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Top rated · Stats

mike_chu

Open on Codeforces · Unique solved

Rating2174· 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
79
Unique solved
420
Submissions (all)
873
Years with activity
2020–2026

Solved by problem rating

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

  • Unrated9
  • 800–89985
  • 900–99919
  • 1000–109919
  • 1100–119920
  • 1200–129928
  • 1300–139921

Solved by topic

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

  • greedy219
  • math192
  • constructive algorithms127
  • brute force104
  • implementation87
  • dp84
  • sortings

Rating changes

2020

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

Jan
Feb
Mar
Apr
May

Submission volume

Download all years PNG

2020

Download PNG

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

Jan
Feb
Mar
Apr

Recent rated rounds

When (UTC)ContestRankΔNew
2025-12-06 10:15Codeforces Round 1069 (Div. 1)537-742174
2025-04-19 16:35Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)398+372248
2025-01-26 17:05Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)239+1262211
2025-01-22 14:05Codeforces Round 1000 (Div. 2)98+972085
2025-01-20 17:35IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)
1400–1499
18
  • 1500–159924
  • 1600–169924
  • 1700–179926
  • 1800–189918
  • 1900–199921
  • 2000–209919
  • 2100–219916
  • 2200–229918
  • 2300–23997
  • 2400–249910
  • 2500–25996
  • 2600–26993
  • 2700–27992
  • 2800–28993
  • 2900–29992
  • 3100–31991
  • 3200–32991
  • 71
  • data structures60
  • binary search57
  • number theory54
  • graphs36
  • strings34
  • bitmasks32
  • combinatorics29
  • dfs and similar29
  • two pointers25
  • trees20
  • games19
  • shortest paths13
  • interactive12
  • geometry10
  • divide and conquer7
  • dsu6
  • ternary search5
  • probabilities4
  • graph matchings2
  • flows2
  • hashing2
  • Other (6 tags)6
  • 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.

    2021

    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.

    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.

    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 12/day in 2020)

    2021

    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 2021)

    2022

    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 2022)

    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 22/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 16/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 15/day in 2026)

    1137
    -14
    1988
    2025-01-12 16:35Codeforces Round 996 (Div. 2)406+322002
    2025-01-04 17:05Hello 20251296+71970
    2024-11-30 17:35Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)1562-441963
    2024-11-23 17:35CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)811+352007
    2024-11-15 14:35Codeforces Round 987 (Div. 2)584-81972
    2024-11-09 17:35Refact.ai Match 1 (Codeforces Round 985)954+61980
    2024-10-20 11:05Codeforces Round 980 (Div. 1)939-801974