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Cocoly1990

Open on Codeforces · Unique solved

Rating2408· 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
25
Unique solved
317
Submissions (all)
852
Years with activity
2021–2026

Solved by problem rating

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

  • Unrated42
  • 800–89936
  • 900–9996
  • 1000–10999
  • 1100–119915
  • 1200–129911
  • 1300–139912

Solved by topic

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

  • greedy129
  • math118
  • dp75
  • constructive algorithms70
  • data structures56
  • implementation54
  • brute force

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
2023-09-30 17:35Codeforces Round 901 (Div. 1)219+142408
2023-08-30 17:35Pinely Round 2 (Div. 1 + Div. 2)143+772394
2023-08-26 17:35Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)316+172317
2023-02-05 15:05Codeforces Round 850 (Div. 1, based on VK Cup 2022 - Final Round)227+532300
2023-01-29 17:35TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!)
1400–1499
11
  • 1500–15997
  • 1600–169912
  • 1700–179912
  • 1800–18999
  • 1900–199911
  • 2000–209910
  • 2100–219913
  • 2200–229912
  • 2300–239912
  • 2400–249918
  • 2500–259912
  • 2600–269911
  • 2700–27998
  • 2800–289910
  • 2900–29992
  • 3000–30995
  • 3100–31992
  • 3200–32995
  • 3300–33992
  • 3400–34991
  • 3500–35991
  • 42
  • graphs42
  • binary search39
  • dfs and similar31
  • sortings30
  • number theory29
  • trees28
  • combinatorics27
  • bitmasks24
  • interactive24
  • strings20
  • shortest paths16
  • two pointers15
  • divide and conquer14
  • dsu11
  • geometry10
  • probabilities8
  • games8
  • hashing4
  • ternary search3
  • graph matchings2
  • string suffix structures2
  • Other (3 tags)3
  • 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
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    LessMore (max 20/day in 2021)

    2022

    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 30/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 30/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 8/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 31/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 2/day in 2026)

    366
    +34
    2247
    2022-11-06 17:05CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!)321+452213
    2022-10-23 09:50Codeforces Round 829 (Div. 1)574-392168
    2022-09-30 17:05Codeforces Global Round 22344+512207
    2022-08-18 15:35Codeforces Round 815 (Div. 2)62+872156
    2022-08-16 16:35Codeforces Round 814 (Div. 1)376+512069
    2022-08-13 16:50Codeforces Round 813 (Div. 2)76+1382018
    2022-08-06 16:35Codeforces Round 812 (Div. 2)2233-931880