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roycf123

Open on Codeforces · Unique solved

Rating2129· 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
71
Unique solved
681
Submissions (all)
1,595
Years with activity
2022–2026

Solved by problem rating

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

  • Unrated56
  • 800–899155
  • 900–99930
  • 1000–109929
  • 1100–119934
  • 1200–1299104
  • 1300–139927

Solved by topic

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

  • greedy289
  • math248
  • implementation220
  • constructive algorithms142
  • brute force127
  • sortings113
  • dp

Rating changes

2022

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

Jan
Feb
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Apr
May

Submission volume

Download all years PNG

2022

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2026-05-06 08:35Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026)302-222129
2026-03-21 16:35Codeforces Round 1087 (Div. 2)65+832151
2026-02-26 17:05Codeforces Round 1083 (Div. 2)429-292068
2026-01-07 17:35Hello 2026120+2212097
2025-12-29 16:35Educational Codeforces Round 186 (Rated for Div. 2)
1400–1499
101
  • 1500–159940
  • 1600–169946
  • 1700–179924
  • 1800–189913
  • 1900–19998
  • 2000–20993
  • 2100–21995
  • 2200–22993
  • 2300–23991
  • 2500–25992
  • 88
  • binary search73
  • data structures72
  • strings64
  • number theory63
  • two pointers57
  • combinatorics35
  • bitmasks31
  • dfs and similar29
  • graphs20
  • geometry19
  • *special17
  • games17
  • trees14
  • hashing12
  • dsu9
  • shortest paths8
  • string suffix structures5
  • interactive4
  • probabilities4
  • ternary search4
  • graph matchings3
  • Other (6 tags)10
  • 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 19/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 36/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 13/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 13/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 10/day in 2026)

    50
    +227
    1876
    2025-12-27 17:35Good Bye 20252701+241649
    2024-01-27 16:45Codeforces Round 921 (Div. 2)1153+361625
    2024-01-15 16:50Codeforces Round 920 (Div. 3)1761-71589
    2024-01-13 16:35Codeforces Round 919 (Div. 2)2233+81596
    2024-01-06 17:05Hello 20244474-171588
    2023-10-30 16:35Codeforces Round 907 (Div. 2)956+821605
    2023-10-28 17:05Codeforces Round 906 (Div. 2)3859-671523