Xu Zhe an

• Username: 6★cyani
• Country:  China
• Student/Professional:Student
• Institution:Hangzhou Xuejun High School Hangzhou, Zhejiang, China
• 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: 6

Current Ratings Graph Old Ratings Graph

2345 (+94)RatingProvisional
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May Challenge 2019 Division 1(2019-05-13 15:00:00)

Global Rank:   15

Cheated in:   

Ratings System Update

(2019-05-13 15:00:00)

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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2345 (-79)RatingProvisional
Rating i Provisional Rating, click to know more

May Challenge 2019 Division 1(2022-12-20 00:00:00)

Global Rank:   15

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 (6)

October Challenge 2017

Counter Test For CHEFSUM, Max Mex, A Balanced Contest

December Challenge 2017

Chef and Universe, Total Diamonds, Chef And his Cake, Chef And Easy Xor Queries, Penalty Shoot-out, Red and blue points, Chef and Hamming Distance of arrays

November Lunchtime 2017

Smart Strategy, L-R queries

January Challenge 2018

Partition the numbers, String Merging, Rectangle, Maximum Score, Killjee and k-th letter , K-Concatenation, Simplify the Square Root, A humongous Query, Killing Monsters, (Challenge) Chef and Palindromes

May Challenge 2018 Division 1

S-T Mincut, Change the Signs, Edges in Spanning Trees, Not a Convex Hull (Challenge), Fake Binary Search, Dibs on Fibs

May Challenge 2019 Division 1

Ada Rooks 2, Trees and Degrees, Where to Build the Roads, Sonya and Gifts, Ada Pawns

Total Problems Solved: 44