Vinh Nguyễn Thành

• Username: 4★cheater2k
• Country:  Vietnam
• Student/Professional:Student
• Institution:High School for Gifted Students, Hanoi University of Science Vietnam
• 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: 9

Current Ratings Graph Old Ratings Graph

1979 (+70)RatingProvisional
Rating i Provisional Rating, click to know more

December Challenge 2017(2017-12-11 15:00:00)

Global Rank:   182

Cheated in:   

Ratings System Update

(2017-12-11 15:00:00)

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?

1979 (-26)RatingProvisional
Rating i Provisional Rating, click to know more

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

Global Rank:   182

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 (9)

September Lunchtime 2015

Sum of palindromic numbers

January Long Challenge 2016

Sereja and Salesman, Devu and Perfume, Chef and Time Machine, Churu and Balls, Rupsa and the Game

February Challenge 2016

Chef and Strange Operations, Devu and a light discussion, Rectangles of Love, Chef-Detective, Matrix Maximum Sum

April Challenge 2016

Help Watson Escape, Fibonacci Queries, Chef and Ballons, Devu and good strings, Chef And Magical Path, Chef And Coloring

May Challenge 2016

Laddu, Chef and Big Soccer, Forest Gathering, Sereja and GCD 2, Chef and Balls

August Challenge 2016

Chef and Chocolate, Chef and Round Run

September Challenge 2016

Chef and calculation, JosephLand, Faded Palindromes, Chef and digits of a number, Dividing Machine, Chef and Friends

December Challenge 2016

Train Partner, Kirito in labyrinth

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

Total Problems Solved: 49