Dongfeng Yu

• Username: 6★vincentsilenus
• Country:  China
• Student/Professional:Student
• Institution:Shanghai Jiao Tong University
• 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: 8

Current Ratings Graph Old Ratings Graph

2455 (-52)RatingProvisional
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November Challenge 2015(2015-11-16 15:00:00)

Global Rank:   1834

Cheated in:   

Ratings System Update

(2015-11-16 15:00:00)

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2455 (+125)RatingProvisional
Rating i Provisional Rating, click to know more

November Challenge 2015(2022-12-20 00:00:00)

Global Rank:   1834

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 (8)

May Challenge 2015

Devu and binary String, Devu and his three Hands, Counting on a directed graph, Chef and new recipe, Chef and Prime Divisors, Set Difference

June Challenge 2015

Sereja and Matrix Division, Steady tables, Chef and His Friend, Chef and Memory Limit, Chef and Polygons, Another Fibonacci, Anticommutative implication, Chef and String

July Challenge 2015

Addition and Multiplication, Chef and Cube, Na2a and lucky stone, MasterChef, Bread, Sereja and Game 2, Maximum Difference Walk

August Challenge 2015

Chef and insomnia, Aditi and Magic Trick, Cooking Machine, Gravity Guy, Way Out, Devu And Churu

September Challenge 2015

Chef and Chetris, Cracking the Code, Lighthouses, Bank robbery, Terrible vectors, Nikitosh and xor, Chain of Doughnuts, 3D Queries, Filling the maze, Count Steps in Matrix

October Challenge 2015

Spheres, Jump mission, LCM equation, Rupsa and Equilateral Triangle, Cyclic shifts in permutation, Who dares to be a millionaire, Count Subarrays, Time measure

November Challenge 2015

Simple Sum

July Lunchtime 2015

Greedy puppy, Puppy and game, Puppy and cats

Total Problems Solved: 63