Long Bui

• Username: 2★bqlong2k
• Country:  Vietnam
• Student/Professional:Student
• Institution:High School for Gifted Students, Hanoi National University of Education Hanoi, Vietnam Hanoi Vietnam
• CodeChef Pro Plan: No Active Plan. View Details

Activity Heat Map

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

Rating Graph

No. of Contests Participated: 7

Current Ratings Graph Old Ratings Graph

1426 (-27)RatingProvisional
Rating i Provisional Rating, click to know more

September Challenge 2018 Division 2(2018-09-17 15:00:02)

Global Rank:   6772

Cheated in:   

Ratings System Update

(2018-09-17 15:00:02)

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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1426 (-24)RatingProvisional
Rating i Provisional Rating, click to know more

September Challenge 2018 Division 2(2022-12-20 00:00:00)

Global Rank:   6772

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 (7)

April Challenge 2017

Stable market, Bear and Clique Distances

June Challenge 2017

Triplets

November Lunchtime 2017

Smart Strategy

December Lunchtime 2017

Days in Month, Strange Function, Too Much Sweetness

January Challenge 2018

Partition the numbers

September Challenge 2018 Division 2

AND Square Subsegments

Total Problems Solved: 40