Han Zhou

• Username: 3★atzhh
• Country:  United States
• Student/Professional:Student
• Institution:University of Connecticut
• CodeChef Pro Plan: No Active Plan. View Details

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Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 4

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1619? (+244)RatingProvisional
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April Long One 2022, Division 3 (Rated)(2022-04-11 15:00:02)

Global Rank:   5

Cheated in:   

Ratings System Update

(2022-04-11 15:00:02)

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1619 (-60)RatingProvisional
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April Long One 2022, Division 3 (Rated)(2022-12-20 00:00:00)

Global Rank:   5

Cheated in:   

Ratings System Update

(2022-12-20 00:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

How the rating system works?

Learning Paths (0)

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Contests (4)

January Lunchtime 2021 Division 2 (Unrated)

Dreams of Divisibility, Binary Subsequence, Even Differences, Even Sum, Good Grid

January Cook-Off 2021 Division 3

Prime Tuples, Distinct Pair Sums, Maximise Islands, Password

February Challenge 2021 Division 2

Maximise Function

October Challenge 2021 Division 3 (Rated)

Which Mixture, Three Boxes, Longest AND Subarray

April Long One 2022, Division 3 (Rated)

Dazzling GCD Pair, Prime Sum, Dazzling AXNODR Challenge , Min Max Equality, The Cooler Dilemma 2, Pairwise Xors

April Long Two 2022 Division 2 (Unrated)

Geometric Mean Inequality, Pseudo Sorted Array

August Long 2022 Division 2 (Unrated)

Angled Flip, XOR with smallest element, Hello Equation, Two Trains

Total Problems Solved: 37