Ziyi Zhang

• Username: 6★robezh765
• Country:  China
• Student/Professional:Student
• Institution:University of Wisconsin, Madison
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 11

Current Ratings Graph Old Ratings Graph

2415 (+62)RatingProvisional
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April Lunchtime 2022 Division 1(Rated)(2022-04-16 22:30:00)

Global Rank:   23

Cheated in:   

Ratings System Update

(2022-04-16 22:30:00)

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

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2415 (-104)RatingProvisional
Rating i Provisional Rating, click to know more

April Lunchtime 2022 Division 1(Rated)(2022-12-20 00:00:00)

Global Rank:   23

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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Practice Paths (0)

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Contests (11)

September Challenge 2018 Division 2

War of XORs, Chef and Adventures, Magician versus Chef

August Lunchtime 2018 Division 2

Chef and Problem Setting, Chef and Eid, Mix Mix Game, X and Two Groups

September Lunchtime 2018 Division 2

Judging Delay, Opposite Cites, Chef Restaurant , Match the Streams

May Lunchtime 2019 Division 1 (Unrated)

Grid Tour, Reverse Maximisation

December Cook-Off 2019 Division 1

Xor It, Crash It

May Challenge 2020 Division 1

Buying a New String, Triple Sort, Sorting Vases, Not a Real World Problem, Chef and Bitwise Product

May Cook-Off 2020 Division 1

Roads in Chefland, Chefina on a Trip, Chef, Chefina and Their Friendship, Chefland Squads and the Army Chief

June Challenge 2020 Division 1

The Tom and Jerry Game!, Operations on a Tuple, The Delicious Cake, Convenient Airports, Guessing Game, Perfect Partitions, Danya and Different Values

July Challenge 2020 Division 1

Missing a Point, Expected Repetitions, Weird Product, Doctor Chef, Chef and Dragon Dens, Chefina and Swaps, LCM Constraints

July Cook-Off 2020 Division 1

What Is This, a Crossover Episode, The In-XOR-able Task, Even-tual Reduction, OR-thodox Distinction, Path-etic Products

April Lunchtime 2022 Division 1(Rated)

Modular Circular Permutations, Do Not Touch the MEX!!!, Secret Machine Mania, AND Palindromes

Total Problems Solved: 57