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XiaY

Open on Codeforces · Unique solved

Rating2419· 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
26
Unique solved
1,160
Submissions (all)
2,596
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.

  • Unrated10
  • 800–89983
  • 900–99913
  • 1000–109910
  • 1100–119916
  • 1200–129920
  • 1300–13999

Solved by topic

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

  • math453
  • greedy423
  • dp372
  • data structures316
  • constructive algorithms295
  • implementation239

Rating changes

2022

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

Jan
Feb
Mar
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
2026-04-13 16:35Codeforces Round 1093 (Div. 1)207-202419
2026-01-17 17:35Codeforces Round 1073 (Div. 1)103+862439
2026-01-07 17:35Hello 2026117+1262353
2025-12-27 17:35Good Bye 2025299+842227
2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)3516-184
1400–1499
11
  • 1500–159915
  • 1600–169993
  • 1700–1799124
  • 1800–189965
  • 1900–199932
  • 2000–209939
  • 2100–219936
  • 2200–229976
  • 2300–239992
  • 2400–2499103
  • 2500–2599115
  • 2600–269971
  • 2700–279965
  • 2800–289925
  • 2900–29998
  • 3000–309910
  • 3100–31995
  • 3200–32999
  • 3300–33992
  • 3400–34992
  • 3500–35991
  • brute force
    227
  • binary search177
  • dfs and similar166
  • graphs163
  • combinatorics156
  • trees153
  • bitmasks147
  • sortings134
  • number theory115
  • two pointers109
  • strings84
  • divide and conquer77
  • dsu63
  • games62
  • interactive52
  • hashing49
  • probabilities47
  • shortest paths39
  • geometry33
  • string suffix structures19
  • graph matchings16
  • flows15
  • Other (9 tags)61
  • 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 6/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 13/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 40/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 27/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 11/day in 2026)

    2143
    2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)305+392327
    2025-02-11 16:35Codeforces Round 1004 (Div. 1)235+532288
    2024-12-28 17:35Good Bye 2024: 2025 is NEAR613+102235
    2024-12-08 16:35Codeforces Round 992 (Div. 2)20+1292225
    2024-12-03 08:25Codeforces Round 990 (Div. 1)331+352096
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)308+1362061
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)1130+171925