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AlphaCodeKiller

Open on Codeforces · Unique solved

Rating2241· 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
13
Unique solved
55
Submissions (all)
95
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.

  • Unrated6
  • 800–89914
  • 900–9992
  • 1000–10993
  • 1300–13992
  • 1400–14993
  • 1500–15992

Solved by topic

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

  • greedy30
  • constructive algorithms22
  • implementation15
  • data structures13
  • math13
  • dp12
  • sortings

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
2026-04-25 17:05Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)145+1162241
2026-02-23 17:05Codeforces Round 1082 (Div. 1)143+1712125
2025-07-19 16:50Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)3170-1061954
2022-10-29 11:55Codeforces Round 831 (Div. 1 + Div. 2)2128-1642060
2022-08-27 16:35Educational Codeforces Round 134 (Rated for Div. 2)
1600–1699
2
  • 1700–17996
  • 1800–18991
  • 1900–19993
  • 2000–20994
  • 2200–22992
  • 2300–23993
  • 2400–24991
  • 2500–25991
  • 10
  • brute force9
  • binary search8
  • two pointers5
  • graphs4
  • bitmasks4
  • combinatorics4
  • dfs and similar4
  • trees4
  • interactive3
  • geometry3
  • games3
  • strings3
  • divide and conquer2
  • number theory2
  • hashing2
  • dsu1
  • string suffix structures1
  • ternary search1
  • matrices1
  • shortest paths1
  • 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 13/day in 2022)

    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 6/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)

    16
    +134
    2224
    2022-08-04 16:35Educational Codeforces Round 133 (Rated for Div. 2)40+1582090
    2022-07-31 16:35CodeTON Round 2 (Div. 1 + Div. 2, Rated, Prizes!)5604-2071932
    2022-07-16 16:35Codeforces Round 808 (Div. 1)568+52139
    2022-07-04 16:35Codeforces Round 804 (Div. 2)199+932134
    2022-06-28 16:50Codeforces Round 803 (Div. 2)39+2412041
    2022-06-18 16:35Codeforces Round 801 (Div. 2) and EPIC Institute of Technology Round46+3641800
    2022-06-12 16:35Educational Codeforces Round 130 (Rated for Div. 2)12+6061436