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Top rated · Stats

pikaka

Open on Codeforces · Unique solved

Rating2135· 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
57
Unique solved
1,015
Submissions (all)
1,834
Years with activity
2023–2026

Solved by problem rating

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

  • Unrated194
  • 800–899163
  • 900–99932
  • 1000–109934
  • 1100–119958
  • 1200–129944
  • 1300–139952

Solved by topic

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

  • greedy421
  • math346
  • implementation221
  • constructive algorithms217
  • brute force205
  • dp178
  • data structures

Rating changes

2023

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2023

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-10-24 16:35Codeforces Round 1061 (Div. 2)31+1322135
2025-10-19 16:35Codeforces Round 1060 (Div. 2)1185-742003
2025-10-12 17:05Codeforces Round 1058 (Div. 1)514-22077
2025-10-10 16:50Codeforces Round 1057 (Div. 2)404-112079
2025-10-06 16:35Educational Codeforces Round 183 (Rated for Div. 2)253
1400–1499
44
  • 1500–159948
  • 1600–169953
  • 1700–179947
  • 1800–189937
  • 1900–199967
  • 2000–209931
  • 2100–219924
  • 2200–229934
  • 2300–239923
  • 2400–249914
  • 2500–25996
  • 2600–26995
  • 2700–27991
  • 2800–28992
  • 3000–30991
  • 3100–31991
  • 159
  • binary search119
  • sortings118
  • number theory95
  • dfs and similar84
  • graphs82
  • bitmasks73
  • strings73
  • two pointers72
  • trees67
  • combinatorics61
  • games38
  • dsu31
  • shortest paths26
  • divide and conquer25
  • interactive19
  • geometry15
  • hashing15
  • graph matchings9
  • probabilities9
  • ternary search6
  • string suffix structures5
  • Other (6 tags)16
  • 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 9/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 50/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 17/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 1/day in 2026)

    +18
    2090
    2025-10-05 18:35Codeforces Round 1056 (Div. 2)194+272072
    2025-10-03 17:35Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)591+582045
    2025-09-24 14:50Codeforces Round 1053 (Div. 1)713-231987
    2025-09-21 16:50Codeforces Round 1052 (Div. 2)237+492010
    2025-09-20 17:35Codeforces Global Round 29 (Div. 1 + Div. 2)652+841961
    2025-09-17 16:35Codeforces Round 1051 (Div. 2)1942-631877
    2025-09-15 16:35Educational Codeforces Round 182 (Rated for Div. 2)1221-431940