Yi Xu

• Username: 4★xyiyy
• Country:  China
• Student/Professional:Student
• Institution:Shanghai University, 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: 5

Current Ratings Graph Old Ratings Graph

1881 (+97)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2017(2017-01-18 15:00:00)

Global Rank:   186

Cheated in:   

Ratings System Update

(2017-01-18 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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1881 (-104)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2017(2022-12-20 00:00:00)

Global Rank:   186

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 (5)

April Challenge 2015

Broken Telephone, Chef and Piano Scales, Chef and Interview

October Challenge 2015

Time measure, Count Subarrays, Who dares to be a millionaire, Spheres, Rupsa and Equilateral Triangle

December Challenge 2015

Oracle Devu and Longest Common Subsequence, Chef and Filters, Plane Division, Chef and the stones

December Challenge 2016

Train Partner, Kirito in labyrinth, Our Base is Under Attack

January Challenge 2017

Capital Movement, Cats and Dogs, Chef and Circle, Digits Cannot Separate, Reservior, Tourists in Mancunia

Total Problems Solved: 24