 10/day in 2021)

    2023

    Download PNG

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

    Jan
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    May
    Jun
    Jul
    Aug
    Sep
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    LessMore (max 51/day in 2023)

    82
    +48
    2293
    2018-10-04 09:35Codeforces Round 513 by Barcelona Bootcamp (rated, Div. 1 + Div. 2)88+832245
    2018-04-07 18:35Divide by Zero 2018 and Codeforces Round 474 (Div. 1 + Div. 2, combined)83+1072162
    2018-02-17 12:05Codeforces Round 464 (Div. 2)7+1802055
    2018-02-16 17:05Educational Codeforces Round 38 (Rated for Div. 2)164+411875
    2018-02-15 16:35ICM Technex 2018 and Codeforces Round 463 (Div. 1 + Div. 2, combined)220+1551834
    2018-02-14 14:05Codeforces Round 462 (Div. 2)780+111679
    2018-01-13 15:05Educational Codeforces Round 36 (Rated for Div. 2)105+16681668