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Top rated · Stats

nichke

Open on Codeforces · Unique solved

Rating2127· 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
97
Unique solved
1,030
Submissions (all)
2,618
Years with activity
2021–2025

Solved by problem rating

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

  • Unrated11
  • 800–899167
  • 900–99931
  • 1000–109937
  • 1100–119947
  • 1200–129948
  • 1300–139950

Solved by topic

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

  • greedy447
  • math376
  • constructive algorithms281
  • implementation278
  • dp254
  • brute force210
  • data structures

Rating changes

2021

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2021

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2024-06-27 16:35Educational Codeforces Round 167 (Rated for Div. 2)42+1262127
2024-06-25 16:35Codeforces Round 955 (Div. 2, with prizes from NEAR!)377+202001
2024-06-16 11:05Codeforces Round 953 (Div. 2)167+751981
2024-05-25 17:35Codeforces Round 947 (Div. 1 + Div. 2)443+1211906
2024-05-17 16:35Codeforces Round 945 (Div. 2)
1400–1499
44
  • 1500–159941
  • 1600–169957
  • 1700–179964
  • 1800–189938
  • 1900–199959
  • 2000–209944
  • 2100–219951
  • 2200–229945
  • 2300–239944
  • 2400–249956
  • 2500–259952
  • 2600–269931
  • 2700–27996
  • 2800–28994
  • 2900–29993
  • 204
  • sortings144
  • binary search121
  • graphs108
  • dfs and similar99
  • number theory92
  • bitmasks78
  • combinatorics76
  • trees76
  • strings73
  • two pointers72
  • games33
  • dsu32
  • geometry29
  • shortest paths29
  • divide and conquer28
  • probabilities22
  • interactive19
  • hashing16
  • ternary search9
  • matrices9
  • flows7
  • Other (7 tags)24
  • 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.

    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 40/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
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    Dec

    LessMore (max 27/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 15/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 28/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 18/day in 2025)

    727
    +42
    1785
    2024-04-30 17:05Codeforces Round 942 (Div. 2)3234-1021743
    2024-04-29 16:35Educational Codeforces Round 165 (Rated for Div. 2)440+651845
    2024-04-27 16:35Codeforces Round 941 (Div. 2)569+241780
    2024-04-21 16:50Codeforces Round 940 (Div. 2) and CodeCraft-231079+151756
    2024-04-13 16:35Codeforces Round 939 (Div. 2)778+561741
    2024-04-12 16:35Educational Codeforces Round 164 (Rated for Div. 2)957+671685
    2024-04-06 17:35Codeforces Global Round 253579-371618