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Nachia

Open on Codeforces · Unique solved

Rating3308· Legendary 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
79
Unique solved
970
Submissions (all)
1,675
Years with activity
2020–2026

Solved by problem rating

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

  • Unrated77
  • 800–899101
  • 900–99928
  • 1000–109925
  • 1100–119931
  • 1200–129949
  • 1300–1399

Solved by topic

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

  • greedy422
  • math391
  • constructive algorithms255
  • dp252
  • implementation211
  • brute force204
  • data structures

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
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)5+763308
2026-04-13 16:35Codeforces Round 1093 (Div. 1)8+773232
2026-02-23 17:05Codeforces Round 1082 (Div. 1)30-533155
2026-02-11 17:35Codeforces Round 1079 (Div. 1)61-1353208
2026-01-29 17:35Codeforces Round 1077 (Div. 1)
43
  • 1400–149931
  • 1500–159943
  • 1600–169941
  • 1700–179945
  • 1800–189943
  • 1900–199962
  • 2000–209955
  • 2100–219941
  • 2200–229934
  • 2300–239929
  • 2400–249927
  • 2500–259927
  • 2600–269926
  • 2700–279912
  • 2800–289922
  • 2900–299915
  • 3000–309918
  • 3100–319914
  • 3200–32994
  • 3300–33997
  • 3400–34995
  • 3500–359915
  • 189
  • sortings141
  • binary search127
  • graphs127
  • dfs and similar105
  • bitmasks101
  • trees99
  • combinatorics92
  • number theory80
  • strings76
  • two pointers71
  • dsu43
  • games40
  • interactive37
  • divide and conquer29
  • shortest paths26
  • geometry23
  • hashing22
  • *special16
  • matrices16
  • probabilities15
  • flows14
  • Other (9 tags)49
  • 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.

    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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    Aug
    Sep
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    Dec

    LessMore (max 36/day in 2020)

    2021

    Download PNG

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

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
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    LessMore (max 15/day in 2021)

    2022

    Download PNG

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

    Jan
    Feb
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    May
    Jun
    Jul
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    Dec

    LessMore (max 11/day in 2022)

    2023

    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 17/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 20/day in 2024)

    2025

    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 28/day in 2025)

    2026

    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 23/day in 2026)

    3
    +150
    3343
    2026-01-07 17:35Hello 2026123-1673193
    2025-12-27 17:35Good Bye 202513+183360
    2025-12-19 17:05Codeforces Global Round 31 (Div. 1 + Div. 2)34-903342
    2025-11-23 12:35Codeforces Round 1066 (Div. 1 + Div. 2)19-803432
    2025-11-16 16:35Codeforces Round 1064 (Div. 1)5+243512
    2025-11-06 17:35Codeforces Global Round 30 (Div. 1 + Div. 2)14-613488
    2025-10-30 19:35Pinely Round 5 (Div. 1 + Div. 2)6-153549