xyr2005

• Username: 7★xyr2005
• Country:  China
• Student/Professional:Student
• Institution:Hangzhou No.2 High School, Zhejiang
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 5

Current Ratings Graph Old Ratings Graph

2653 (-77)RatingProvisional
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April Challenge 2021 Division 1(2021-04-12 15:00:00)

Global Rank:   26

Cheated in:   

Ratings System Update

(2021-04-12 15:00:00)

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2653 (+291)RatingProvisional
Rating i Provisional Rating, click to know more

April Challenge 2021 Division 1(2022-12-20 00:00:00)

Global Rank:   26

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)

October Challenge 2020 Division 2

Positive AND, Random Knapsack, Rooted Minimum Spanning Tree, Replace for X, D-Dimensional MST, Compress all Subsegments, Adding Squares, Village Road Network, Covid Run, Chef and Easy Queries, Inversions

November Challenge 2020 Division 2

Ada and Dishes, Iron, Magnet and Wall, Unusual Queries, Scalar Product Tree, Red-Black Boolean Expression, Selecting Edges, Magical Candy Store, Restore Sequence, Chef and the Combination Lock

January Challenge 2021 Division 2

Guess the Tiling, And-Or Game, Sequence Creation, Fair Elections, Watching CPL, Stack-Queue Sort (Challenge), Expected Number of SCCs, Chef and Ants, Curious Matrix, Cool Subsets, Blackjack

February Challenge 2021 Division 1

Dream and the Multiverse, Cell Shell, Bash Matrix, XOR Sums, Multiple Games, Prime Game, Another Tree with Number Theory, Team Name

April Challenge 2021 Division 1

Binary String MEX, Tree Permutations, Worthy Matrix, Destroy the EMP Chip, String Power, Chef and Dice, Boolean Game

Total Problems Solved: 84