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stntn

Open on Codeforces · Unique solved

Rating2296· 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
11
Unique solved
894
Submissions (all)
2,717
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.

  • Unrated8
  • 800–89987
  • 900–99924
  • 1000–109920
  • 1100–119926
  • 1200–129917
  • 1300–139928

Solved by topic

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

  • math318
  • greedy308
  • dp277
  • data structures267
  • constructive algorithms206
  • brute force154
  • implementation

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
2023-11-25 17:20CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!)60+2062296
2023-10-22 13:05Codeforces Round 905 (Div. 1)437-182090
2023-08-15 16:35Codeforces Round 893 (Div. 2)127+582108
2023-08-05 16:35Codeforces Round 890 (Div. 2) supported by Constructor Institute225+422050
2023-07-29 17:05Codeforces Round 889 (Div. 1)
1400–1499
26
  • 1500–159918
  • 1600–169924
  • 1700–179924
  • 1800–189929
  • 1900–199952
  • 2000–209937
  • 2100–219936
  • 2200–229940
  • 2300–239943
  • 2400–249965
  • 2500–259961
  • 2600–269960
  • 2700–279955
  • 2800–289937
  • 2900–299920
  • 3000–309916
  • 3100–319910
  • 3200–329915
  • 3300–33993
  • 3400–34997
  • 3500–35996
  • 149
  • dfs and similar127
  • trees125
  • binary search123
  • graphs123
  • sortings107
  • combinatorics84
  • number theory77
  • bitmasks72
  • strings61
  • two pointers61
  • dsu51
  • probabilities42
  • divide and conquer35
  • games29
  • flows28
  • interactive28
  • geometry27
  • shortest paths25
  • hashing20
  • graph matchings15
  • string suffix structures13
  • Other (9 tags)34
  • 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 30/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 50/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 45/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 18/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 10/day in 2025)

    776
    -50
    2008
    2023-07-27 16:35Educational Codeforces Round 152 (Rated for Div. 2)247+712058
    2023-07-23 17:05Codeforces Round 887 (Div. 2)63+1911987
    2023-06-18 10:05Codeforces Round 879 (Div. 2)69+2861796
    2023-05-08 14:05Codeforces Round 872 (Div. 2)69+4111510
    2023-01-10 13:45Codeforces Round 843 (Div. 2)335+5061099
    2022-09-23 14:05Codeforces Round 822 (Div. 2)1106+593593